add arduino code

7.5inch_e-paper_code/arduino/epd7in5-demo/epd7in5-demo.ino

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+/**
+ *  @filename   :   epd7in5-demo.ino
+ *  @brief      :   7.5inch e-paper display demo
+ *  @author     :   Yehui from Waveshare
+ *
+ *  Copyright (C) Waveshare     July 10 2017
+ *
+ * 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 <SPI.h>
+#include <epd7in5.h>
+#include "imagedata.h"
+
+void setup() {
+  // put your setup code here, to run once:
+    Serial.begin(9600);
+    Epd epd;
+    if (epd.Init() != 0) {
+        Serial.print("e-Paper init failed");
+        return;
+    }
+    epd.DisplayFrame(IMAGE_DATA);
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+}

7.5inch_e-paper_code/arduino/epd7in5-demo/imagedata.h

@@ -0,0 +1,30 @@
+/**
+ *  @filename   :   imagedata.h
+ *  @brief      :   head file for imagedata.cpp
+ *
+ *  Copyright (C) Waveshare     July 10 2017
+ *
+ * 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.
+ */
+
+extern const unsigned char IMAGE_DATA[];
+
+/* FILE END */
+
+

7.5inch_e-paper_code/arduino/libraries/epd7in5.cpp

@@ -0,0 +1,172 @@
+/**
+ *  @filename   :   epd7in5.cpp
+ *  @brief      :   Implements for e-paper library
+ *  @author     :   Yehui from Waveshare
+ *
+ *  Copyright (C) Waveshare     August 10 2017
+ *
+ * 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 <stdlib.h>
+#include "epd7in5.h"
+
+Epd::~Epd() {
+};
+
+Epd::Epd() {
+    reset_pin = RST_PIN;
+    dc_pin = DC_PIN;
+    cs_pin = CS_PIN;
+    busy_pin = BUSY_PIN;
+    width = EPD_WIDTH;
+    height = EPD_HEIGHT;
+};
+
+int Epd::Init(void) {
+    if (IfInit() != 0) {
+        return -1;
+    }
+    Reset();
+
+    SendCommand(POWER_SETTING); 
+    SendData(0x37);
+    SendData(0x00);
+
+    SendCommand(PANEL_SETTING);
+    SendData(0xCF);
+    SendData(0x08);
+    
+    SendCommand(BOOSTER_SOFT_START);
+    SendData(0xc7);     
+    SendData(0xcc);
+    SendData(0x28);
+
+    SendCommand(POWER_ON);
+    WaitUntilIdle();
+
+    SendCommand(PLL_CONTROL);
+    SendData(0x3c);        
+
+    SendCommand(TEMPERATURE_CALIBRATION);
+    SendData(0x00);
+
+    SendCommand(VCOM_AND_DATA_INTERVAL_SETTING);
+    SendData(0x77);
+
+    SendCommand(TCON_SETTING);
+    SendData(0x22);
+
+    SendCommand(TCON_RESOLUTION);
+    SendData(0x02);     //source 640
+    SendData(0x80);
+    SendData(0x01);     //gate 384
+    SendData(0x80);
+
+    SendCommand(VCM_DC_SETTING);
+    SendData(0x1E);      //decide by LUT file
+
+    SendCommand(0xe5);           //FLASH MODE            
+    SendData(0x03);  
+
+    return 0;
+}
+
+/**
+ *  @brief: basic function for sending commands
+ */
+void Epd::SendCommand(unsigned char command) {
+    DigitalWrite(dc_pin, LOW);
+    SpiTransfer(command);
+}
+
+/**
+ *  @brief: basic function for sending data
+ */
+void Epd::SendData(unsigned char data) {
+    DigitalWrite(dc_pin, HIGH);
+    SpiTransfer(data);
+}
+
+/**
+ *  @brief: Wait until the busy_pin goes HIGH
+ */
+void Epd::WaitUntilIdle(void) {
+    while(DigitalRead(busy_pin) == 0) {      //0: busy, 1: idle
+        DelayMs(100);
+    }      
+}
+
+/**
+ *  @brief: module reset.
+ *          often used to awaken the module in deep sleep,
+ *          see Epd::Sleep();
+ */
+void Epd::Reset(void) {
+    DigitalWrite(reset_pin, LOW);                //module reset    
+    DelayMs(200);
+    DigitalWrite(reset_pin, HIGH);
+    DelayMs(200);    
+}
+
+void Epd::DisplayFrame(const unsigned char* frame_buffer) {
+    unsigned char temp1, temp2;
+    SendCommand(DATA_START_TRANSMISSION_1);
+    for(long i = 0; i < EPD_WIDTH / 8 * EPD_HEIGHT; i++) {   
+        temp1 = pgm_read_byte(&frame_buffer[i]);
+        for(unsigned char j = 0; j < 8; j++) {
+            if(temp1 & 0x80)
+                temp2 = 0x03;
+            else
+                temp2 = 0x00;
+            
+            temp2 <<= 4;
+            temp1 <<= 1;
+            j++;
+            if(temp1 & 0x80)
+                temp2 |= 0x03;
+            else
+                temp2 |= 0x00;
+            temp1 <<= 1;
+            SendData(temp2); 
+        }
+    }
+    SendCommand(DISPLAY_REFRESH);
+    DelayMs(100);
+    WaitUntilIdle();
+}
+
+/**
+ *  @brief: After this command is transmitted, the chip would enter the 
+ *          deep-sleep mode to save power. 
+ *          The deep sleep mode would return to standby by hardware reset. 
+ *          The only one parameter is a check code, the command would be
+ *          executed if check code = 0xA5. 
+ *          You can use EPD_Reset() to awaken
+ */
+void Epd::Sleep(void) {
+    SendCommand(POWER_OFF);
+    WaitUntilIdle();
+    SendCommand(DEEP_SLEEP);
+    SendData(0xa5);
+}
+
+/* END OF FILE */
+
+

