181 lines
4.8 KiB
C++
181 lines
4.8 KiB
C++
/**
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* @filename : epd7in5b_V2.cpp
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* @brief : Implements for e-paper library
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* @author : Yehui from Waveshare
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*
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* Copyright (C) Waveshare Nov 30 2020
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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 "epd7in5b_V2.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(void) {
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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(0x01); //POWER SETTING
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SendData(0x07);
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SendData(0x07); //VGH=20V,VGL=-20V
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SendData(0x3f); //VDH=15V
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SendData(0x3f); //VDL=-15V
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SendCommand(0x04); //POWER ON
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DelayMs(100);
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WaitUntilIdle();
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SendCommand(0X00); //PANNEL SETTING
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SendData(0x0F); //KW-3f KWR-2F BWROTP 0f BWOTP 1f
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SendCommand(0x61); //tres
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SendData(0x03); //source 800
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SendData(0x20);
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SendData(0x01); //gate 480
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SendData(0xE0);
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SendCommand(0X15);
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SendData(0x00);
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SendCommand(0X50); //VCOM AND DATA INTERVAL SETTING
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SendData(0x11);
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SendData(0x07);
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SendCommand(0X60); //TCON SETTING
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SendData(0x22);
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SendCommand(0x65); // Resolution setting
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SendData(0x00);
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SendData(0x00);//800*480
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SendData(0x00);
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SendData(0x00);
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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 HIGH
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*/
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void Epd::WaitUntilIdle(void) {
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unsigned char busy;
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do {
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SendCommand(0x71);
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busy = DigitalRead(busy_pin);
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busy =!(busy & 0x01);
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}while(busy);
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DelayMs(200);
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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(200);
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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(200);
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}
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void Epd::Displaypart(const unsigned char* pbuffer, unsigned long xStart, unsigned long yStart,\
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unsigned long Picture_Width, unsigned long Picture_Height, unsigned char Block) {
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if(Block == 0){
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SendCommand(0x10);
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}else if(Block == 1){
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SendCommand(0x13);
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}
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for (unsigned long j = 0; j < height; j++) {
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for (unsigned long i = 0; i < width/8; i++) {
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if( (j>=yStart) && (j<yStart+Picture_Height) && (i*8>=xStart) && (i*8<xStart+Picture_Width)){
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if(Block == 0){
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SendData((pgm_read_byte(&(pbuffer[i-xStart/8 + (Picture_Width)/8*(j-yStart)]))) );
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}else{
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SendData(~(pgm_read_byte(&(pbuffer[i-xStart/8 + (Picture_Width)/8*(j-yStart)]))) );
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}
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}else {
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if(Block == 0){
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SendData(0xff);
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}else {
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SendData(0x00);
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}
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}
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}
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}
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if(Block == 1){
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SendCommand(0x12);
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DelayMs(100);
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WaitUntilIdle();
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}
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}
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/**
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* @brief: After this command is transmitted, the chip would enter the
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* deep-sleep mode to save power.
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* The deep sleep mode would return to standby by hardware reset.
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* The only one parameter is a check code, the command would be
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* executed if check code = 0xA5.
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* You can use EPD_Reset() to awaken
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*/
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void Epd::Sleep(void) {
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SendCommand(0X02);
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WaitUntilIdle();
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SendCommand(0X07);
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SendData(0xa5);
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}
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/* END OF FILE */
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