diff --git a/1.54inch_e-paper_b_code/bcm2835/obj/GUI_BMPfile.c b/1.54inch_e-paper_b_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/1.54inch_e-paper_b_code/bcm2835/obj/GUI_BMPfile.c
+++ b/1.54inch_e-paper_b_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/1.54inch_e-paper_b_code/python2/readme.txt b/1.54inch_e-paper_b_code/python2/readme.txt
index bd0a460..bc15227 100644
--- a/1.54inch_e-paper_b_code/python2/readme.txt
+++ b/1.54inch_e-paper_b_code/python2/readme.txt
@@ -72,6 +72,7 @@
   sudo apt-get install python-pip 
   sudo pip install RPi.GPIO
   sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
   
   2, change the current directory to where the demo files located.
   3, run the demo with: 
diff --git a/1.54inch_e-paper_b_code/python3/readme.txt b/1.54inch_e-paper_b_code/python3/readme.txt
index bd0a460..bc15227 100644
--- a/1.54inch_e-paper_b_code/python3/readme.txt
+++ b/1.54inch_e-paper_b_code/python3/readme.txt
@@ -72,6 +72,7 @@
   sudo apt-get install python-pip 
   sudo pip install RPi.GPIO
   sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
   
   2, change the current directory to where the demo files located.
   3, run the demo with: 
diff --git a/1.54inch_e-paper_b_code/wiringpi/obj/GUI_BMPfile.c b/1.54inch_e-paper_b_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/1.54inch_e-paper_b_code/wiringpi/obj/GUI_BMPfile.c
+++ b/1.54inch_e-paper_b_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/1.54inch_e-paper_c_code/bcm2835/obj/GUI_BMPfile.c b/1.54inch_e-paper_c_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/1.54inch_e-paper_c_code/bcm2835/obj/GUI_BMPfile.c
+++ b/1.54inch_e-paper_c_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/1.54inch_e-paper_c_code/python2/readme.txt b/1.54inch_e-paper_c_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/1.54inch_e-paper_c_code/python2/readme.txt
+++ b/1.54inch_e-paper_c_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/1.54inch_e-paper_c_code/python3/readme.txt b/1.54inch_e-paper_c_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/1.54inch_e-paper_c_code/python3/readme.txt
+++ b/1.54inch_e-paper_c_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/1.54inch_e-paper_c_code/wiringpi/obj/GUI_BMPfile.c b/1.54inch_e-paper_c_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/1.54inch_e-paper_c_code/wiringpi/obj/GUI_BMPfile.c
+++ b/1.54inch_e-paper_c_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/1.54inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c b/1.54inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/1.54inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
+++ b/1.54inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/1.54inch_e-paper_code/python2/readme.txt b/1.54inch_e-paper_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/1.54inch_e-paper_code/python2/readme.txt
+++ b/1.54inch_e-paper_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/1.54inch_e-paper_code/python3/readme.txt b/1.54inch_e-paper_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/1.54inch_e-paper_code/python3/readme.txt
+++ b/1.54inch_e-paper_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/1.54inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c b/1.54inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/1.54inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
+++ b/1.54inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/2.13inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c b/2.13inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/2.13inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
+++ b/2.13inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/2.13inch_e-paper_b&c_code/python2/readme.txt b/2.13inch_e-paper_b&c_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.13inch_e-paper_b&c_code/python2/readme.txt
+++ b/2.13inch_e-paper_b&c_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.13inch_e-paper_b&c_code/python3/readme.txt b/2.13inch_e-paper_b&c_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.13inch_e-paper_b&c_code/python3/readme.txt
+++ b/2.13inch_e-paper_b&c_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.13inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c b/2.13inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/2.13inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
+++ b/2.13inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/2.13inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c b/2.13inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
index 022a6b0..b0aea56 100644
--- a/2.13inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
