e-paper-display/bcm2835-1.71/e-Paper/Arduino/epd2in13b_V3/epd2in13b_V3.cpp

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/**
* @filename : epd2in9b.cpp
* @brief : Implements for Dual-color 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 "epd2in13b_V3.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();
SendCommand(0x04);
WaitUntilIdle();//waiting for the electronic paper IC to release the idle signal
SendCommand(0x00);//panel setting
SendData(0x0f);//LUT from OTP128x296
SendData(0x89);//Temperature sensor, boost and other related timing settings
SendCommand(0x61);//resolution setting
SendData (0x68);
SendData (0x00);
SendData (0xD4);
SendCommand(0X50);//VCOM AND DATA INTERVAL SETTING
SendData(0x77);//WBmode:VBDF 17|D7 VBDW 97 VBDB 57
//WBRmode:VBDF F7 VBDW 77 VBDB 37 VBDR B7;
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) {
SendCommand(0x71);
while(DigitalRead(busy_pin) == 0) { //0: busy, 1: idle
SendCommand(0x71);
DelayMs(50);
}
DelayMs(200);
}
/**
* @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);
DelayMs(10);
DigitalWrite(reset_pin, HIGH);
DelayMs(200);
this->count = 0;
}
/**
* @brief: refresh and displays the frame
*/
void Epd::DisplayFrame(const unsigned char* frame_buffer_black, const unsigned char* frame_buffer_red) {
if (frame_buffer_black != NULL) {
SendCommand(0x10);
for (int i = 0; i < this->width * this->height / 8; i++) {
SendData(pgm_read_byte(&frame_buffer_black[i]));
}
DelayMs(2);
}
if (frame_buffer_red != NULL) {
SendCommand(0x13);
for (int i = 0; i < this->width * this->height / 8; i++) {
SendData(pgm_read_byte(&frame_buffer_red[i]));
}
}
SendCommand(0x12);
DelayMs(100);
WaitUntilIdle();
this->count = 0;
}
void Epd::Display(const unsigned char* frame_buffer) {
// 1378
if(this->count == 0){
SendCommand(0x10);
this->count++;
}else if(this->count > 0 && this->count < 4 ){
this->count++;
}else if(this->count == 4){
SendCommand(0x13);
this->count++;
}else if(this->count > 4 && this->count < 8 ){
this->count++;
}
for(int i = 0; i < this->width * this->height / 8 / 4; i++){
SendData(frame_buffer[i]);
}
if(this->count == 8){
SendCommand(0x12);
DelayMs(100);
WaitUntilIdle();
this->count = 0;
}
}
/**
* @brief: clear the frame data from the SRAM, this won't refresh the display
*/
void Epd::ClearFrame(void) {
SendCommand(0x10);
for(int i = 0; i < width * height / 8; i++) {
SendData(0xFF);
}
DelayMs(2);
SendCommand(0x13);
for(int i = 0; i < width * height / 8; i++) {
SendData(0xFF);
}
SendCommand(0x12);
DelayMs(100);
WaitUntilIdle();
this->count = 0;
}
/**
* @brief: This displays the frame data from SRAM
*/
void Epd::DisplayFrame(void) {
this->count = 0;
SendCommand(0x12);
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 and use Epd::Init() to initialize.
*/
void Epd::Sleep() {
SendCommand(0X50);
SendData(0xf7);
SendCommand(0X02);//power off
WaitUntilIdle();//waiting for the electronic paper IC to release the idle signal
SendCommand(0X07);//deep sleep
SendData(0xA5);
this->count = 0;
}
/* END OF FILE */