/***************************************************************************** * | 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" #include "Debug.h" static const unsigned char EPD_4IN2_lut_vcom0[] = { 0x00, 0x17, 0x00, 0x00, 0x00, 0x02, 0x00, 0x17, 0x17, 0x00, 0x00, 0x02, 0x00, 0x0A, 0x01, 0x00, 0x00, 0x01, 0x00, 0x0E, 0x0E, 0x00, 0x00, 0x02, 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[] = { 0x40, 0x17, 0x00, 0x00, 0x00, 0x02, 0x90, 0x17, 0x17, 0x00, 0x00, 0x02, 0x40, 0x0A, 0x01, 0x00, 0x00, 0x01, 0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02, 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[] = { 0x40, 0x17, 0x00, 0x00, 0x00, 0x02, 0x90, 0x17, 0x17, 0x00, 0x00, 0x02, 0x40, 0x0A, 0x01, 0x00, 0x00, 0x01, 0xA0, 0x0E, 0x0E, 0x00, 0x00, 0x02, 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[] = { 0x80, 0x17, 0x00, 0x00, 0x00, 0x02, 0x90, 0x17, 0x17, 0x00, 0x00, 0x02, 0x80, 0x0A, 0x01, 0x00, 0x00, 0x01, 0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02, 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[] = { 0x80, 0x17, 0x00, 0x00, 0x00, 0x02, 0x90, 0x17, 0x17, 0x00, 0x00, 0x02, 0x80, 0x0A, 0x01, 0x00, 0x00, 0x01, 0x50, 0x0E, 0x0E, 0x00, 0x00, 0x02, 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(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_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 ******************************************************************************/ static 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) { Debug("e-Paper busy\r\n"); while(DEV_Digital_Read(EPD_BUSY_PIN) == 0) { //LOW: idle, HIGH: busy DEV_Delay_ms(100); } Debug("e-Paper busy release\r\n"); } /****************************************************************************** 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) { UWORD count; EPD_4IN2_SendCommand(0x20); //g vcom for(count=0; count<44; count++) { EPD_4IN2_SendData(EPD_4IN2_lut_vcom0[count]); } EPD_4IN2_SendCommand(0x21); for(count=0; count<42; count++) { EPD_4IN2_SendData(EPD_4IN2_lut_ww[count]); } EPD_4IN2_SendCommand(0x22); for(count=0; count<42; count++) { EPD_4IN2_SendData(EPD_4IN2_lut_bw[count]); } EPD_4IN2_SendCommand(0x23); for(count=0; count<42; count++) { EPD_4IN2_SendData(EPD_4IN2_lut_wb[count]); } EPD_4IN2_SendCommand(0x24); for(count=0; count<42; count++) { EPD_4IN2_SendData(EPD_4IN2_lut_bb[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); // POWER_ON EPD_4IN2_ReadBusy(); EPD_4IN2_SendCommand(0x00); // panel setting EPD_4IN2_SendData(0xbf); // KW-BF KWR-AF BWROTP 0f BWOTP 1f EPD_4IN2_SendData(0x0d); EPD_4IN2_SendCommand(0x30); // PLL setting 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); //128 EPD_4IN2_SendData(0x01); // EPD_4IN2_SendData(0x2c); EPD_4IN2_SendCommand(0x82); // vcom_DC setting EPD_4IN2_SendData(0x28); EPD_4IN2_SendCommand(0X50); // VCOM AND DATA INTERVAL SETTING EPD_4IN2_SendData(0x97); // 97white border 77black border VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7 EPD_4IN2_SetLut(); } /****************************************************************************** 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(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(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 : Enter sleep mode parameter: ******************************************************************************/ void EPD_4IN2_Sleep(void) { EPD_4IN2_SendCommand(0x02); // POWER_OFF EPD_4IN2_ReadBusy(); EPD_4IN2_SendCommand(0x07); // DEEP_SLEEP EPD_4IN2_SendData(0XA5); }