/** * @filename : epd4in2_V2.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 #include "epd4in2_V2.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(); ReadBusy(); SendCommand(0x12); ReadBusy(); SendCommand(0x21); SendData(0x40); SendData(0x00); SendCommand(0x3C); SendData(0x05); SendCommand(0x11); SendData(0x03); SendCommand(0x44); SendData(0x00); SendData(0x31); SendCommand(0x45); SendData(0x00); SendData(0x00); SendData(0x2B); SendData(0x01); SendCommand(0x4E); SendData(0x00); SendCommand(0x4F); SendData(0x00); SendData(0x00); ReadBusy(); /* EPD hardware init end */ return 0; } int Epd::Init_Fast(char mode) { /* this calls the peripheral hardware interface, see epdif */ if (IfInit() != 0) { return -1; } /* EPD hardware init start */ Reset(); ReadBusy(); SendCommand(0x12); ReadBusy(); SendCommand(0x21); SendData(0x40); SendData(0x00); SendCommand(0x3C); SendData(0x05); if(mode == Seconds_1_5S) { SendCommand(0x1A); SendData(0x6E); } else { SendCommand(0x1A); SendData(0x5A); } SendCommand(0x22); SendData(0x91); SendCommand(0x20); ReadBusy(); SendCommand(0x11); SendData(0x03); SendCommand(0x44); SendData(0x00); SendData(0x31); SendCommand(0x45); SendData(0x00); SendData(0x00); SendData(0x2B); SendData(0x01); SendCommand(0x4E); SendData(0x00); SendCommand(0x4F); SendData(0x00); SendData(0x00); ReadBusy(); /* EPD hardware init end */ return 0; } void Epd::Lut(void){ SendCommand(0x32); for(int i=0; i<227; i++) SendData(LUT_ALL[i]); SendCommand(0x3F); SendData(LUT_ALL[227]); SendCommand(0x03); SendData(LUT_ALL[228]); SendCommand(0x04); SendData(LUT_ALL[229]); SendData(LUT_ALL[230]); SendData(LUT_ALL[231]); SendCommand(0x2c); SendData(LUT_ALL[232]); } int Epd::Init_4Gray(void) { /* this calls the peripheral hardware interface, see epdif */ if (IfInit() != 0) { return -1; } /* EPD hardware init start */ Reset(); ReadBusy(); SendCommand(0x12); ReadBusy(); SendCommand(0x21); SendData(0x00); SendData(0x00); SendCommand(0x3C); SendData(0x03); SendCommand(0x0C); SendData(0x8B); SendData(0x9C); SendData(0xA4); SendData(0x0F); Lut(); SendCommand(0x11); SendData(0x03); SendCommand(0x44); SendData(0x00); SendData(0x31); SendCommand(0x45); SendData(0x00); SendData(0x00); SendData(0x2B); SendData(0x01); SendCommand(0x4E); SendData(0x00); SendCommand(0x4F); SendData(0x00); SendData(0x00); ReadBusy(); } /** * @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::ReadBusy(void) { while(DigitalRead(busy_pin) == 1) { //1: busy, 0: idle // Wait } } /** * @brief: module reset. * often used to awaken the module in deep sleep, * see Epd::Sleep(); */ void Epd::Reset(void) { DigitalWrite(reset_pin, HIGH); DelayMs(100); DigitalWrite(reset_pin, LOW); DelayMs(2); DigitalWrite(reset_pin, HIGH); DelayMs(100); } /** * @brief: Turn On Display */ void Epd::TurnOnDisplay(void) { SendCommand(0x22); SendData(0xF7); SendCommand(0x20); ReadBusy(); } void Epd::TurnOnDisplay_Fast(void) { SendCommand(0x22); SendData(0xC7); SendCommand(0x20); ReadBusy(); } void Epd::TurnOnDisplay_Partial(void) { SendCommand(0x22); SendData(0xFF); SendCommand(0x20); ReadBusy(); } void Epd::TurnOnDisplay_4Gray(void) { SendCommand(0x22); SendData(0xCF); SendCommand(0x20); ReadBusy(); } /****************************************************************************** function : Sends the image buffer in RAM to e-Paper and displays parameter: ******************************************************************************/ void Epd::Clear(void) { unsigned int Width, Height; Width = (width % 8 == 0)? (width / 8 ): (width / 8 + 1); Height = height; SendCommand(0x24); for (unsigned int j = 0; j < Height; j++) { for (unsigned int i = 0; i < Width; i++) { SendData(0xff); } } SendCommand(0x26); for (unsigned int j = 0; j < Height; j++) { for (unsigned int i = 0; i < Width; i++) { SendData(0xff); } } TurnOnDisplay(); } void Epd::Display(const unsigned char* Image) { unsigned int Width, Height; Width = (width % 8 == 0)? (width / 8 ): (width / 8 + 1); Height = height; SendCommand(0x24); for (unsigned int j = 0; j < Height; j++) { for (unsigned int i = 0; i < Width; i++) { SendData(pgm_read_byte(&Image[i + j * Width])); } } SendCommand(0x26); for (unsigned int j = 0; j < Height; j++) { for (unsigned int i = 0; i < Width; i++) { SendData(pgm_read_byte(&Image[i + j * Width])); } } TurnOnDisplay(); } void Epd::Display_Fast(const unsigned char* Image) { unsigned int Width, Height; Width = (width % 8 == 0)? (width / 8 ): (width / 8 + 1); Height = height; SendCommand(0x24); for (unsigned int j = 0; j < Height; j++) { for (unsigned int i = 0; i < Width; i++) { SendData(pgm_read_byte(&Image[i + j * Width])); } } SendCommand(0x26); for (unsigned int j = 0; j < Height; j++) { for (unsigned int i = 0; i < Width; i++) { SendData(pgm_read_byte(&Image[i + j * Width])); } } TurnOnDisplay_Fast(); } void Epd::Display_Base(const unsigned char* Image) { unsigned int Width, Height; Width = (width % 8 == 0)? (width / 8 ): (width / 8 + 1); Height = height; SendCommand(0x24); //Write Black and White image to RAM for (unsigned int j = 0; j < Height; j++) { for (unsigned int i = 0; i < Width; i++) { SendData(pgm_read_byte(&Image[i + j * Width])); } } SendCommand(0x26); //Write Black and White image to RAM for (unsigned int j = 0; j < Height; j++) { for (unsigned int i = 0; i < Width; i++) { SendData(pgm_read_byte(&Image[i + j * Width])); } } TurnOnDisplay(); } void Epd::Display_Partial(unsigned char* Image, unsigned int Xstart, unsigned int Ystart, unsigned int Xend, unsigned int Yend) { unsigned int i, Width; unsigned int IMAGE_COUNTER; if((Xstart % 8 + Xend % 8 == 8 && Xstart % 8 > Xend % 8) || Xstart % 8 + Xend % 8 == 0 || (Xend - Xstart)%8 == 0) { Xstart = Xstart / 8 ; Xend = Xend / 8; } else { Xstart = Xstart / 8 ; Xend = Xend % 8 == 0 ? Xend / 8 : Xend / 8 + 1; } Width = Xend - Xstart; IMAGE_COUNTER = Width * (Yend-Ystart); Serial.println(IMAGE_COUNTER); Xend -= 1; Yend -= 1; //Reset Reset(); SendCommand(0x3C); //BorderWavefrom SendData(0x80); SendCommand(0x21); SendData(0x00); SendData(0x00); SendCommand(0x3C); SendData(0x80); // SendCommand(0x44); // set RAM x address start/end, in page 35 SendData(Xstart & 0xff); // RAM x address start at 00h; SendData(Xend & 0xff); // RAM x address end at 0fh(15+1)*8->128 SendCommand(0x45); // set RAM y address start/end, in page 35 SendData(Ystart & 0xff); // RAM y address start at 0127h; SendData((Ystart>>8) & 0x01); // RAM y address start at 0127h; SendData(Yend & 0xff); // RAM y address end at 00h; SendData((Yend>>8) & 0x01); SendCommand(0x4E); // set RAM x address count to 0; SendData(Xstart & 0xff); SendCommand(0x4F); // set RAM y address count to 0X127; SendData(Ystart & 0xff); SendData((Ystart>>8) & 0x01); SendCommand(0x24); //Write Black and White image to RAM for (i = 0; i < IMAGE_COUNTER; i++) { SendData(Image[i]); } TurnOnDisplay_Partial(); } void Epd::Display_Partial_Not_refresh(unsigned char* Image, unsigned int Xstart, unsigned int Ystart, unsigned int Xend, unsigned int Yend) { unsigned int i, Width; unsigned int IMAGE_COUNTER; if((Xstart % 8 + Xend % 8 == 8 && Xstart % 8 > Xend % 8) || Xstart % 8 + Xend % 8 == 0 || (Xend - Xstart)%8 == 0) { Xstart = Xstart / 8 ; Xend = Xend / 8; } else { Xstart = Xstart / 8 ; Xend = Xend % 8 == 0 ? Xend / 8 : Xend / 8 + 1; } Width = Xend - Xstart; IMAGE_COUNTER = Width * (Yend-Ystart); Serial.println(IMAGE_COUNTER); Xend -= 1; Yend -= 1; //Reset