/***************************************************************************** * | File : EPD_4in2.c * | Author : Waveshare team * | Function : 4.2inch e-paper * | Info : *---------------- * | This version: V3.0 * | Date : 2019-06-13 * | Info : * ----------------------------------------------------------------------------- * V3.0(2019-06-13): * 1.Change: * lut_vcomDC[] => EPD_4IN2_lut_vcomDC[] * lut_ww[] => EPD_4IN2_lut_ww[] * lut_bw[] => EPD_4IN2_lut_bw[] * lut_wb[] => EPD_4IN2_lut_wb[] * lut_bb[] => EPD_4IN2_lut_bb[] * EPD_Reset() => EPD_4IN2_Reset() * EPD_SendCommand() => EPD_4IN2_SendCommand() * EPD_SendData() => EPD_4IN2_SendData() * EPD_WaitUntilIdle() => EPD_4IN2_ReadBusy() * EPD_SetFullReg() => EPD_4IN2_SetFullReg() * EPD_SetPartReg() => EPD_4IN2_SetPartReg() * EPD_TurnOnDisplay() => EPD_4IN2_TurnOnDisplay() * EPD_Init() => EPD_4IN2_Init() * EPD_Clear() => EPD_4IN2_Clear() * EPD_Display() => EPD_4IN2_Display() * EPD_Sleep() => EPD_4IN2_Sleep() * 2.remove commands define: * #define PANEL_SETTING 0x00 * #define POWER_SETTING 0x01 * #define POWER_OFF 0x02 * #define POWER_OFF_SEQUENCE_SETTING 0x03 * #define POWER_ON 0x04 * #define POWER_ON_MEASURE 0x05 * #define BOOSTER_SOFT_START 0x06 * #define DEEP_SLEEP 0x07 * #define DATA_START_TRANSMISSION_1 0x10 * #define DATA_STOP 0x11 * #define DISPLAY_REFRESH 0x12 * #define DATA_START_TRANSMISSION_2 0x13 * #define VCOM_LUT 0x20 * #define W2W_LUT 0x21 * #define B2W_LUT 0x22 * #define W2B_LUT 0x23 * #define B2B_LUT 0x24 * #define PLL_CONTROL 0x30 * #define TEMPERATURE_SENSOR_CALIBRATION 0x40 * #define TEMPERATURE_SENSOR_SELECTION 0x41 * #define TEMPERATURE_SENSOR_WRITE 0x42 * #define TEMPERATURE_SENSOR_READ 0x43 * #define VCOM_AND_DATA_INTERVAL_SETTING 0x50 * #define LOW_POWER_DETECTION 0x51 * #define TCON_SETTING 0x60 * #define RESOLUTION_SETTING 0x61 * #define GET_STATUS 0x71 * #define AUTO_MEASURE_VCOM 0x80 * #define READ_VCOM_VALUE 0x81 * #define VCM_DC_SETTING 0x82 * #define PARTIAL_WINDOW 0x90 * #define PARTIAL_IN 0x91 * #define PARTIAL_OUT 0x92 * #define PROGRAM_MODE 0xA0 * #define ACTIVE_PROGRAM 0xA1 * #define READ_OTP_DATA 0xA2 * #define POWER_SAVING 0xE3 * V2.0(2018-10-30): * 1.Remove:ImageBuff[EPD_HEIGHT * EPD_WIDTH / 8] * 2.Change:EPD_Display(UBYTE *Image) * Need to pass parameters: pointer to cached data # # 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_4in2.h" static const unsigned char EPD_4IN2_lut_vcom0[] = { 0x00, 0x08, 0x08, 0x00, 0x00, 0x02, 0x00, 0x0F, 0x0F, 0x00, 0x00, 0x01, 0x00, 0x08, 0x08, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; static const unsigned char EPD_4IN2_lut_ww[] = { 0x50, 0x08, 0x08, 0x00, 0x00, 0x02, 0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01, 0xA0, 0x08, 0x08, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; static const unsigned char EPD_4IN2_lut_bw[] = { 0x50, 0x08, 0x08, 0x00, 0x00, 0x02, 0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01, 0xA0, 0x08, 0x08, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; static const unsigned char EPD_4IN2_lut_wb[] = { 0xA0, 0x08, 0x08, 0x00, 0x00, 0x02, 0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01, 0x50, 0x08, 0x08, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; static const unsigned char EPD_4IN2_lut_bb[] = { 0x20, 0x08, 0x08, 0x00, 0x00, 0x02, 0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01, 0x10, 0x08, 0x08, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; /******************************partial screen update LUT*********************************/ const unsigned char EPD_4IN2_Partial_lut_vcom1[] ={ 0x00, 0x01, 