137 lines
3.3 KiB
C++
137 lines
3.3 KiB
C++
/**
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* @filename : epdif.cpp
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* @brief : Implements EPD interface functions
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* Users have to implement all the functions in epdif.cpp
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* @author : Yehui from Waveshare
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*
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* Copyright (C) Waveshare August 10 2017
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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 "epdif.h"
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#include <SPI.h>
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EpdIf::EpdIf() {
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};
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EpdIf::~EpdIf() {
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};
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void EpdIf::DigitalWrite(int pin, int value) {
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digitalWrite(pin, value);
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}
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int EpdIf::DigitalRead(int pin) {
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return digitalRead(pin);
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}
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void EpdIf::DelayMs(unsigned int delaytime) {
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delay(delaytime);
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}
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void EpdIf::SpiTransfer(unsigned char data) {
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digitalWrite(CS_PIN, LOW);
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SPI.transfer(data);
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digitalWrite(CS_PIN, HIGH);
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}
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void EpdIf::EPD_GPIO_Init()
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{
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SPI.end();
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}
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void EpdIf::EPD_SPI_Init()
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{
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SPI.begin();
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SPI.beginTransaction(SPISettings(2000000, MSBFIRST, SPI_MODE0));
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}
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void EpdIf::EPD_Mode(int pin, char mode) {
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if(mode == 0)
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pinMode(pin, INPUT);
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else
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pinMode(pin, OUTPUT);
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}
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void EpdIf::EPD_SendData(unsigned char data) {
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unsigned char i,j=data;
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EPD_Mode(MOSI_PIN, 1);
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EPD_Mode(SCLK_PIN, 1);
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digitalWrite(CS_PIN, 0);
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for(i = 0; i<8; i++)
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{
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digitalWrite(SCLK_PIN, 0);
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if (j & 0x80)
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{
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digitalWrite(MOSI_PIN, 1);
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}
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else
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{
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digitalWrite(MOSI_PIN, 0);
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}
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digitalWrite(SCLK_PIN, 1);
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j = j << 1;
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// DelayMs(1);
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}
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digitalWrite(SCLK_PIN, 0);
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digitalWrite(CS_PIN, 1);
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}
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unsigned char EpdIf::EPD_ReadData()
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{
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unsigned char i,j=0xff;
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EPD_Mode(MOSI_PIN, 0);
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EPD_Mode(SCLK_PIN, 1);
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digitalWrite(CS_PIN, 0);
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for(i = 0; i<8; i++)
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{
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digitalWrite(SCLK_PIN, 0);
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j = j << 1;
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if (DigitalRead(MOSI_PIN))
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{
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j = j | 0x01;
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}
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else
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{
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j= j & 0xfe;
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}
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digitalWrite(SCLK_PIN, 1);
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}
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digitalWrite(SCLK_PIN, 0);
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digitalWrite(CS_PIN, 1);
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return j;
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}
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int EpdIf::IfInit(void) {
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pinMode(CS_PIN, OUTPUT);
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pinMode(RST_PIN, OUTPUT);
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pinMode(DC_PIN, OUTPUT);
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pinMode(BUSY_PIN, INPUT);
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pinMode(PWR_PIN, OUTPUT);
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DigitalWrite(PWR_PIN, 1);
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SPI.begin();
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SPI.beginTransaction(SPISettings(2000000, MSBFIRST, SPI_MODE0));
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return 0;
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}
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