Reset(); SendCommand(0x3C); //BorderWavefrom SendData(0x80); SendCommand(0x21); SendData(0x00); SendData(0x00); SendCommand(0x3C); SendData(0x80); // SendCommand(0x44); // set RAM x address start/end, in page 35 SendData(Xstart & 0xff); // RAM x address start at 00h; SendData(Xend & 0xff); // RAM x address end at 0fh(15+1)*8->128 SendCommand(0x45); // set RAM y address start/end, in page 35 SendData(Ystart & 0xff); // RAM y address start at 0127h; SendData((Ystart>>8) & 0x01); // RAM y address start at 0127h; SendData(Yend & 0xff); // RAM y address end at 00h; SendData((Yend>>8) & 0x01); SendCommand(0x4E); // set RAM x address count to 0; SendData(Xstart & 0xff); SendCommand(0x4F); // set RAM y address count to 0X127; SendData(Ystart & 0xff); SendData((Ystart>>8) & 0x01); SendCommand(0x24); //Write Black and White image to RAM for (i = 0; i < IMAGE_COUNTER; i++) { SendData(Image[i]); } // TurnOnDisplay_Partial(); } void Epd::Set_4GrayDisplay(const char *Image, int x, int y, int w, int l) { int i,j,k,m; int z=0; unsigned char temp1,temp2,temp3; /****Color display description**** white gray1 gray2 black 0x10| 01 01 00 00 0x13| 01 00 01 00 *********************************/ SendCommand(0x24); z=0; x= x/8*8; for(m = 0; m= x/8 && i <(x+w)/8 && m >= y && m < y+l){ temp3=0; for(j=0;j<2;j++) { temp1 = pgm_read_byte(&Image[z*2+j]); for(k=0;k<2;k++) { temp2 = temp1&0xC0 ; if(temp2 == 0xC0) temp3 |= 0x01;//white else if(temp2 == 0x00) temp3 |= 0x00; //black else if(temp2 == 0x80) temp3 |= 0x01; //gray1 else //0x40 temp3 |= 0x00; //gray2 temp3 <<= 1; temp1 <<= 2; temp2 = temp1&0xC0 ; if(temp2 == 0xC0) //white temp3 |= 0x01; else if(temp2 == 0x00) //black temp3 |= 0x00; else if(temp2 == 0x80) temp3 |= 0x01; //gray1 else //0x40 temp3 |= 0x00; //gray2 if(j!=1 || k!=1) temp3 <<= 1; temp1 <<= 2; } } z++; SendData(temp3); }else{ SendData(0xff); } } // new data SendCommand(0x26); z=0; for(m = 0; m= x/8 && i <(x+w)/8 && m >= y && m < y+l){ temp3=0; for(j=0;j<2;j++) { temp1 = pgm_read_byte(&Image[z*2+j]); for(k=0;k<2;k++) { temp2 = temp1&0xC0 ; if(temp2 == 0xC0) temp3 |= 0x01;//white else if(temp2 == 0x00) temp3 |= 0x00; //black else if(temp2 == 0x80) temp3 |= 0x00; //gray1 else //0x40 temp3 |= 0x01; //gray2 temp3 <<= 1; temp1 <<= 2; temp2 = temp1&0xC0 ; if(temp2 == 0xC0) //white temp3 |= 0x01; else if(temp2 == 0x00) //black temp3 |= 0x00; else if(temp2 == 0x80) temp3 |= 0x00; //gray1 else //0x40 temp3 |= 0x01; //gray2 if(j!=1 || k!=1) temp3 <<= 1; temp1 <<= 2; } } z++; SendData(temp3); }else { SendData(0xff); } } TurnOnDisplay_4Gray(); } void Epd::Sleep() { SendCommand(0x10); SendData(0x01); DelayMs(100); } const unsigned char LUT_ALL[233]={ 0x01, 0x0A, 0x1B, 0x0F, 0x03, 0x01, 0x01, 0x05, 0x0A, 0x01, 0x0A, 0x01, 0x01, 0x01, 0x05, 0x08, 0x03, 0x02, 0x04, 0x01, 0x01, 0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x0A, 0x1B, 0x0F, 0x03, 0x01, 0x01, 0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01, 0x05, 0x48, 0x03, 0x82, 0x84, 0x01, 0x01, 0x01, 0x84, 0x84, 0x82, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x0A, 0x1B, 0x8F, 0x03, 0x01, 0x01, 0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01, 0x05, 0x48, 0x83, 0x82, 0x04, 0x01, 0x01, 0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x8A, 0x1B, 0x8F, 0x03, 0x01, 0x01, 0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01, 0x05, 0x48, 0x83, 0x02, 0x04, 0x01, 0x01, 0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x8A, 0x9B, 0x8F, 0x03, 0x01, 0x01, 0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01, 0x05, 0x48, 0x03, 0x42, 0x04, 0x01, 0x01, 0x01, 0x04, 0x04, 0x42, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x07, 0x17, 0x41, 0xA8, 0x32, 0x30, }; /* END OF FILE */