/***************************************************************************** * | File : EPD_4in0e.c * | Author : Waveshare team * | Function : 4inch e-Paper (E) Driver * | Info : *---------------- * | This version: V1.0 * | Date : 2024-08-20 * | 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_4in0e.h" #include "Debug.h" /****************************************************************************** function : Software reset parameter: ******************************************************************************/ static void EPD_4IN0E_Reset(void) { DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(20); DEV_Digital_Write(EPD_RST_PIN, 0); DEV_Delay_ms(2); DEV_Digital_Write(EPD_RST_PIN, 1); DEV_Delay_ms(20); } /****************************************************************************** function : send command parameter: Reg : Command register ******************************************************************************/ static void EPD_4IN0E_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_4IN0E_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: ******************************************************************************/ static void EPD_4IN0E_ReadBusyH(void) { Debug("e-Paper busy H\r\n"); while(!DEV_Digital_Read(EPD_BUSY_PIN)) { //LOW: busy, HIGH: idle DEV_Delay_ms(10); } DEV_Delay_ms(200); Debug("e-Paper busy H release\r\n"); } /****************************************************************************** function : Turn On Display parameter: ******************************************************************************/ static void EPD_4IN0E_TurnOnDisplay(void) { EPD_4IN0E_SendCommand(0x04); // POWER_ON EPD_4IN0E_ReadBusyH(); DEV_Delay_ms(200); //Second setting EPD_4IN0E_SendCommand(0x06); EPD_4IN0E_SendData(0x6F); EPD_4IN0E_SendData(0x1F); EPD_4IN0E_SendData(0x17); EPD_4IN0E_SendData(0x27); DEV_Delay_ms(200); EPD_4IN0E_SendCommand(0x12); // DISPLAY_REFRESH EPD_4IN0E_SendData(0x00); EPD_4IN0E_ReadBusyH(); EPD_4IN0E_SendCommand(0x02); // POWER_OFF EPD_4IN0E_SendData(0X00); EPD_4IN0E_ReadBusyH(); DEV_Delay_ms(200); } /****************************************************************************** function : Initialize the e-Paper register parameter: ******************************************************************************/ void EPD_4IN0E_Init(void) { EPD_4IN0E_Reset(); EPD_4IN0E_ReadBusyH(); DEV_Delay_ms(30); EPD_4IN0E_SendCommand(0xAA); // CMDH EPD_4IN0E_SendData(0x49); EPD_4IN0E_SendData(0x55); EPD_4IN0E_SendData(0x20); EPD_4IN0E_SendData(0x08); EPD_4IN0E_SendData(0x09); EPD_4IN0E_SendData(0x18); EPD_4IN0E_SendCommand(0x01); EPD_4IN0E_SendData(0x3F); EPD_4IN0E_SendCommand(0x00); EPD_4IN0E_SendData(0x5F); EPD_4IN0E_SendData(0x69); EPD_4IN0E_SendCommand(0x05); EPD_4IN0E_SendData(0x40); EPD_4IN0E_SendData(0x1F); EPD_4IN0E_SendData(0x1F); EPD_4IN0E_SendData(0x2C); EPD_4IN0E_SendCommand(0x08); EPD_4IN0E_SendData(0x6F); EPD_4IN0E_SendData(0x1F); EPD_4IN0E_SendData(0x1F); EPD_4IN0E_SendData(0x22); EPD_4IN0E_SendCommand(0x06); EPD_4IN0E_SendData(0x6F); EPD_4IN0E_SendData(0x1F); EPD_4IN0E_SendData(0x17); EPD_4IN0E_SendData(0x17); EPD_4IN0E_SendCommand(0x03); EPD_4IN0E_SendData(0x00); EPD_4IN0E_SendData(0x54); EPD_4IN0E_SendData(0x00); EPD_4IN0E_SendData(0x44); EPD_4IN0E_SendCommand(0x60); EPD_4IN0E_SendData(0x02); EPD_4IN0E_SendData(0x00); EPD_4IN0E_SendCommand(0x30); EPD_4IN0E_SendData(0x08); EPD_4IN0E_SendCommand(0x50); EPD_4IN0E_SendData(0x3F); EPD_4IN0E_SendCommand(0x61); EPD_4IN0E_SendData(0x01); EPD_4IN0E_SendData(0x90); EPD_4IN0E_SendData(0x02); EPD_4IN0E_SendData(0x58); EPD_4IN0E_SendCommand(0xE3); EPD_4IN0E_SendData(0x2F); EPD_4IN0E_SendCommand(0x84); EPD_4IN0E_SendData(0x01); EPD_4IN0E_ReadBusyH(); } /****************************************************************************** function : Clear screen parameter: ******************************************************************************/ void EPD_4IN0E_Clear(UBYTE color) { UWORD Width, Height; Width = (EPD_4IN0E_WIDTH % 2 == 0)? (EPD_4IN0E_WIDTH / 2 ): (EPD_4IN0E_WIDTH / 2 + 1); Height = EPD_4IN0E_HEIGHT; EPD_4IN0E_SendCommand(0x10); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN0E_SendData((color<<4)|color); } } EPD_4IN0E_TurnOnDisplay(); } /****************************************************************************** function : show 7 kind of color block parameter: ******************************************************************************/ void EPD_4IN0E_Show7Block(void) { unsigned long j, k; unsigned char const Color_seven[6] = {EPD_4IN0E_BLACK, EPD_4IN0E_YELLOW, EPD_4IN0E_RED, EPD_4IN0E_BLUE, EPD_4IN0E_GREEN, EPD_4IN0E_WHITE}; EPD_4IN0E_SendCommand(0x10); for(k = 0 ; k < 6; k ++) { for(j = 0 ; j < 20000; j ++) { EPD_4IN0E_SendData((Color_seven[k]<<4) |Color_seven[k]); } } EPD_4IN0E_TurnOnDisplay(); } void EPD_4IN0E_Show(void) { unsigned long k,o; unsigned char const Color_seven[6] = {EPD_4IN0E_BLACK, EPD_4IN0E_YELLOW, EPD_4IN0E_RED, EPD_4IN0E_BLUE, EPD_4IN0E_GREEN, EPD_4IN0E_WHITE}; UWORD Width, Height; Width = (EPD_4IN0E_WIDTH % 2 == 0)? (EPD_4IN0E_WIDTH / 2 ): (EPD_4IN0E_WIDTH / 2 + 1); Height = EPD_4IN0E_HEIGHT; k = 0; o = 0; EPD_4IN0E_SendCommand(0x10); for (UWORD j = 0; j < Height; j++) { if((j > 10) && (j<50)) for (UWORD i = 0; i < Width; i++) { EPD_4IN0E_SendData((Color_seven[0]<<4) |Color_seven[0]); } else if(o < Height/2) for (UWORD i = 0; i < Width; i++) { EPD_4IN0E_SendData((Color_seven[0]<<4) |Color_seven[0]); } else { for (UWORD i = 0; i < Width; i++) { EPD_4IN0E_SendData((Color_seven[k]<<4) |Color_seven[k]); } k++ ; if(k >= 6) k = 0; } o++ ; if(o >= Height) o = 0; } EPD_4IN0E_TurnOnDisplay(); } /****************************************************************************** function : Sends the image buffer in RAM to e-Paper and displays parameter: ******************************************************************************/ void EPD_4IN0E_Display(const UBYTE *Image) { UWORD Width, Height; Width = (EPD_4IN0E_WIDTH % 2 == 0)? (EPD_4IN0E_WIDTH / 2 ): (EPD_4IN0E_WIDTH / 2 + 1); Height = EPD_4IN0E_HEIGHT; EPD_4IN0E_SendCommand(0x10); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN0E_SendData(Image[i + j * Width]); } } EPD_4IN0E_TurnOnDisplay(); } void EPD_4IN0E_DisplayPart(const UBYTE *Image, UWORD xstart, UWORD ystart, UWORD image_width, UWORD image_heigh) { unsigned long i, j; UWORD Width, Height; Width = (EPD_4IN0E_WIDTH % 2 == 0)? (EPD_4IN0E_WIDTH / 2 ): (EPD_4IN0E_WIDTH / 2 + 1); Height = EPD_4IN0E_HEIGHT; EPD_4IN0E_SendCommand(0x10); for(i=0; i=ystart) && (j<((image_width+xstart)/2)) && (j>=(xstart/2))) { EPD_4IN0E_SendData(Image[(j-xstart/2) + (image_width/2*(i-ystart))]); } else { EPD_4IN0E_SendData(0x11); } } } EPD_4IN0E_TurnOnDisplay(); } /****************************************************************************** function : Enter sleep mode parameter: ******************************************************************************/ void EPD_4IN0E_Sleep(void) { EPD_4IN0E_SendCommand(0x07); // DEEP_SLEEP EPD_4IN0E_SendData(0XA5); // EPD_4IN0E_ReadBusyH(); }