+++ b/2.13inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -52,6 +53,7 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPFILEHEADER bmpFileHeader;  //Define a bmp file header structure
     BMPINFOHEADER bmpInfoHeader;  //Define a bmp info header structure
     
+    
     // Binary file open
     if((fp = fopen(path, "rb")) == NULL) {
         Debug("Cann't open the file!\n");
@@ -65,8 +67,7 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     printf("pixel = %d * %d\r\n", bmpInfoHeader.biWidth, bmpInfoHeader.biHeight);
     
     UWORD Image_Width_Byte = (bmpInfoHeader.biWidth % 8 == 0)? (bmpInfoHeader.biWidth / 8): (bmpInfoHeader.biWidth / 8 + 1);
-    UWORD Bmp_Width_Byte = (Image_Width_Byte % 4 == 0) ? Image_Width_Byte: ((Image_Width_Byte / 4 + 1) * 4);  
-  
+    UWORD Bmp_Width_Byte = (Image_Width_Byte % 4 == 0) ? Image_Width_Byte: ((Image_Width_Byte / 4 + 1) * 4);    
     UBYTE Image[Image_Width_Byte * bmpInfoHeader.biHeight];
     memset(Image, 0xFF, Image_Width_Byte * bmpInfoHeader.biHeight);
     
@@ -82,8 +83,10 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     UWORD Bcolor, Wcolor;
     UWORD bmprgbquadsize = pow(2, bmpInfoHeader.biBitCount);// 2^1 = 2
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
+    
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
@@ -105,6 +108,7 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
             }
             if(x < Image_Width_Byte) { //bmp
                 Image[x + (bmpInfoHeader.biHeight - y - 1) * Image_Width_Byte] =  Rdata;
+                // printf("rdata = %d\r\n", Rdata);
             }
         }
     }    
diff --git a/2.13inch_e-paper_code/python2/readme.txt b/2.13inch_e-paper_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.13inch_e-paper_code/python2/readme.txt
+++ b/2.13inch_e-paper_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.13inch_e-paper_code/python3/readme.txt b/2.13inch_e-paper_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.13inch_e-paper_code/python3/readme.txt
+++ b/2.13inch_e-paper_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.13inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c b/2.13inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
index 022a6b0..b0aea56 100644
--- a/2.13inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
+++ b/2.13inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -52,6 +53,7 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPFILEHEADER bmpFileHeader;  //Define a bmp file header structure
     BMPINFOHEADER bmpInfoHeader;  //Define a bmp info header structure
     
+    
     // Binary file open
     if((fp = fopen(path, "rb")) == NULL) {
         Debug("Cann't open the file!\n");
@@ -65,8 +67,7 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     printf("pixel = %d * %d\r\n", bmpInfoHeader.biWidth, bmpInfoHeader.biHeight);
     
     UWORD Image_Width_Byte = (bmpInfoHeader.biWidth % 8 == 0)? (bmpInfoHeader.biWidth / 8): (bmpInfoHeader.biWidth / 8 + 1);
-    UWORD Bmp_Width_Byte = (Image_Width_Byte % 4 == 0) ? Image_Width_Byte: ((Image_Width_Byte / 4 + 1) * 4);  
-  
+    UWORD Bmp_Width_Byte = (Image_Width_Byte % 4 == 0) ? Image_Width_Byte: ((Image_Width_Byte / 4 + 1) * 4);    
     UBYTE Image[Image_Width_Byte * bmpInfoHeader.biHeight];
     memset(Image, 0xFF, Image_Width_Byte * bmpInfoHeader.biHeight);
     
@@ -82,8 +83,10 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     UWORD Bcolor, Wcolor;
     UWORD bmprgbquadsize = pow(2, bmpInfoHeader.biBitCount);// 2^1 = 2
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
+    
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
@@ -105,6 +108,7 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
             }
             if(x < Image_Width_Byte) { //bmp
                 Image[x + (bmpInfoHeader.biHeight - y - 1) * Image_Width_Byte] =  Rdata;
+                // printf("rdata = %d\r\n", Rdata);
             }
         }
     }    
diff --git a/2.13inch_e-paper_d_code/wiringpi/obj/GUI_BMPfile.c b/2.13inch_e-paper_d_code/wiringpi/obj/GUI_BMPfile.c
deleted file mode 100644
index 8de80be..0000000
--- a/2.13inch_e-paper_d_code/wiringpi/obj/GUI_BMPfile.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*****************************************************************************
-* | File      	:   GUI_BMPfile.c
-* | Author      :   Waveshare team
-* | Function    :   Hardware underlying interface
-* | Info        :
-*                Used to shield the underlying layers of each master
-*                and enhance portability
-*----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
-* | Info        :   
-* 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
