/***************************************************************************** * | File : EPD_4in2b_V2.c * | Author : Waveshare team * | Function : 4.2inch e-paper b V2 * | Info : *---------------- * | This version: V1.0 * | Date : 2020-11-25 * | Info : * ----------------------------------------------------------------------------- # # 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_4in2b_V2_old.h" static uint8_t flag=0; /****************************************************************************** function : Software reset parameter: ******************************************************************************/ static void EPD_4IN2B_V2_Reset(void) { DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(200); DEV_Digital_Write(EPD_RST_PIN, 0); DEV_Delay_ms(2); DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(200); } /****************************************************************************** function : send command parameter: Reg : Command register ******************************************************************************/ static void EPD_4IN2B_V2_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_4IN2B_V2_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_4IN2B_V2_ReadBusy_old_1(void) { Debug("e-Paper busy\r\n"); do{ EPD_4IN2B_V2_SendCommand(0x71); DEV_Delay_ms(20); }while(!(DEV_Digital_Read(EPD_BUSY_PIN))); //0: busy, 1: idle DEV_Delay_ms(20); Debug("e-Paper busy release\r\n"); } void EPD_4IN2B_V2_ReadBusy_new_1(void) { Debug("e-Paper busy\r\n"); while(DEV_Digital_Read(EPD_BUSY_PIN) == 1) { //LOW: idle, HIGH: busy DEV_Delay_ms(10); } Debug("e-Paper busy release\r\n"); } void EPD_4IN2B_V2_ReadBusy_1(void) { if(flag == 0) EPD_4IN2B_V2_ReadBusy_new_1(); else EPD_4IN2B_V2_ReadBusy_old_1(); } /****************************************************************************** function : Setting the display window parameter: ******************************************************************************/ static void EPD_4IN2B_V2_SetWindows(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend) { EPD_4IN2B_V2_SendCommand(0x44); // SET_RAM_X_ADDRESS_START_END_POSITION EPD_4IN2B_V2_SendData((Xstart>>3) & 0xFF); EPD_4IN2B_V2_SendData((Xend>>3) & 0xFF); EPD_4IN2B_V2_SendCommand(0x45); // SET_RAM_Y_ADDRESS_START_END_POSITION EPD_4IN2B_V2_SendData(Ystart & 0xFF); EPD_4IN2B_V2_SendData((Ystart >> 8) & 0xFF); EPD_4IN2B_V2_SendData(Yend & 0xFF); EPD_4IN2B_V2_SendData((Yend >> 8) & 0xFF); } /****************************************************************************** function : Set Cursor parameter: ******************************************************************************/ static void EPD_4IN2B_V2_SetCursor(UWORD Xstart, UWORD Ystart) { EPD_4IN2B_V2_SendCommand(0x4E); // SET_RAM_X_ADDRESS_COUNTER EPD_4IN2B_V2_SendData((Xstart>>3) & 0xFF); EPD_4IN2B_V2_SendCommand(0x4F); // SET_RAM_Y_ADDRESS_COUNTER EPD_4IN2B_V2_SendData(Ystart & 0xFF); EPD_4IN2B_V2_SendData((Ystart >> 8) & 0xFF); } /****************************************************************************** function : Initialize the e-Paper register parameter: ******************************************************************************/ void EPD_4IN2B_V2_Init_old_1(void) { EPD_4IN2B_V2_Reset(); EPD_4IN2B_V2_ReadBusy_1(); EPD_4IN2B_V2_SendCommand(0x04); // soft reset EPD_4IN2B_V2_ReadBusy_1(); EPD_4IN2B_V2_SendCommand(0x00); //BorderWavefrom EPD_4IN2B_V2_SendData(0x0F); } void EPD_4IN2B_V2_Init_new_1(void) { EPD_4IN2B_V2_Reset(); EPD_4IN2B_V2_ReadBusy_1(); EPD_4IN2B_V2_SendCommand(0x12); // soft reset EPD_4IN2B_V2_ReadBusy_1(); // EPD_4IN2B_V2_SendCommand(0x01); //Driver output control // EPD_4IN2B_V2_SendData((EPD_4IN2B_V2_HEIGHT-1)%256); // EPD_4IN2B_V2_SendData((EPD_4IN2B_V2_HEIGHT-1)/256); // EPD_4IN2B_V2_SendData(0x00); EPD_4IN2B_V2_SendCommand(0x3C); //BorderWavefrom EPD_4IN2B_V2_SendData(0x05); EPD_4IN2B_V2_SendCommand(0x18); //Read built-in temperature sensor EPD_4IN2B_V2_SendData(0x80); EPD_4IN2B_V2_SendCommand(0x11); // data entry mode EPD_4IN2B_V2_SendData(0x03); // X-mode