0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; const unsigned char EPD_4IN2_Partial_lut_ww1[] ={ 0x00, 0x01, 0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; const unsigned char EPD_4IN2_Partial_lut_bw1[] ={ 0x20, 0x01, 0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; const unsigned char EPD_4IN2_Partial_lut_wb1[] ={ 0x10, 0x01, 0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }; const unsigned char EPD_4IN2_Partial_lut_bb1[] ={ 0x00, 0x01,0x20, 0x01, 0x00, 0x01, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 0x00, 0x00, }; /******************************gray*********************************/ //0~3 gray const unsigned char EPD_4IN2_4Gray_lut_vcom[] = { 0x00 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01, 0x60 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01, 0x00 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01, 0x00 ,0x13 ,0x0A ,0x01 ,0x00 ,0x01, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 }; //R21 const unsigned char EPD_4IN2_4Gray_lut_ww[] ={ 0x40 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01, 0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01, 0x10 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01, 0xA0 ,0x13 ,0x01 ,0x00 ,0x00 ,0x01, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, }; //R22H r const unsigned char EPD_4IN2_4Gray_lut_bw[] ={ 0x40 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01, 0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01, 0x00 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01, 0x99 ,0x0C ,0x01 ,0x03 ,0x04 ,0x01, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, }; //R23H w const unsigned char EPD_4IN2_4Gray_lut_wb[] ={ 0x40 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01, 0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01, 0x00 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01, 0x99 ,0x0B ,0x04 ,0x04 ,0x01 ,0x01, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, }; //R24H b const unsigned char EPD_4IN2_4Gray_lut_bb[] ={ 0x80 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01, 0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01, 0x20 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01, 0x50 ,0x13 ,0x01 ,0x00 ,0x00 ,0x01, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, 0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00, }; /****************************************************************************** function : Software reset parameter: ******************************************************************************/ static void EPD_4IN2_Reset(void) { DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(10); DEV_Digital_Write(EPD_RST_PIN, 0); DEV_Delay_ms(10); DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(10); DEV_Digital_Write(EPD_RST_PIN, 0); DEV_Delay_ms(10); DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(10); DEV_Digital_Write(EPD_RST_PIN, 0); DEV_Delay_ms(10); DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(10); } /****************************************************************************** function : send command parameter: Reg : Command register ******************************************************************************/ void EPD_4IN2_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 ******************************************************************************/ void EPD_4IN2_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_4IN2_ReadBusy(void) { while(DEV_Digital_Read(EPD_BUSY_PIN) == 0) { //LOW: idle, HIGH: busy DEV_Delay_ms(100); } } /****************************************************************************** function : Turn On Display parameter: ******************************************************************************/ static void EPD_4IN2_TurnOnDisplay(void) { EPD_4IN2_SendCommand(0x12); DEV_Delay_ms(100); EPD_4IN2_ReadBusy(); } /****************************************************************************** function : set the look-up tables parameter: ******************************************************************************/ static void EPD_4IN2_SetLut(void) { unsigned int count; EPD_4IN2_SendCommand(0x20); for(count=0;count<36;count++) {EPD_4IN2_SendData(EPD_4IN2_lut_vcom0[count]);} EPD_4IN2_SendCommand(0x21); for(count=0;count<36;count++) {EPD_4IN2_SendData(EPD_4IN2_lut_ww[count]);} EPD_4IN2_SendCommand(0x22); for(count=0;count<36;count++) {EPD_4IN2_SendData(EPD_4IN2_lut_bw[count]);} EPD_4IN2_SendCommand(0x23); for(count=0;count<36;count++) {EPD_4IN2_SendData(EPD_4IN2_lut_wb[count]);} EPD_4IN2_SendCommand(0x24); for(count=0;count<36;count++) {EPD_4IN2_SendData(EPD_4IN2_lut_bb[count]);} } static void EPD_4IN2_Partial_SetLut(void) { unsigned int count; EPD_4IN2_SendCommand(0x20); for(count=0;count<44;count++) {EPD_4IN2_SendData(EPD_4IN2_Partial_lut_vcom1[count]);} EPD_4IN2_SendCommand(0x21); for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_Partial_lut_ww1[count]);} EPD_4IN2_SendCommand(0x22); for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_Partial_lut_bw1[count]);} EPD_4IN2_SendCommand(0x23); for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_Partial_lut_wb1[count]);} EPD_4IN2_SendCommand(0x24); for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_Partial_lut_bb1[count]);} } //LUT download static void EPD_4IN2_4Gray_lut(void) { unsigned int count; { EPD_4IN2_SendCommand(0x20); //vcom for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_4Gray_lut_vcom[count]);} EPD_4IN2_SendCommand(0x21); //red not use for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_4Gray_lut_ww[count]);} EPD_4IN2_SendCommand(0x22); //bw r for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_4Gray_lut_bw[count]);} EPD_4IN2_SendCommand(0x23); //wb w for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_4Gray_lut_wb[count]);} EPD_4IN2_SendCommand(0x24); //bb b for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_4Gray_lut_bb[count]);} EPD_4IN2_SendCommand(0x25); //vcom for(count=0;count<42;count++) {EPD_4IN2_SendData(EPD_4IN2_4Gray_lut_ww[count]);} } } /****************************************************************************** function : Initialize the e-Paper register parameter: ******************************************************************************/ void EPD_4IN2_Init(void) { EPD_4IN2_Reset(); EPD_4IN2_SendCommand(0x01); //POWER SETTING EPD_4IN2_SendData (0x03); EPD_4IN2_SendData (0x00); EPD_4IN2_SendData (0x2b); EPD_4IN2_SendData (0x2b); EPD_4IN2_SendCommand(0x06); //boost soft start EPD_4IN2_SendData (0x17); //A EPD_4IN2_SendData (0x17); //B EPD_4IN2_SendData (0x17); //C EPD_4IN2_SendCommand(0x04); EPD_4IN2_ReadBusy(); EPD_4IN2_SendCommand(0x00); //panel setting EPD_4IN2_SendData(0xbf); //KW-bf KWR-2F BWROTP 0f BWOTP 1f EPD_4IN2_SendCommand(0x30); EPD_4IN2_SendData (0x3c); // 3A 100HZ 29 150Hz 39 200HZ 31 171HZ EPD_4IN2_SendCommand(0x61); //resolution setting EPD_4IN2_SendData (0x01); EPD_4IN2_SendData (0x90); //400 EPD_4IN2_SendData (0x01); //300 EPD_4IN2_SendData (0x2c); EPD_4IN2_SendCommand(0x82); //vcom_DC setting EPD_4IN2_SendData (0x12); EPD_4IN2_SendCommand(0X50); EPD_4IN2_SendData(0x97); EPD_4IN2_SetLut(); } void EPD_4IN2_Init_4Gray(void) { EPD_4IN2_Reset(); EPD_4IN2_SendCommand(0x01); //POWER