-* 2.fix: GUI_ReadBmp()
-*   Now Xstart and Xstart can control the position of the picture normally, 
-*   and support the display of images of any size. If it is larger than 
-*   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
-******************************************************************************/
-
-#include "GUI_BMPfile.h"
-#include "GUI_Paint.h"
-#include "Debug.h"
-
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <stdlib.h>	//exit()
-#include <string.h> //memset()
-#include <math.h> //memset()
-
-UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
-{
-    FILE *fp;                     //Define a file pointer
-    BMPFILEHEADER bmpFileHeader;  //Define a bmp file header structure
-    BMPINFOHEADER bmpInfoHeader;  //Define a bmp info header structure
-    
-    
-    // Binary file open
-    if((fp = fopen(path, "rb")) == NULL) {
-        Debug("Cann't open the file!\n");
-        exit(0);
-    }
-
-    // Set the file pointer from the beginning
-    fseek(fp, 0, SEEK_SET);
-    fread(&bmpFileHeader, sizeof(BMPFILEHEADER), 1, fp);    //sizeof(BMPFILEHEADER) must be 14
-    fread(&bmpInfoHeader, sizeof(BMPINFOHEADER), 1, fp);    //sizeof(BMPFILEHEADER) must be 50
-    printf("pixel = %d * %d\r\n", bmpInfoHeader.biWidth, bmpInfoHeader.biHeight);
-    
-    UWORD Image_Width_Byte = (bmpInfoHeader.biWidth % 8 == 0)? (bmpInfoHeader.biWidth / 8): (bmpInfoHeader.biWidth / 8 + 1);
-    UWORD Bmp_Width_Byte = (Image_Width_Byte % 4 == 0) ? Image_Width_Byte: ((Image_Width_Byte / 4 + 1) * 4);    
-    UBYTE Image[Image_Width_Byte * bmpInfoHeader.biHeight];
-    memset(Image, 0xFF, Image_Width_Byte * bmpInfoHeader.biHeight);
-    
-    // Determine if it is a monochrome bitmap
-    int readbyte = bmpInfoHeader.biBitCount;
-    if(readbyte != 1){
-        Debug("the bmp Image is not a monochrome bitmap!\n");
-        exit(0);
-    }
-    
-    // Determine black and white based on the palette
-    UWORD i;
-    UWORD Bcolor, Wcolor;
-    UWORD bmprgbquadsize = pow(2, bmpInfoHeader.biBitCount);// 2^1 = 2
-    BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
-    
-    for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
-    }
-    if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
-        Bcolor = BLACK;
-        Wcolor = WHITE;
-    }else{
-        Bcolor = WHITE;
-        Wcolor = BLACK;
-    }
-    
-    // Read image data into the cache
-    UWORD x, y;
-    UBYTE Rdata; 
-    fseek(fp, bmpFileHeader.bOffset, SEEK_SET);
-    for(y = 0; y < bmpInfoHeader.biHeight; y++) {//Total display column
-        for(x = 0; x < Bmp_Width_Byte; x++) {//Show a line in the line
-            if(fread((char *)&Rdata, 1, readbyte, fp) != readbyte) {
-                perror("get bmpdata:\r\n");
-                break;
-            }
-            if(x < Image_Width_Byte) { //bmp
-                Image[x + (bmpInfoHeader.biHeight - y - 1) * Image_Width_Byte] =  Rdata;
-                // printf("rdata = %d\r\n", Rdata);
-            }
-        }
-    }    
-    fclose(fp);
-    
-    // Refresh the image to the display buffer based on the displayed orientation
-    UBYTE color, temp;
-    for(y = 0; y < bmpInfoHeader.biHeight; y++){
-        for(x = 0; x < bmpInfoHeader.biWidth; x++){
-            if(x > Paint.Width || y > Paint.Height){
-                break;
-            }
-            temp = Image[(x / 8) + (y * Image_Width_Byte)];
-            color = (((temp << (x%8)) & 0x80) == 0x80) ?Bcolor:Wcolor;      
-            Paint_SetPixel(Xstart + x, Ystart + y, color);
-        }
-    }
-    return 0;
-}
-
-
diff --git a/2.7inch_e-paper_b_code/bcm2835/obj/GUI_BMPfile.c b/2.7inch_e-paper_b_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/2.7inch_e-paper_b_code/bcm2835/obj/GUI_BMPfile.c
+++ b/2.7inch_e-paper_b_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/2.7inch_e-paper_b_code/python2/readme.txt b/2.7inch_e-paper_b_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.7inch_e-paper_b_code/python2/readme.txt
+++ b/2.7inch_e-paper_b_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.7inch_e-paper_b_code/python3/readme.txt b/2.7inch_e-paper_b_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.7inch_e-paper_b_code/python3/readme.txt
+++ b/2.7inch_e-paper_b_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.7inch_e-paper_b_code/wiringpi/obj/GUI_BMPfile.c b/2.7inch_e-paper_b_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/2.7inch_e-paper_b_code/wiringpi/obj/GUI_BMPfile.c
+++ b/2.7inch_e-paper_b_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/2.7inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c b/2.7inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/2.7inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
