/** * @filename : epd5in83b.cpp * @brief : Implements for 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 #include "epd5in83b.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) { if (IfInit() != 0) { return -1; } Reset(); SendCommand(POWER_SETTING); SendData(0x37); SendData(0x00); SendCommand(PANEL_SETTING); SendData(0xCF); SendData(0x08); SendCommand(BOOSTER_SOFT_START); SendData(0xc7); SendData(0xcc); SendData(0x28); SendCommand(PLL_CONTROL); SendData(0x3A); SendCommand(TEMPERATURE_CALIBRATION); SendData(0x00); SendCommand(VCOM_AND_DATA_INTERVAL_SETTING); SendData(0x77); SendCommand(TCON_SETTING); SendData(0x22); SendCommand(TCON_RESOLUTION); SendData(0x02); //source 600 SendData(0x58); SendData(0x01); //gate 448 SendData(0xC0); SendCommand(VCM_DC_SETTING); SendData(0x20); //decide by LUT file SendCommand(0xe5); //FLASH MODE SendData(0x03); SendCommand(POWER_ON); WaitUntilIdle(); 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) { while(DigitalRead(busy_pin) == 0) { //0: busy, 1: idle DelayMs(100); } } /** * @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(200); DigitalWrite(reset_pin, HIGH); DelayMs(200); } void Epd::DisplayFrame(const unsigned char* image_black, const unsigned char* image_red) { unsigned char Data_Black, Data_Red, Data; unsigned int i, j, k; SendCommand(DATA_START_TRANSMISSION_1); for(i = 0; i < 448; i++) { for(j = 0; j < 600 / 8; i++) { Data_Black = pgm_read_byte(image_black + i*(600 / 8) + k); Data_Red = pgm_read_byte(image_red + i*(600 / 8) + k); k = 0; while (k < 8) { if ((Data_Red & 0x80) == 0x00) { Data = 0x04; //red } else if ((Data_Black & 0x80) == 0x00) { Data = 0x00; //black } else { Data = 0x03; //white } Data = (Data << 4) & 0xFF; Data_Black = (Data_Black << 1) & 0xFF; Data_Red = (Data_Red << 1) & 0xFF; k += 1; if((Data_Red & 0x80) == 0x00) { Data |= 0x04; //red } else if ((Data_Black & 0x80) == 0x00) { Data |= 0x00; //black } else { Data |= 0x03; //white } Data_Black = (Data_Black << 1) & 0xFF; Data_Red = (Data_Red << 1) & 0xFF; SendData(Data); k += 1; } } } SendCommand(DISPLAY_REFRESH); DelayMs(100); WaitUntilIdle(); } void Epd::Clean(void) { SendCommand(DATA_START_TRANSMISSION_1); for (long i = 0; i < 448; i++) { for (long j = 0; j < 600 / 2; j++) { SendData(0x33); } } SendCommand(DISPLAY_REFRESH); DelayMs(100); WaitUntilIdle(); } void Epd::DisplayOneQuarterFrame(const unsigned char* image_black, const unsigned char* image_red) { unsigned char Data_Black, Data_Red, Data; unsigned int j; SendCommand(DATA_START_TRANSMISSION_1); for (long i = 0; i < 224; i++) { for (long k = 0; k < 38; k++) {//38 => 300 / 8 = 37.5 Data_Black = pgm_read_byte(image_black + i*38 + k); Data_Red = pgm_read_byte(image_red + i*38 + k); j = 0; if(k == 37) { while (j < 4) { if ((Data_Red & 0x80) == 0x00) { Data = 0x04; //red } else if ((Data_Black & 0x80) == 0x00) { Data = 0x00; //black } else { Data = 0x03; //white } Data = (Data << 4) & 0xFF; Data_Black = (Data_Black << 1) & 0xFF; Data_Red = (Data_Red << 1) & 0xFF; j += 1; if((Data_Red & 0x80) == 0x00) { Data |= 0x04; //red } else if ((Data_Black & 0x80) == 0x00) { Data |= 0x00; //black } else { Data |= 0x03; //white } Data_Black = (Data_Black << 1) & 0xFF; Data_Red = (Data_Red << 1) & 0xFF; SendData(Data); j += 1; } } else { while (j < 8) { if ((Data_Red & 0x80) == 0x00) { Data = 0x04; //red } else if ((Data_Black & 0x80) == 0x00) { Data = 0x00; //black } else { Data = 0x03; //white } Data = (Data << 4) & 0xFF; Data_Black = (Data_Black << 1) & 0xFF; Data_Red = (Data_Red << 1) & 0xFF; j += 1; if((Data_Red & 0x80) == 0x00) { Data |= 0x04; //red } else if ((Data_Black & 0x80) == 0x00) { Data |= 0x00; //black } else { Data |= 0x03; //white } Data_Black = (Data_Black << 1) & 0xFF; Data_Red = (Data_Red << 1) & 0xFF; SendData(Data); j += 1; } } } for (long k = 0; k < 150; k++) { // 1/4 show white SendData(0x33); } } for (long i = 0; i < 224; i++) { for (long k = 0; k < 150; k++) { // 1/4 show red SendData(0x44); } for (long k = 0; k < 150; k++) { // 1/4 show black SendData(0x00); } } SendCommand(DISPLAY_REFRESH); 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 */ void Epd::Sleep(void) { SendCommand(POWER_OFF); WaitUntilIdle(); SendCommand(DEEP_SLEEP); SendData(0xa5); } /* END OF FILE */