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2020-12-10

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hnwangkg-ezio 2020-12-11 14:36:30 +08:00
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Arduino/epd2in9b_V2/epd2in9b_V2.cpp
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/**
* @filename : epd2in9b_V2.cpp
* @brief : Implements for e-paper library
* @author : Waveshare
*
* Copyright (C) Waveshare July 3 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 "epd2in9b_V2.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 / 8;
height = EPD_HEIGHT;
};
int Epd::Init(void) {
if (IfInit() != 0) {
return -1;
}
Reset();
SendCommand(0x04);//power on
WaitUntilIdle();//waiting for the electronic paper IC to release the idle signal
SendCommand(0x00);//panel setting
SendData(0x0f);//default data
SendData(0x89);//128x296,Temperature sensor, boost and other related timing settings
SendCommand(0x61);//Display resolution setting
SendData (0x80);
SendData (0x01);
SendData (0x28);
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) {
unsigned char busy;
Serial.print("e-Paper busy \r\n ");
do
{
SendCommand(0x71);
busy = DigitalRead(busy_pin);
busy =!(busy & 0x01);
}
while(busy);
Serial.print("e-Paper busy release \r\n ");
DelayMs(200);
}
/**
* @brief: module reset.
* often used to awaken the module in deep sleep,
* see Epd::Sleep();
*/
void Epd::Reset(void) {
DigitalWrite(reset_pin, LOW); //module reset
DelayMs(10);
DigitalWrite(reset_pin, HIGH);
DelayMs(200);
}
void Epd::DisplayFrame(const UBYTE *blackimage, const UBYTE *ryimage) {
SendCommand(0x10);
for (UWORD j = 0; j < height; j++) {
for (UWORD i = 0; i < width; i++) {
SendData(pgm_read_byte(&blackimage[i + (j*width)]));
}
}
SendCommand(0x92);
SendCommand(0x13);
for (UWORD j = 0; j < height; j++) {
for (UWORD i = 0; i < width; i++) {
SendData(pgm_read_byte(&ryimage[i + (j*width)]));
}
}
SendCommand(0x92);
SendCommand(0x12);
WaitUntilIdle();
}
void Epd::Clear(void) {
//send black data
SendCommand(0x10);
for (UWORD j = 0; j < height; j++) {
for (UWORD i = 0; i < width; i++) {
SendData(0xff);
}
}
//send red data
SendCommand(0x13);
for (UWORD j = 0; j < height; j++) {
for (UWORD i = 0; i < width; i++) {
SendData(0xff);
}
}
SendCommand(0x12);
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
* You can use EPD_Reset() to awaken
*/
void Epd::Sleep(void) {
SendCommand(0x02); // POWER_OFF
WaitUntilIdle();
SendCommand(0x07); // DEEP_SLEEP
SendData(0xA5); // check code
}
/* END OF FILE */