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e-Paper/Arduino/epd1in54b_V2/epd1in54b_V2.cpp

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+/**
+ *  @filename   :   epd1in54b.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 "epd1in54b_V2.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) {
+    /* this calls the peripheral hardware interface, see epdif */
+    if (IfInit() != 0) {
+        return -1;
+    }
+    /* EPD hardware init start */
+    Reset();
+   
+    WaitUntilIdle();   
+    SendCommand(0x12);  //SWRESET
+    WaitUntilIdle();   
+
+    SendCommand(0x01); //Driver output control      
+    SendData(0xC7);
+    SendData(0x00);
+    SendData(0x01);
+
+    SendCommand(0x11); //data entry mode       
+    SendData(0x01);
+
+    SendCommand(0x44); //set Ram-X address start/end position   
+    SendData(0x00);
+    SendData(0x18);    //0x18-->(24+1)*8=200
+
+    SendCommand(0x45); //set Ram-Y address start/end position          
+    SendData(0xC7);    //0xC7-->(199+1)=200
+    SendData(0x00);
+    SendData(0x00);
+    SendData(0x00); 
+
+    SendCommand(0x3C); //BorderWavefrom
+    SendData(0x05);
+
+    SendCommand(0x18); //Read built-in temperature sensor
+    SendData(0x80);
+
+    SendCommand(0x4E);   // set RAM x address count to 0;
+    SendData(0x00);
+    SendCommand(0x4F);   // set RAM y address count to 0X199;    
+    SendData(0xC7);
+    SendData(0x00);
+    WaitUntilIdle();
+   
+    /* EPD hardware init end */
+
+    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(1) {
+        if(DigitalRead(busy_pin) == 0)
+            break;
+        DelayMs(100);
+    }      
+}
+
+/**
+ *  @brief: module reset.
+ *          often used to awaken the module in deep sleep,
+ *          see Epd::Sleep();
+ */
+void Epd::Reset(void) {
+    DigitalWrite(reset_pin, HIGH);
+    DelayMs(200); 
+    DigitalWrite(reset_pin, LOW);                //module reset    
+    DelayMs(10);
+    DigitalWrite(reset_pin, HIGH);
+    DelayMs(200);    
+}
+
+/**
+ *  @brief: set the look-up tables
+ */
+void Epd::DisplayFrame(const unsigned char* frame_buffer_black, const unsigned char* frame_buffer_red) {
+    unsigned char temp;
+    unsigned int i;
+    
+    SendCommand(0x24);
+    for(i=0;i<this->width * this->height / 8;i++)
+    {               
+        SendData(pgm_read_byte(&frame_buffer_black[i]));
+    }
+    SendCommand(0x26);
+    for(i=0;i<this->width * this->height / 8;i++)
+    {               
+        SendData(~pgm_read_byte(&frame_buffer_red[i]));
+    }
+    
+    SendCommand(0x22);
+    SendData(0xF7);
+    SendCommand(0x20);
+    WaitUntilIdle();
+}
+
+void Epd::DisplayClear() {
+    unsigned char temp;
+    unsigned int i;
+    
+    SendCommand(0x24);
+    for(i=0;i<this->width * this->height / 8;i++)
+    {               
+        SendData(0xff);
+    }
+    SendCommand(0x26);
+    for(i=0;i<this->width * this->height / 8;i++)
+    {               
+        SendData(0x00);
+    }
+    
+    SendCommand(0x22);
+    SendData(0xF7);
+    SendCommand(0x20);
+    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::Init() to awaken
+ */
+void Epd::Sleep() {
+    SendCommand(0x10);         //power setting
+    SendData(0x01);        //gate switch to external
+    DelayMs(100);
+}
+
+
+
+/* END OF FILE */
+
+