SETTING EPD_4IN2_SendData (0x03); EPD_4IN2_SendData (0x00); //VGH=20V,VGL=-20V EPD_4IN2_SendData (0x2b); //VDH=15V EPD_4IN2_SendData (0x2b); //VDL=-15V EPD_4IN2_SendData (0x13); EPD_4IN2_SendCommand(0x06); //booster soft start EPD_4IN2_SendData (0x17); //A EPD_4IN2_SendData (0x17); //B EPD_4IN2_SendData (0x17); //C EPD_4IN2_SendCommand(0x04); EPD_4IN2_ReadBusy(); EPD_4IN2_SendCommand(0x00); //panel setting EPD_4IN2_SendData(0x3f); //KW-3f KWR-2F BWROTP 0f BWOTP 1f EPD_4IN2_SendCommand(0x30); //PLL setting EPD_4IN2_SendData (0x3c); //100hz EPD_4IN2_SendCommand(0x61); //resolution setting EPD_4IN2_SendData (0x01); //400 EPD_4IN2_SendData (0x90); EPD_4IN2_SendData (0x01); //300 EPD_4IN2_SendData (0x2c); EPD_4IN2_SendCommand(0x82); //vcom_DC setting EPD_4IN2_SendData (0x12); EPD_4IN2_SendCommand(0X50); //VCOM AND DATA INTERVAL SETTING EPD_4IN2_SendData(0x97); } /****************************************************************************** function : Clear screen parameter: ******************************************************************************/ void EPD_4IN2_Clear(void) { UWORD Width, Height; Width = (EPD_4IN2_WIDTH % 8 == 0)? (EPD_4IN2_WIDTH / 8 ): (EPD_4IN2_WIDTH / 8 + 1); Height = EPD_4IN2_HEIGHT; EPD_4IN2_SendCommand(0x92); EPD_4IN2_SetLut(); EPD_4IN2_SendCommand(0x10); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2_SendData(0xFF); } } EPD_4IN2_SendCommand(0x13); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2_SendData(0xFF); } } EPD_4IN2_TurnOnDisplay(); } /****************************************************************************** function : Sends the image buffer in RAM to e-Paper and displays parameter: ******************************************************************************/ void EPD_4IN2_Display(UBYTE *Image) { UWORD Width, Height; Width = (EPD_4IN2_WIDTH % 8 == 0)? (EPD_4IN2_WIDTH / 8 ): (EPD_4IN2_WIDTH / 8 + 1); Height = EPD_4IN2_HEIGHT; EPD_4IN2_SendCommand(0x92); EPD_4IN2_SetLut(); EPD_4IN2_SendCommand(0x13); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2_SendData(Image[i + j * Width]); } } EPD_4IN2_TurnOnDisplay(); } /****************************************************************************** function : Sends the image buffer in RAM to e-Paper and displays parameter: ******************************************************************************/ void EPD_4IN2_Display_Half(UBYTE *Image, UBYTE Region) { UWORD Width, Height; Width = (EPD_4IN2_WIDTH % 8 == 0)? (EPD_4IN2_WIDTH / 8 ): (EPD_4IN2_WIDTH / 8 + 1); Height = EPD_4IN2_HEIGHT; if(Region == 1){ EPD_4IN2_SendCommand(0x13); for (UWORD j = 0; j < Height/2; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2_SendData(Image[i + j * Width]); } } }else if(Region == 2){ for (UWORD j = 0; j < Height/2; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2_SendData(Image[i + j * Width]); } } } } /****************************************************************************** function : Sends the image buffer in RAM to e-Paper and displays parameter: ******************************************************************************/ void EPD_4IN2_UpdateDisplay(void) { EPD_4IN2_TurnOnDisplay(); } /****************************************************************************** function : Enter sleep mode parameter: ******************************************************************************/ void EPD_4IN2_Sleep(void) { EPD_4IN2_SendCommand(0x50); // DEEP_SLEEP EPD_4IN2_SendData(0XF7); EPD_4IN2_SendCommand(0x02); // POWER_OFF EPD_4IN2_ReadBusy(); EPD_4IN2_SendCommand(0x07); // DEEP_SLEEP EPD_4IN2_SendData(0XA5); }