/***************************************************************************** * | File : EPD_2in7b.c * | Author : Waveshare team * | Function : Electronic paper driver * | Info : *---------------- * | This version: V2.0 * | Date : 2018-11-06 * | Info : * 1.Remove:ImageBuff[EPD_HEIGHT * EPD_WIDTH / 8] * 2.Change:EPD_Display(UBYTE *Image) * Need to pass parameters: pointer to cached data * 3.Change: * EPD_RST -> EPD_RST_PIN * EPD_DC -> EPD_DC_PIN * EPD_CS -> EPD_CS_PIN * EPD_BUSY -> EPD_BUSY_PIN # # 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 "EPD_2in7b.h" #include "Debug.h" const unsigned char lut_vcom_dc[] = { 0x00, 0x00, 0x00, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01 }; //R21H const unsigned char lut_ww[] = { 0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01 }; //R22H r const unsigned char lut_bw[] = { 0xA0, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x00, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x90, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0xB0, 0x04, 0x10, 0x00, 0x00, 0x05, 0xB0, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0xC0, 0x23, 0x00, 0x00, 0x00, 0x01 }; //R23H w const unsigned char lut_bb[] = { 0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x40, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x80, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01 }; //R24H b const unsigned char lut_wb[] = { 0x90, 0x1A, 0x1A, 0x00, 0x00, 0x01, 0x20, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x84, 0x0E, 0x01, 0x0E, 0x01, 0x10, 0x10, 0x0A, 0x0A, 0x00, 0x00, 0x08, 0x00, 0x04, 0x10, 0x00, 0x00, 0x05, 0x00, 0x03, 0x0E, 0x00, 0x00, 0x0A, 0x00, 0x23, 0x00, 0x00, 0x00, 0x01 }; /****************************************************************************** function : Software reset parameter: ******************************************************************************/ static void EPD_Reset(void) { DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(200); DEV_Digital_Write(EPD_RST_PIN, 0); DEV_Delay_ms(200); DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(200); } /****************************************************************************** function : send command parameter: Reg : Command register ******************************************************************************/ static void EPD_SendCommand(UBYTE Reg) { DEV_Digital_Write(EPD_DC_PIN, 0); DEV_Digital_Write(EPD_CS_PIN, 0); DEV_SPI_WriteByte(Reg); DEV_Digital_Write(EPD_CS_PIN, 1); } /****************************************************************************** function : send data parameter: Data : Write data ******************************************************************************/ static void EPD_SendData(UBYTE Data) { DEV_Digital_Write(EPD_DC_PIN, 1); DEV_Digital_Write(EPD_CS_PIN, 0); DEV_SPI_WriteByte(Data); DEV_Digital_Write(EPD_CS_PIN, 1); } /****************************************************************************** function : Wait until the busy_pin goes LOW parameter: ******************************************************************************/ void EPD_WaitUntilIdle(void) { Debug("e-Paper busy\r\n"); while(DEV_Digital_Read(EPD_BUSY_PIN) == 0) { //0: busy, 1: idle DEV_Delay_ms(100); } Debug("e-Paper busy release\r\n"); } /****************************************************************************** function : set the look-up tables parameter: ******************************************************************************/ static void EPD_SetLut(void) { unsigned int count; EPD_SendCommand(LUT_FOR_VCOM); //vcom for(count = 0; count < 44; count++) { EPD_SendData(lut_vcom_dc[count]); } EPD_SendCommand(LUT_WHITE_TO_WHITE); //ww -- for(count = 0; count < 42; count++) { EPD_SendData(lut_ww[count]); } EPD_SendCommand(LUT_BLACK_TO_WHITE); //bw r for(count = 0; count < 42; count++) { EPD_SendData(lut_bw[count]); } EPD_SendCommand(LUT_WHITE_TO_BLACK); //wb w for(count = 0; count < 42; count++) { EPD_SendData(lut_bb[count]); } EPD_SendCommand(LUT_BLACK_TO_BLACK); //bb b for(count = 0; count < 42; count++) { EPD_SendData(lut_wb[count]); } } /****************************************************************************** function : Initialize the e-Paper register parameter: ******************************************************************************/ UBYTE EPD_Init(void) { EPD_Reset(); EPD_SendCommand(POWER_ON); EPD_WaitUntilIdle(); EPD_SendCommand(PANEL_SETTING); EPD_SendData(0xaf); //KW-BF KWR-AF BWROTP 0f EPD_SendCommand(PLL_CONTROL); EPD_SendData(0x3a); //3A 100HZ 29 150Hz 39 200HZ 31 171HZ EPD_SendCommand(POWER_SETTING); EPD_SendData(0x03); // VDS_EN, VDG_EN EPD_SendData(0x00); // VCOM_HV, VGHL_LV[1], VGHL_LV[0] EPD_SendData(0x2b); // VDH EPD_SendData(0x2b); // VDL EPD_SendData(0x09); // VDHR EPD_SendCommand(BOOSTER_SOFT_START); EPD_SendData(0x07); EPD_SendData(0x07); EPD_SendData(0x17); // Power optimization EPD_SendCommand(0xF8); EPD_SendData(0x60); EPD_SendData(0xA5); // Power optimization EPD_SendCommand(0xF8); EPD_SendData(0x89); EPD_SendData(0xA5); // Power optimization EPD_SendCommand(0xF8); EPD_SendData(0x90); EPD_SendData(0x00); // Power optimization EPD_SendCommand(0xF8); EPD_SendData(0x93); EPD_SendData(0x2A); // Power optimization EPD_SendCommand(0xF8); EPD_SendData(0x73); EPD_SendData(0x41); EPD_SendCommand(VCM_DC_SETTING_REGISTER); EPD_SendData(0x12); EPD_SendCommand(VCOM_AND_DATA_INTERVAL_SETTING); EPD_SendData(0x87); // define by OTP EPD_SetLut(); EPD_SendCommand(PARTIAL_DISPLAY_REFRESH); EPD_SendData(0x00); return 0; } /****************************************************************************** function : Clear screen parameter: ******************************************************************************/ void EPD_Clear(void) { UWORD Width, Height; Width = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1); Height = EPD_HEIGHT; EPD_SendCommand(DATA_START_TRANSMISSION_1); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_SendData(0X00); } } EPD_SendData(DATA_STOP); EPD_SendCommand(DATA_START_TRANSMISSION_2); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_SendData(0X00); } } EPD_SendData(DATA_STOP); EPD_SendCommand(DISPLAY_REFRESH); EPD_WaitUntilIdle(); } /****************************************************************************** function : Sends the image buffer in RAM to e-Paper and displays parameter: ******************************************************************************/ void EPD_Display(UBYTE *Imageblack, UBYTE *Imagered) { UWORD Width, Height; Width = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1); Height = EPD_HEIGHT; EPD_SendCommand(DATA_START_TRANSMISSION_1); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_SendData(~Imageblack[i + j * Width]); } } EPD_SendData(DATA_STOP); EPD_SendCommand(DATA_START_TRANSMISSION_2); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_SendData(~Imagered[i + j * Width]); } } EPD_SendData(DATA_STOP); EPD_SendCommand(DISPLAY_REFRESH); EPD_WaitUntilIdle(); } /****************************************************************************** function : Enter sleep mode parameter: ******************************************************************************/ void EPD_Sleep(void) { EPD_SendCommand(0X50); EPD_SendData(0xf7); EPD_SendCommand(0X02); //power off EPD_SendCommand(0X07); //deep sleep EPD_SendData(0xA5); }