7.5inch_e-paper_code/arduino/libraries/epd7in5.h

@@ -0,0 +1,98 @@
+/**
+ *  @filename   :   epd7in5.h
+ *  @brief      :   Header file for e-paper library epd7in5.cpp
+ *  @author     :   Yehui from Waveshare
+ *  
+ *  Copyright (C) Waveshare     August 10 2017
+ *
+ * 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.
+ */
+
+#ifndef EPD7IN5_H
+#define EPD7IN5_H
+
+#include "epdif.h"
+
+// Display resolution
+#define EPD_WIDTH       640
+#define EPD_HEIGHT      384
+
+// EPD7IN5 commands
+#define PANEL_SETTING                               0x00
+#define POWER_SETTING                               0x01
+#define POWER_OFF                                   0x02
+#define POWER_OFF_SEQUENCE_SETTING                  0x03
+#define POWER_ON                                    0x04
+#define POWER_ON_MEASURE                            0x05
+#define BOOSTER_SOFT_START                          0x06
+#define DEEP_SLEEP                                  0x07
+#define DATA_START_TRANSMISSION_1                   0x10
+#define DATA_STOP                                   0x11
+#define DISPLAY_REFRESH                             0x12
+#define IMAGE_PROCESS                               0x13
+#define LUT_FOR_VCOM                                0x20 
+#define LUT_BLUE                                    0x21
+#define LUT_WHITE                                   0x22
+#define LUT_GRAY_1                                  0x23
+#define LUT_GRAY_2                                  0x24
+#define LUT_RED_0                                   0x25
+#define LUT_RED_1                                   0x26
+#define LUT_RED_2                                   0x27
+#define LUT_RED_3                                   0x28
+#define LUT_XON                                     0x29
+#define PLL_CONTROL                                 0x30
+#define TEMPERATURE_SENSOR_COMMAND                  0x40
+#define TEMPERATURE_CALIBRATION                     0x41
+#define TEMPERATURE_SENSOR_WRITE                    0x42
+#define TEMPERATURE_SENSOR_READ                     0x43
+#define VCOM_AND_DATA_INTERVAL_SETTING              0x50
+#define LOW_POWER_DETECTION                         0x51
+#define TCON_SETTING                                0x60
+#define TCON_RESOLUTION                             0x61
+#define SPI_FLASH_CONTROL                           0x65
+#define REVISION                                    0x70
+#define GET_STATUS                                  0x71
+#define AUTO_MEASUREMENT_VCOM                       0x80
+#define READ_VCOM_VALUE                             0x81
+#define VCM_DC_SETTING                              0x82
+
+class Epd : EpdIf {
+public:
+    Epd();
+    ~Epd();
+    int  Init(void);
+    void WaitUntilIdle(void);
+    void Reset(void);
+    void SetLut(void);
+    void DisplayFrame(const unsigned char* frame_buffer);
+    void SendCommand(unsigned char command);
+    void SendData(unsigned char data);
+    void Sleep(void);
+private:
+    unsigned int reset_pin;
+    unsigned int dc_pin;
+    unsigned int cs_pin;
+    unsigned int busy_pin;
+    unsigned long width;
+    unsigned long height;
+};
+
+#endif /* EPD7IN5_H */
+
+/* END OF FILE */