EPD_4IN2B_V2_SetWindows(0, 0, EPD_4IN2B_V2_WIDTH-1, EPD_4IN2B_V2_HEIGHT-1); EPD_4IN2B_V2_SetCursor(0, 0); EPD_4IN2B_V2_ReadBusy_1(); } void EPD_4IN2B_V2_Init_1() { uint8_t i=0; EPD_4IN2B_V2_Reset(); DEV_GPIO_Init(); DEV_Digital_Write(EPD_DC_PIN, 0); DEV_SPI_SendByte(0x2F); DEV_Delay_ms(50); DEV_Digital_Write(EPD_DC_PIN, 1); i = DEV_SPI_ReadByte(); printf("%02x\n",i); DEV_SPI_Init(); if(i == 0x01) { flag = 0; EPD_4IN2B_V2_Init_new_1(); } else { flag = 1; EPD_4IN2B_V2_Init_old_1(); } } /****************************************************************************** function : Clear screen parameter: ******************************************************************************/ void EPD_4IN2B_V2_Clear_old_1(void) { UWORD Width, Height; Width = (EPD_4IN2B_V2_WIDTH % 8 == 0)? (EPD_4IN2B_V2_WIDTH / 8 ): (EPD_4IN2B_V2_WIDTH / 8 + 1); Height = EPD_4IN2B_V2_HEIGHT; EPD_4IN2B_V2_SendCommand(0x10); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2B_V2_SendData(0xFF); } } EPD_4IN2B_V2_SendCommand(0x13); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2B_V2_SendData(0xFF); } } EPD_4IN2B_V2_SendCommand(0x12); DEV_Delay_ms(100); EPD_4IN2B_V2_ReadBusy_1(); } void EPD_4IN2B_V2_Clear_new_1(void) { UWORD Width, Height; Width = (EPD_4IN2B_V2_WIDTH % 8 == 0)? (EPD_4IN2B_V2_WIDTH / 8 ): (EPD_4IN2B_V2_WIDTH / 8 + 1); Height = EPD_4IN2B_V2_HEIGHT; EPD_4IN2B_V2_SendCommand(0x24); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2B_V2_SendData(0xFF); } } EPD_4IN2B_V2_SendCommand(0x26); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2B_V2_SendData(0x00); } } EPD_4IN2B_V2_SendCommand(0x22); EPD_4IN2B_V2_SendData(0xF7); EPD_4IN2B_V2_SendCommand(0x20); EPD_4IN2B_V2_ReadBusy_1(); } void EPD_4IN2B_V2_Clear_1(void) { if(flag == 0) EPD_4IN2B_V2_Clear_new_1(); else EPD_4IN2B_V2_Clear_old_1(); } /****************************************************************************** function : Sends the image buffer in RAM to e-Paper and displays parameter: ******************************************************************************/ void EPD_4IN2B_V2_Display_old_1(const UBYTE *image, char flag_1) { UWORD Width, Height; Width = (EPD_4IN2B_V2_WIDTH % 8 == 0)? (EPD_4IN2B_V2_WIDTH / 8 ): (EPD_4IN2B_V2_WIDTH / 8 + 1); Height = EPD_4IN2B_V2_HEIGHT; if(flag_1 == 0) { EPD_4IN2B_V2_SendCommand(0x10); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2B_V2_SendData(image[i + j * Width]); } } } else { EPD_4IN2B_V2_SendCommand(0x13); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2B_V2_SendData(image[i + j * Width]); } } EPD_4IN2B_V2_SendCommand(0x12); DEV_Delay_ms(100); EPD_4IN2B_V2_ReadBusy_1(); } } void EPD_4IN2B_V2_Display_new_1(const UBYTE *image, char flag_1) { UWORD Width, Height; Width = (EPD_4IN2B_V2_WIDTH % 8 == 0)? (EPD_4IN2B_V2_WIDTH / 8 ): (EPD_4IN2B_V2_WIDTH / 8 + 1); Height = EPD_4IN2B_V2_HEIGHT; if(flag_1 == 0) { EPD_4IN2B_V2_SendCommand(0x24); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2B_V2_SendData(image[i + j * Width]); } } } else { EPD_4IN2B_V2_SendCommand(0x26); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2B_V2_SendData(~image[i + j * Width]); } } EPD_4IN2B_V2_SendCommand(0x22); EPD_4IN2B_V2_SendData(0xF7); EPD_4IN2B_V2_SendCommand(0x20); EPD_4IN2B_V2_ReadBusy_1(); } } void EPD_4IN2B_V2_Display_1(const UBYTE *image, char flag_1) { if(flag == 0) EPD_4IN2B_V2_Display_new_1(image, flag_1); else EPD_4IN2B_V2_Display_old_1(image, flag_1); } /****************************************************************************** function : Enter sleep mode parameter: ******************************************************************************/ void EPD_4IN2B_V2_Sleep_old_1(void) { EPD_4IN2B_V2_SendCommand(0X50); EPD_4IN2B_V2_SendData(0xf7); EPD_4IN2B_V2_SendCommand(0x02); EPD_4IN2B_V2_ReadBusy_1(); EPD_4IN2B_V2_SendCommand(0x07); EPD_4IN2B_V2_SendData(0XA5); } void EPD_4IN2B_V2_Sleep_new_1(void) { EPD_4IN2B_V2_SendCommand(0X10); //deep sleep EPD_4IN2B_V2_SendData(0x03); } void EPD_4IN2B_V2_Sleep_1(void) { if(flag == 0) EPD_4IN2B_V2_Sleep_new_1(); else EPD_4IN2B_V2_Sleep_old_1(); }