/***************************************************************************** * | File : EPD_4in2b.c * | Author : Waveshare team * | Function : 4.2inch e-paper b&c * | Info : *---------------- * | This version: V3.0 * | Date : 2019-06-13 * | Info : * ----------------------------------------------------------------------------- * V3.0(2019-06-13): * 1.Change: * EPD_Reset() => EPD_4IN2BC_Reset() * EPD_SendCommand() => EPD_4IN2BC_SendCommand() * EPD_SendData() => EPD_4IN2BC_SendData() * EPD_WaitUntilIdle() => EPD_4IN2BC_ReadBusy() * EPD_Init() => EPD_4IN2BC_Init() * EPD_Clear() => EPD_4IN2BC_Clear() * EPD_Display() => EPD_4IN2BC_Display() * EPD_Sleep() => EPD_4IN2BC_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(2018-11-09): * 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_4in2bc.h" #include "Debug.h" /****************************************************************************** function : Software reset parameter: ******************************************************************************/ static void EPD_4IN2BC_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_4IN2BC_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_4IN2BC_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_4IN2BC_ReadBusy(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 : Turn On Display parameter: ******************************************************************************/ static void EPD_4IN2BC_TurnOnDisplay(void) { EPD_4IN2BC_SendCommand(0x12); // DISPLAY_REFRESH DEV_Delay_ms(100); EPD_4IN2BC_ReadBusy(); } /****************************************************************************** function : Initialize the e-Paper register parameter: ******************************************************************************/ void EPD_4IN2BC_Init(void) { EPD_4IN2BC_Reset(); EPD_4IN2BC_SendCommand(0x06); // BOOSTER_SOFT_START EPD_4IN2BC_SendData(0x17); EPD_4IN2BC_SendData(0x17); EPD_4IN2BC_SendData(0x17); // 07 0f 17 1f 27 2F 37 2f EPD_4IN2BC_SendCommand(0x04); // POWER_ON EPD_4IN2BC_ReadBusy(); EPD_4IN2BC_SendCommand(0x00); // PANEL_SETTING EPD_4IN2BC_SendData(0x0F); // LUT from OTP } /****************************************************************************** function : Clear screen parameter: ******************************************************************************/ void EPD_4IN2BC_Clear(void) { UWORD Width, Height; Width = (EPD_4IN2BC_WIDTH % 8 == 0)? (EPD_4IN2BC_WIDTH / 8 ): (EPD_4IN2BC_WIDTH / 8 + 1); Height = EPD_4IN2BC_HEIGHT; EPD_4IN2BC_SendCommand(0x10); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2BC_SendData(0xFF); } } EPD_4IN2BC_SendCommand(0x13); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2BC_SendData(0xFF); } } EPD_4IN2BC_TurnOnDisplay(); } /****************************************************************************** function : Sends the image buffer in RAM to e-Paper and displays parameter: ******************************************************************************/ void EPD_4IN2BC_Display(const UBYTE *blackimage, const UBYTE *ryimage) { UWORD Width, Height; Width = (EPD_4IN2BC_WIDTH % 8 == 0)? (EPD_4IN2BC_WIDTH / 8 ): (EPD_4IN2BC_WIDTH / 8 + 1); Height = EPD_4IN2BC_HEIGHT; EPD_4IN2BC_SendCommand(0x10); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2BC_SendData(blackimage[i + j * Width]); } } EPD_4IN2BC_SendCommand(0x13); for (UWORD j = 0; j < Height; j++) { for (UWORD i = 0; i < Width; i++) { EPD_4IN2BC_SendData(ryimage[i + j * Width]); } } EPD_4IN2BC_TurnOnDisplay(); } /****************************************************************************** function : Enter sleep mode parameter: ******************************************************************************/ void EPD_4IN2BC_Sleep(void) { EPD_4IN2BC_SendCommand(0x02); // POWER_OFF EPD_4IN2BC_ReadBusy(); EPD_4IN2BC_SendCommand(0x07); // DEEP_SLEEP EPD_4IN2BC_SendData(0XA5); }