7.5inch_e-paper_code/arduino/libraries/epdif.cpp

@@ -0,0 +1,66 @@
+/**
+ *  @filename   :   epdif.cpp
+ *  @brief      :   Implements EPD interface functions
+ *                  Users have to implement all the functions in epdif.cpp
+ *  @author     :   Yehui from Waveshare
+ *
+ *  Copyright (C) Waveshare     August 10 2017
+ *
+ * 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 "epdif.h"
+#include <spi.h>
+
+EpdIf::EpdIf() {
+};
+
+EpdIf::~EpdIf() {
+};
+
+void EpdIf::DigitalWrite(int pin, int value) {
+    digitalWrite(pin, value);
+}
+
+int EpdIf::DigitalRead(int pin) {
+    return digitalRead(pin);
+}
+
+void EpdIf::DelayMs(unsigned int delaytime) {
+    delay(delaytime);
+}
+
+void EpdIf::SpiTransfer(unsigned char data) {
+    digitalWrite(CS_PIN, LOW);
+    SPI.transfer(data);
+    digitalWrite(CS_PIN, HIGH);
+}
+
+int EpdIf::IfInit(void) {
+    pinMode(CS_PIN, OUTPUT);
+    pinMode(RST_PIN, OUTPUT);
+    pinMode(DC_PIN, OUTPUT);
+    pinMode(BUSY_PIN, INPUT); 
+    
+    SPI.begin();
+    SPI.beginTransaction(SPISettings(2000000, MSBFIRST, SPI_MODE0));
+    
+    return 0;
+}
+

7.5inch_e-paper_code/arduino/libraries/epdif.h

@@ -0,0 +1,51 @@
+/**
+ *  @filename   :   epdif.h
+ *  @brief      :   Header file of epdif.cpp providing EPD interface functions
+ *                  Users have to implement all the functions in epdif.cpp
+ *  @author     :   Yehui from Waveshare
+ *
+ *  Copyright (C) Waveshare     August 10 2017
+ *
+ * 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.
+ */
+
+#ifndef EPDIF_H
+#define EPDIF_H
+
+#include <arduino.h>
+
+// Pin definition
+#define RST_PIN         8
+#define DC_PIN          9
+#define CS_PIN          10
+#define BUSY_PIN        7
+
+class EpdIf {
+public:
+    EpdIf(void);
+    ~EpdIf(void);
+
+    static int  IfInit(void);
+    static void DigitalWrite(int pin, int value); 
+    static int  DigitalRead(int pin);
+    static void DelayMs(unsigned int delaytime);
+    static void SpiTransfer(unsigned char data);
+};
+
+#endif