+++ b/2.7inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/2.7inch_e-paper_code/python2/readme.txt b/2.7inch_e-paper_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.7inch_e-paper_code/python2/readme.txt
+++ b/2.7inch_e-paper_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.7inch_e-paper_code/python3/readme.txt b/2.7inch_e-paper_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.7inch_e-paper_code/python3/readme.txt
+++ b/2.7inch_e-paper_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.7inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c b/2.7inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/2.7inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
+++ b/2.7inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/2.13inch_e-paper_d_code/bcm2835/obj/GUI_BMPfile.c b/2.9inch_e-paper_b
similarity index 78%
rename from 2.13inch_e-paper_d_code/bcm2835/obj/GUI_BMPfile.c
rename to 2.9inch_e-paper_b
index 8de80be..b0aea56 100644
--- a/2.13inch_e-paper_d_code/bcm2835/obj/GUI_BMPfile.c
+++ b/2.9inch_e-paper_b
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/2.9inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c b/2.9inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
deleted file mode 100644
index 8de80be..0000000
--- a/2.9inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*****************************************************************************
-* | File      	:   GUI_BMPfile.c
-* | Author      :   Waveshare team
-* | Function    :   Hardware underlying interface
-* | Info        :
-*                Used to shield the underlying layers of each master
-*                and enhance portability
-*----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
-* | Info        :   
-* 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
-* 2.fix: GUI_ReadBmp()
-*   Now Xstart and Xstart can control the position of the picture normally, 
-*   and support the display of images of any size. If it is larger than 
-*   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
-******************************************************************************/
-
-#include "GUI_BMPfile.h"
-#include "GUI_Paint.h"
-#include "Debug.h"
-
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <stdlib.h>	//exit()
-#include <string.h> //memset()
-#include <math.h> //memset()
-
-UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
-{
-    FILE *fp;                     //Define a file pointer
-    BMPFILEHEADER bmpFileHeader;  //Define a bmp file header structure
-    BMPINFOHEADER bmpInfoHeader;  //Define a bmp info header structure
-    
-    
-    // Binary file open
-    if((fp = fopen(path, "rb")) == NULL) {
-        Debug("Cann't open the file!\n");
-        exit(0);
-    }
-
-    // Set the file pointer from the beginning
-    fseek(fp, 0, SEEK_SET);
-    fread(&bmpFileHeader, sizeof(BMPFILEHEADER), 1, fp);    //sizeof(BMPFILEHEADER) must be 14
-    fread(&bmpInfoHeader, sizeof(BMPINFOHEADER), 1, fp);    //sizeof(BMPFILEHEADER) must be 50
-    printf("pixel = %d * %d\r\n", bmpInfoHeader.biWidth, bmpInfoHeader.biHeight);
-    
-    UWORD Image_Width_Byte = (bmpInfoHeader.biWidth % 8 == 0)? (bmpInfoHeader.biWidth / 8): (bmpInfoHeader.biWidth / 8 + 1);
-    UWORD Bmp_Width_Byte = (Image_Width_Byte % 4 == 0) ? Image_Width_Byte: ((Image_Width_Byte / 4 + 1) * 4);    
-    UBYTE Image[Image_Width_Byte * bmpInfoHeader.biHeight];
-    memset(Image, 0xFF, Image_Width_Byte * bmpInfoHeader.biHeight);
-    
-    // Determine if it is a monochrome bitmap
-    int readbyte = bmpInfoHeader.biBitCount;
-    if(readbyte != 1){
-        Debug("the bmp Image is not a monochrome bitmap!\n");
-        exit(0);
-    }
-    
-    // Determine black and white based on the palette
-    UWORD i;
-    UWORD Bcolor, Wcolor;
-    UWORD bmprgbquadsize = pow(2, bmpInfoHeader.biBitCount);// 2^1 = 2
-    BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
-    
-    for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
-    }
-    if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
-        Bcolor = BLACK;
-        Wcolor = WHITE;
-    }else{
-        Bcolor = WHITE;
-        Wcolor = BLACK;
-    }
-    
-    // Read image data into the cache
-    UWORD x, y;
-    UBYTE Rdata; 
-    fseek(fp, bmpFileHeader.bOffset, SEEK_SET);
-    for(y = 0; y < bmpInfoHeader.biHeight; y++) {//Total display column
-        for(x = 0; x < Bmp_Width_Byte; x++) {//Show a line in the line
-            if(fread((char *)&Rdata, 1, readbyte, fp) != readbyte) {
-                perror("get bmpdata:\r\n");
-                break;
