2020-12-10

Arduino/epd2in66b/epd2in66b.cpp

@@ -0,0 +1,199 @@
+/**
+ *  @filename   :   epd2in66b.cpp
+ *  @brief      :   Implements for e-paper library
+ *  @author     :   Waveshare
+ *
+ *  Copyright (C) Waveshare     Dec 02 2020
+ *
+ * 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 "epd2in66b.h"
+#include "imagedata.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;
+};
+
+/**
+ *  @brief: module reset.
+ *          often used to awaken the module in deep sleep,
+ *          see Epd::Sleep();
+ */
+static void Epd::Reset(void) {
+    DigitalWrite(reset_pin, HIGH);
+    DelayMs(200);   
+    DigitalWrite(reset_pin, LOW);                //module reset    
+    DelayMs(2);
+    DigitalWrite(reset_pin, HIGH);
+    DelayMs(200);    
+}
+
+/**
+ *  @brief: Initialize the e-Paper register
+ */
+int Epd::Init(void) {
+	if (IfInit() != 0) {
+	  return -1;
+	}
+	Reset();
+
+	WaitUntilIdle();
+	SendCommand(0x12);//soft  reset
+	WaitUntilIdle();
+	/*	Y increment, X increment	*/
+	SendCommand(0x11);
+	SendData(0x03);
+	/*	Set RamX-address Start/End position	*/
+	SendCommand(0x44);
+	SendData(0x00);	
+	SendData(((width-1) >> 3) & 0x1f);
+	/*	Set RamY-address Start/End position	*/
+	SendCommand(0x45);
+	SendData(0);
+	SendData(0);
+	SendData((height&0xff));
+	SendData((height&0x100)>>8);
+
+	SendCommand(0x21); //  Display update control
+	SendData(0x00);
+	SendData(0x80);	
+
+    SendCommand(0x4E); // SET_RAM_X_ADDRESS_COUNTER
+    SendData(0x00);
+    SendCommand(0x4F); // SET_RAM_Y_ADDRESS_COUNTER
+    SendData(0x00);
+    SendData(0x00);
+	
+	WaitUntilIdle();
+	return 0;
+}
+
+/**
+ *  @brief: basic function for sending commands
+ */
+static void Epd::SendCommand(unsigned char command) {
+    DigitalWrite(dc_pin, LOW);
+    SpiTransfer(command);
+}
+
+/**
+ *  @brief: basic function for sending data
+ */
+static void Epd::SendData(unsigned char data) {
+    DigitalWrite(dc_pin, HIGH);
+    SpiTransfer(data);
+}
+
+/**
+ *  @brief: Wait until the busy_pin goes HIGH
+ */
+static void Epd::WaitUntilIdle(void) {
+	Serial.print("e-Paper busy \r\n ");
+	UBYTE busy;
+	do {
+		DelayMs(20);
+		busy = DigitalRead(busy_pin);
+	} while(busy);    
+	DelayMs(20);
+	Serial.print("e-Paper busy release \r\n ");
+}
+
+/******************************************************************************
+function :	Turn On Display
+parameter:
+******************************************************************************/
+static void Epd::TurnOnDisplay(void)
+{
+    SendCommand(0x20);
+    WaitUntilIdle();
+}
+
+/******************************************************************************
+function :  Display Array data
+******************************************************************************/
+void Epd::DisplayFrame(const UBYTE *Image, const UBYTE *ImageRed) {
+    UWORD Width, Height;
+    Width = (width % 8 == 0)? (width / 8 ): (width / 8 + 1);
+    Height = height;
+
+    SendCommand(0x24);
+    for (UWORD j = 0; j <Height; j++) {
+        for (UWORD i = 0; i <Width; i++) {
+            SendData(pgm_read_byte(&Image[i + j * Width]));
+        }
+    }
+    SendCommand(0x26);
+    for (UWORD j = 0; j <Height; j++) {
+        for (UWORD i = 0; i <Width; i++) {
+            SendData(~pgm_read_byte(&ImageRed[i + j * Width]));
+        }
+    }
+    TurnOnDisplay();
+}
+
+/******************************************************************************
+function :  Clear Screen
+parameter:
+  mode: 0:just partial mode
+        1:clear all
+******************************************************************************/
+void Epd::Clear(void) {
+    UWORD Width, Height;
+    Width = (width % 8 == 0)? (width / 8 ): (width / 8 + 1);
+    Height = height;
+    SendCommand(0x24);
+    for (UWORD j = 0; j <=Height; j++) {
+        for (UWORD i = 0; i < Width; i++) {
+            SendData(0xff);
+        }
+    }
+    SendCommand(0x26);
+    for (UWORD j = 0; j <=Height; j++) {
+        for (UWORD i = 0; i < Width; i++) {
+            SendData(0x00);
+        }
+    }
+    TurnOnDisplay();
+}
+
+/**
+ *  @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
+ *          You can use EPD_Reset() to awaken
+ */
+void Epd::Sleep(void) {
+    SendCommand(0X10);
+    SendData(0x01);
+}
+
+
+
+/* END OF FILE */