add arduino code

2.7inch_e-paper_code/RaspberryPi/bcm2835/obj/DEV_Config.c

@@ -0,0 +1,102 @@
+/*****************************************************************************
+* | File      	:   DEV_Config.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        :   2018-10-30
+* | Info        :
+* 1.add:
+*   UBYTE\UWORD\UDOUBLE
+* 2.Change:
+*   EPD_RST -> EPD_RST_PIN
+*   EPD_DC -> EPD_DC_PIN
+*   EPD_CS -> EPD_CS_PIN
+*   EPD_BUSY -> EPD_BUSY_PIN
+* 3.Remote:
+*   EPD_RST_1\EPD_RST_0
+*   EPD_DC_1\EPD_DC_0
+*   EPD_CS_1\EPD_CS_0
+*   EPD_BUSY_1\EPD_BUSY_0
+* 4.add:
+*   #define DEV_Digital_Write(_pin, _value) bcm2835_gpio_write(_pin, _value)
+*   #define DEV_Digital_Read(_pin) bcm2835_gpio_lev(_pin)
+*   #define DEV_SPI_WriteByte(__value) bcm2835_spi_transfer(__value)
+#
+# 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 "DEV_Config.h"
+
+/******************************************************************************
+function:	Initialization pin
+parameter:
+Info:
+******************************************************************************/
+static void DEV_GPIOConfig(void)
+{
+    //output
+	bcm2835_gpio_fsel(EPD_RST_PIN, BCM2835_GPIO_FSEL_OUTP);
+    bcm2835_gpio_fsel(EPD_DC_PIN, BCM2835_GPIO_FSEL_OUTP);
+    bcm2835_gpio_fsel(EPD_CS_PIN, BCM2835_GPIO_FSEL_OUTP);
+	
+    //intput
+	bcm2835_gpio_fsel(EPD_BUSY_PIN,    BCM2835_GPIO_FSEL_INPT);
+	
+}
+
+/******************************************************************************
+function:	Module Initialize, the BCM2835 library and initialize the pins, SPI protocol
+parameter:
+Info:
+******************************************************************************/
+UBYTE DEV_ModuleInit(void)
+{
+    if(!bcm2835_init()) {
+        printf("bcm2835 init failed  !!! \r\n");
+        return 1;
+    } else {
+        printf("bcm2835 init success !!! \r\n");
+    }
+	
+	DEV_GPIOConfig();
+
+    bcm2835_spi_begin();                                         //Start spi interface, set spi pin for the reuse function
+    bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);     //High first transmission
+    bcm2835_spi_setDataMode(BCM2835_SPI_MODE0);                  //spi mode 0
+    bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_128);  //Frequency
+    bcm2835_spi_chipSelect(BCM2835_SPI_CS0);                     //set CE0
+    bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW);     //enable cs0
+
+    return 0;
+}
+
+/******************************************************************************
+function:	Module exits, closes SPI and BCM2835 library
+parameter:
+Info:
+******************************************************************************/
+void DEV_ModuleExit(void)
+{
+    bcm2835_spi_end();
+    bcm2835_close();
+}