-            }
-            if(x < Image_Width_Byte) { //bmp
-                Image[x + (bmpInfoHeader.biHeight - y - 1) * Image_Width_Byte] =  Rdata;
-                // printf("rdata = %d\r\n", Rdata);
-            }
-        }
-    }    
-    fclose(fp);
-    
-    // Refresh the image to the display buffer based on the displayed orientation
-    UBYTE color, temp;
-    for(y = 0; y < bmpInfoHeader.biHeight; y++){
-        for(x = 0; x < bmpInfoHeader.biWidth; x++){
-            if(x > Paint.Width || y > Paint.Height){
-                break;
-            }
-            temp = Image[(x / 8) + (y * Image_Width_Byte)];
-            color = (((temp << (x%8)) & 0x80) == 0x80) ?Bcolor:Wcolor;      
-            Paint_SetPixel(Xstart + x, Ystart + y, color);
-        }
-    }
-    return 0;
-}
-
-
diff --git a/2.9inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c b/2.9inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
deleted file mode 100644
index 8de80be..0000000
--- a/2.9inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*****************************************************************************
-* | File      	:   GUI_BMPfile.c
-* | Author      :   Waveshare team
-* | Function    :   Hardware underlying interface
-* | Info        :
-*                Used to shield the underlying layers of each master
-*                and enhance portability
-*----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
-* | Info        :   
-* 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
-* 2.fix: GUI_ReadBmp()
-*   Now Xstart and Xstart can control the position of the picture normally, 
-*   and support the display of images of any size. If it is larger than 
-*   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
-******************************************************************************/
-
-#include "GUI_BMPfile.h"
-#include "GUI_Paint.h"
-#include "Debug.h"
-
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <stdlib.h>	//exit()
-#include <string.h> //memset()
-#include <math.h> //memset()
-
-UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
-{
-    FILE *fp;                     //Define a file pointer
-    BMPFILEHEADER bmpFileHeader;  //Define a bmp file header structure
-    BMPINFOHEADER bmpInfoHeader;  //Define a bmp info header structure
-    
-    
-    // Binary file open
-    if((fp = fopen(path, "rb")) == NULL) {
-        Debug("Cann't open the file!\n");
-        exit(0);
-    }
-
-    // Set the file pointer from the beginning
-    fseek(fp, 0, SEEK_SET);
-    fread(&bmpFileHeader, sizeof(BMPFILEHEADER), 1, fp);    //sizeof(BMPFILEHEADER) must be 14
-    fread(&bmpInfoHeader, sizeof(BMPINFOHEADER), 1, fp);    //sizeof(BMPFILEHEADER) must be 50
-    printf("pixel = %d * %d\r\n", bmpInfoHeader.biWidth, bmpInfoHeader.biHeight);
-    
-    UWORD Image_Width_Byte = (bmpInfoHeader.biWidth % 8 == 0)? (bmpInfoHeader.biWidth / 8): (bmpInfoHeader.biWidth / 8 + 1);
-    UWORD Bmp_Width_Byte = (Image_Width_Byte % 4 == 0) ? Image_Width_Byte: ((Image_Width_Byte / 4 + 1) * 4);    
-    UBYTE Image[Image_Width_Byte * bmpInfoHeader.biHeight];
-    memset(Image, 0xFF, Image_Width_Byte * bmpInfoHeader.biHeight);
-    
-    // Determine if it is a monochrome bitmap
-    int readbyte = bmpInfoHeader.biBitCount;
-    if(readbyte != 1){
-        Debug("the bmp Image is not a monochrome bitmap!\n");
-        exit(0);
-    }
-    
-    // Determine black and white based on the palette
-    UWORD i;
-    UWORD Bcolor, Wcolor;
-    UWORD bmprgbquadsize = pow(2, bmpInfoHeader.biBitCount);// 2^1 = 2
-    BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
-    
-    for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
-    }
-    if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
-        Bcolor = BLACK;
-        Wcolor = WHITE;
-    }else{
-        Bcolor = WHITE;
-        Wcolor = BLACK;
-    }
-    
-    // Read image data into the cache
-    UWORD x, y;
-    UBYTE Rdata; 
-    fseek(fp, bmpFileHeader.bOffset, SEEK_SET);
-    for(y = 0; y < bmpInfoHeader.biHeight; y++) {//Total display column
-        for(x = 0; x < Bmp_Width_Byte; x++) {//Show a line in the line
-            if(fread((char *)&Rdata, 1, readbyte, fp) != readbyte) {
-                perror("get bmpdata:\r\n");
-                break;
-            }
-            if(x < Image_Width_Byte) { //bmp
-                Image[x + (bmpInfoHeader.biHeight - y - 1) * Image_Width_Byte] =  Rdata;
-                // printf("rdata = %d\r\n", Rdata);
-            }
-        }
-    }    
-    fclose(fp);
-    
-    // Refresh the image to the display buffer based on the displayed orientation
