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357
e-Paper/Arduino/epd5in79g/epd5in79g.cpp
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357
e-Paper/Arduino/epd5in79g/epd5in79g.cpp
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/**
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* @filename : epd2in66g.cpp
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* @brief : Implements for e-paper library
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* @author : Waveshare
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*
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* Copyright (C) Waveshare 2022/08/17
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documnetation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include "epd5in79g.h"
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Epd::~Epd() {
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};
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Epd::Epd() {
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reset_pin = RST_PIN;
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dc_pin = DC_PIN;
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cs_pin = CS_PIN;
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busy_pin = BUSY_PIN;
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WIDTH = EPD_WIDTH;
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HEIGHT = EPD_HEIGHT;
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};
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int Epd::Init() {
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/* this calls the peripheral hardware interface, see epdif */
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if (IfInit() != 0) {
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return -1;
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}
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Reset();
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SendCommand(0xA2); //********************
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SendData(0x01);
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SendCommand(0x00); //0x00
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SendData(0x03);
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SendData(0x29);
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SendCommand(0xA2); //********************
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SendData(0x02);
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SendCommand(0x00); //0x00
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SendData(0x07);
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SendData(0x29);
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SendCommand(0xA2); //********************
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SendData(0x00);
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SendCommand(0x50); //
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SendData(0x97);
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SendCommand(0x61); //0x61
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SendData(0x01);
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SendData(0x8c);
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SendData(0x01);
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SendData(0x10);
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SendCommand(0x06); //0x06
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SendData(0x38);
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SendData(0x38);
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SendData(0x38);
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SendData(0x00); //////////////////////////////////////////
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SendCommand(0xE9); //0xE0
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SendData(0x01);
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SendCommand(0xE0); //0xE0
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SendData(0x01);
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SendCommand(0x04);
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ReadBusyH(); //while(1);
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return 0;
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}
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/**
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* @brief: basic function for sending commands
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*/
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void Epd::SendCommand(unsigned char command) {
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DigitalWrite(dc_pin, LOW);
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SpiTransfer(command);
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}
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/**
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* @brief: basic function for sending data
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*/
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void Epd::SendData(unsigned char data) {
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DigitalWrite(dc_pin, HIGH);
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SpiTransfer(data);
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}
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/**
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* @brief: Wait until the busy_pin goes LOW
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*/
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void Epd::ReadBusyH(void) {
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Serial.print("e-Paper busy H\r\n ");
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while(DigitalRead(busy_pin) == LOW) { //LOW: busy, HIGH: idle
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DelayMs(5);
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}
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Serial.print("e-Paper busy release H\r\n ");
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}
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void Epd::ReadBusyL(void) {
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Serial.print("e-Paper busy L\r\n ");
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while(DigitalRead(busy_pin) == HIGH) { //LOW: idle, HIGH: busy
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DelayMs(5);
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}
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Serial.print("e-Paper busy release L\r\n ");
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}
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/**
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* @brief: module reset.
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* often used to awaken the module in deep sleep,
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* see Epd::Sleep();
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*/
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void Epd::Reset(void) {
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DigitalWrite(reset_pin, HIGH);
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DelayMs(20);
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DigitalWrite(reset_pin, LOW); //module reset
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DelayMs(2);
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DigitalWrite(reset_pin, HIGH);
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DelayMs(20);
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}
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/******************************************************************************
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function : Turn On Display
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parameter:
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******************************************************************************/
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void Epd::TurnOnDisplay(void)
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{
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SendCommand(0xA2);
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SendData(0x00);
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SendCommand(0x12);
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SendData(0x00);
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ReadBusyH();
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}
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/******************************************************************************
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function : Clear screen
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parameter:
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******************************************************************************/
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void Epd::Clear(UBYTE color)
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{
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UWORD Width, Height;
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Width = (WIDTH % 8 == 0)? (WIDTH / 8 ): (WIDTH / 8 + 1);
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Height = HEIGHT;
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SendCommand(0xA2); //********************
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SendData(0x01);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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SendData((color<<6) | (color<<4) | (color<<2) | color);
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}
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}
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SendCommand(0xA2); //********************
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SendData(0x02);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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SendData((color<<6) | (color<<4) | (color<<2) | color);
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}
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}
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TurnOnDisplay();
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}
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/******************************************************************************
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function : Sends the image buffer in RAM to e-Paper and displays
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parameter:
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******************************************************************************/
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void Epd::Display(UBYTE *Image)
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{