-    UBYTE color, temp;
-    for(y = 0; y < bmpInfoHeader.biHeight; y++){
-        for(x = 0; x < bmpInfoHeader.biWidth; x++){
-            if(x > Paint.Width || y > Paint.Height){
-                break;
-            }
-            temp = Image[(x / 8) + (y * Image_Width_Byte)];
-            color = (((temp << (x%8)) & 0x80) == 0x80) ?Bcolor:Wcolor;      
-            Paint_SetPixel(Xstart + x, Ystart + y, color);
-        }
-    }
-    return 0;
-}
-
-
diff --git a/2.9inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c b/2.9inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/2.9inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
+++ b/2.9inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/2.9inch_e-paper_code/python2/readme.txt b/2.9inch_e-paper_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.9inch_e-paper_code/python2/readme.txt
+++ b/2.9inch_e-paper_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.9inch_e-paper_code/python3/readme.txt b/2.9inch_e-paper_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/2.9inch_e-paper_code/python3/readme.txt
+++ b/2.9inch_e-paper_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/2.9inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c b/2.9inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/2.9inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
+++ b/2.9inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/4.2inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c b/4.2inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/4.2inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
+++ b/4.2inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/4.2inch_e-paper_b&c_code/python2/readme.txt b/4.2inch_e-paper_b&c_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/4.2inch_e-paper_b&c_code/python2/readme.txt
+++ b/4.2inch_e-paper_b&c_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/4.2inch_e-paper_b&c_code/python3/readme.txt b/4.2inch_e-paper_b&c_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/4.2inch_e-paper_b&c_code/python3/readme.txt
+++ b/4.2inch_e-paper_b&c_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/4.2inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c b/4.2inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/4.2inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
+++ b/4.2inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/4.2inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c b/4.2inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/4.2inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
+++ b/4.2inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/4.2inch_e-paper_code/python2/readme.txt b/4.2inch_e-paper_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/4.2inch_e-paper_code/python2/readme.txt
+++ b/4.2inch_e-paper_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/4.2inch_e-paper_code/python3/readme.txt b/4.2inch_e-paper_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/4.2inch_e-paper_code/python3/readme.txt
+++ b/4.2inch_e-paper_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/4.2inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c b/4.2inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/4.2inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
+++ b/4.2inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/5.83inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c b/5.83inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/5.83inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
+++ b/5.83inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/5.83inch_e-paper_b&c_code/python2/readme.txt b/5.83inch_e-paper_b&c_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/5.83inch_e-paper_b&c_code/python2/readme.txt
+++ b/5.83inch_e-paper_b&c_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/5.83inch_e-paper_b&c_code/python3/readme.txt b/5.83inch_e-paper_b&c_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/5.83inch_e-paper_b&c_code/python3/readme.txt
+++ b/5.83inch_e-paper_b&c_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/5.83inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c b/5.83inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/5.83inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
+++ b/5.83inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/5.83inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c b/5.83inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/5.83inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
+++ b/5.83inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/5.83inch_e-paper_code/python2/readme.txt b/5.83inch_e-paper_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/5.83inch_e-paper_code/python2/readme.txt