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UWORD Width, Height, Width1;
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Width1 = (WIDTH % 4 == 0)? (WIDTH / 4 ): (WIDTH / 4 + 1);
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Width =(WIDTH % 8 == 0)?(WIDTH / 8 ):(WIDTH / 8 + 1);
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Height = HEIGHT;
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SendCommand(0xA2); //********************
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SendData(0x01);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height/2; j++) {
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for (UWORD i = 0; i < Width; i++) {
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SendData(pgm_read_byte(&Image[i + j * Width1]));
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}
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for (UWORD i = 0; i < Width; i++) {
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SendData(pgm_read_byte(&Image[i + (Height - j - 1) * Width1]));
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}
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}
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SendCommand(0xA2); //********************
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SendData(0x02);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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SendData(pgm_read_byte(&Image[j * Width1 + i + Width]));
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}
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for (UWORD i = 0; i < Width; i++) {
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SendData(pgm_read_byte(&Image[(Height - j - 1) * Width1 + i + Width]));
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}
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}
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TurnOnDisplay();
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}
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void Epd::Display_part(UBYTE *Image, UWORD xstart, UWORD ystart, UWORD image_width, UWORD image_height)
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{
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UWORD Width, Width1, Width2, Height, i, j, xend, yend;
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Width = (WIDTH % 8 == 0)? (WIDTH / 8 ): (WIDTH / 8 + 1);
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Height = HEIGHT;
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xend = xstart + image_width;
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yend = ystart + image_height;
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if(xstart>395)
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{
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xstart = xstart - 396 ;
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xend = xstart + image_width;
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SendCommand(0xA2);
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SendData(0x01);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height/2; j++) {
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for (UWORD i = 0; i < Width; i++) {
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if(j >= ystart && i < xend/4 && i >= xstart/4)
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SendData(pgm_read_byte(&Image[(j - ystart) * image_width/4 + i - xstart/4]));
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else
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SendData(0x55);
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}
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for (UWORD i = 0; i < Width; i++) {
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if((Height - j) < yend && i < xend/4 && i >= xstart/4)
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SendData(pgm_read_byte(&Image[(yend - (Height - j)) * image_width/4 + i- xstart/4]));
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else
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SendData(0x55);
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}
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}
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SendCommand(0xA2);
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SendData(0x02);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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SendData(0x55);
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}
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}
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}
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else if(xend<396)
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{
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xend = xstart + image_width;
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SendCommand(0xA2);
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SendData(0x01);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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SendData(0x55);
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}
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}
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SendCommand(0xA2);
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SendData(0x02);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height/2; j++) {
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for (UWORD i = 0; i < Width; i++) {
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if(j >= ystart && i < xend/4 && i >= xstart/4)
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SendData(pgm_read_byte(&Image[(j - ystart) * image_width/4 + i - xstart/4]));
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else
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SendData(0x55);
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}
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for (UWORD i = 0; i < Width; i++) {
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if((Height - j) < yend && i < xend/4 && i >= xstart/4)
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SendData(pgm_read_byte(&Image[(yend - (Height - j)) * image_width/4 + i- xstart/4]));
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else
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SendData(0x55);
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}
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}
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}
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else
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{
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xend = xstart + image_width;
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Width1 = ((395 - xstart) % 4 == 0)?((395 - xstart) / 4 ):((395 - xstart) / 4 + 1);
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Width2 = ((xend - 396) % 4 == 0)?((xend - 396) / 4 ):((xend - 396) / 4 + 1);
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SendCommand(0xA2);
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SendData(0x01);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height/2; j++) {
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for (UWORD i = 0; i < Width; i++) {
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if(j >= ystart && i < Width2)
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SendData(pgm_read_byte(&Image[(j - ystart) * image_width/4 + i + Width1]));
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else
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SendData(0x55);
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}
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for (UWORD i = 0; i < Width; i++) {
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if((Height - j) < yend && i < Width2)
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SendData(pgm_read_byte(&Image[(yend - (Height - j)) * image_width/4 + i + Width1]));
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else
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SendData(0x55);
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}
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}
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SendCommand(0xA2);
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SendData(0x02);
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SendCommand(0x10);
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for (UWORD j = 0; j < Height/2; j++) {
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for (UWORD i = 0; i < Width; i++) {
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if(j >= ystart && i >= xstart/4)
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SendData(pgm_read_byte(&Image[(j - ystart) * image_width/4 + i - xstart/4]));
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else
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SendData(0x55);
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}
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for (UWORD i = 0; i < Width; i++) {
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if((Height - j) < yend && i >= xstart/4)
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SendData(pgm_read_byte(&Image[(yend - (Height - j)) * image_width/4 + i- xstart/4]));
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else
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SendData(0x55);
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}
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}
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}
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TurnOnDisplay();
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}
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/******************************************************************************
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function : Enter sleep mode
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parameter:
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******************************************************************************/
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void Epd::Sleep(void)
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{
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// SendCommand(0x02); // POWER_OFF
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// SendData(0X00);
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// ReadBusyH();
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SendCommand(0x07); // DEEP_SLEEP
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SendData(0XA5);
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}
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/* END OF FILE */
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