+++ b/5.83inch_e-paper_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/5.83inch_e-paper_code/python3/readme.txt b/5.83inch_e-paper_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/5.83inch_e-paper_code/python3/readme.txt
+++ b/5.83inch_e-paper_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/5.83inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c b/5.83inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/5.83inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
+++ b/5.83inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/7.5inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c b/7.5inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/7.5inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
+++ b/7.5inch_e-paper_b&c_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/7.5inch_e-paper_b&c_code/python2/readme.txt b/7.5inch_e-paper_b&c_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/7.5inch_e-paper_b&c_code/python2/readme.txt
+++ b/7.5inch_e-paper_b&c_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/7.5inch_e-paper_b&c_code/python3/readme.txt b/7.5inch_e-paper_b&c_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/7.5inch_e-paper_b&c_code/python3/readme.txt
+++ b/7.5inch_e-paper_b&c_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/7.5inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c b/7.5inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/7.5inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
+++ b/7.5inch_e-paper_b&c_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/7.5inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c b/7.5inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/7.5inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
+++ b/7.5inch_e-paper_code/bcm2835/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;
diff --git a/7.5inch_e-paper_code/python2/readme.txt b/7.5inch_e-paper_code/python2/readme.txt
index ffb8fc9..bc15227 100644
--- a/7.5inch_e-paper_code/python2/readme.txt
+++ b/7.5inch_e-paper_code/python2/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/7.5inch_e-paper_code/python3/readme.txt b/7.5inch_e-paper_code/python3/readme.txt
index ffb8fc9..bc15227 100644
--- a/7.5inch_e-paper_code/python3/readme.txt
+++ b/7.5inch_e-paper_code/python3/readme.txt
@@ -69,6 +69,11 @@
 
   == How to use ==
   1, install the Python libraries.
+  sudo apt-get install python-pip 
+  sudo pip install RPi.GPIO
+  sudo pip install spidev
+  sudo apt-get install ttf-wqy-zenhei ttf-wqy-microhei
+  
   2, change the current directory to where the demo files located.
   3, run the demo with: 
      python main.py
diff --git a/7.5inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c b/7.5inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
index 8de80be..b0aea56 100644
--- a/7.5inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
+++ b/7.5inch_e-paper_code/wiringpi/obj/GUI_BMPfile.c
@@ -6,33 +6,34 @@
 *                Used to shield the underlying layers of each master
 *                and enhance portability
 *----------------
-* |	This version:   V2.0
-* | Date        :   2018-11-12
+* |	This version:   V2.1
+* | Date        :   2019-03-29
 * | Info        :   
 * 1.Change file name: GUI_BMP.c -> GUI_BMPfile.c
 * 2.fix: GUI_ReadBmp()
 *   Now Xstart and Xstart can control the position of the picture normally, 
 *   and support the display of images of any size. If it is larger than 
 *   the actual display range, it will not be displayed.
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documnetation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to  whom the Software is
-# furished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
+* 3.fix:line87  &bmprgbquad[i * 4] =》 &bmprgbquad[i]
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documnetation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to  whom the Software is
+* furished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*
 ******************************************************************************/
 
 #include "GUI_BMPfile.h"
@@ -84,7 +85,8 @@ UBYTE GUI_ReadBmp(const char *path, UWORD Xstart, UWORD Ystart)
     BMPRGBQUAD bmprgbquad[bmprgbquadsize];        //palette
     
     for(i = 0; i < bmprgbquadsize; i++){
-        fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        // fread(&bmprgbquad[i * 4], sizeof(BMPRGBQUAD), 1, fp);
+        fread(&bmprgbquad[i], sizeof(BMPRGBQUAD), 1, fp);
     }
     if(bmprgbquad[0].rgbBlue == 0xff && bmprgbquad[0].rgbGreen == 0xff && bmprgbquad[0].rgbRed == 0xff){
         Bcolor = BLACK;