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217 lines
7.3 KiB
C
217 lines
7.3 KiB
C
/*****************************************************************************
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* | File : EPD_2in66b.c
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* | Author : Waveshare team
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* | Function : 2.66inch e-paper b
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2020-12-02
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* | Info :
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* -----------------------------------------------------------------------------
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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******************************************************************************/
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#include "EPD_2in66b.h"
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#ifdef EPD_2IN66B
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/******************************************************************************
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function : Software reset
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parameter:
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******************************************************************************/
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static void EPD_2IN66B_Reset(void)
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{
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EPD_Digital_Write(EPD_RST_PIN, 1);
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EPD_Delay_ms(200);
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EPD_Digital_Write(EPD_RST_PIN, 0);
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EPD_Delay_ms(2);
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EPD_Digital_Write(EPD_RST_PIN, 1);
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EPD_Delay_ms(200);
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}
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/******************************************************************************
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function : send command
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parameter:
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Reg : Command register
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******************************************************************************/
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static void EPD_2IN66B_SendCommand(UBYTE Reg)
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{
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EPD_Digital_Write(EPD_DC_PIN, 0);
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EPD_Digital_Write(EPD_CS_PIN, 0);
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EPD_SPI_WriteByte(Reg);
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EPD_Digital_Write(EPD_CS_PIN, 1);
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}
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/******************************************************************************
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function : send data
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parameter:
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Data : Write data
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******************************************************************************/
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static void EPD_2IN66B_SendData(UBYTE Data)
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{
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EPD_Digital_Write(EPD_DC_PIN, 1);
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EPD_Digital_Write(EPD_CS_PIN, 0);
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EPD_SPI_WriteByte(Data);
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EPD_Digital_Write(EPD_CS_PIN, 1);
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}
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/******************************************************************************
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function : Wait until the busy_pin goes LOW
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parameter:
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******************************************************************************/
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static void EPD_2IN66B_ReadBusy(void)
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{
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EPD_Printf("e-Paper busy\r\n");
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EPD_Delay_ms(50);
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while(EPD_Digital_Read(EPD_BUSY_PIN) == 1) { //LOW: idle, HIGH: busy
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EPD_Delay_ms(10);
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}
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EPD_Delay_ms(50);
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EPD_Printf("e-Paper busy release\r\n");
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}
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/******************************************************************************
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function : Turn On Display
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parameter:
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******************************************************************************/
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static void EPD_2IN66B_TurnOnDisplay(void)
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{
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EPD_2IN66B_SendCommand(0x20);
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EPD_2IN66B_ReadBusy();
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}
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/******************************************************************************
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function : Setting the display window
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parameter:
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******************************************************************************/
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static void EPD_2IN66B_SetWindows(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend)
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{
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EPD_2IN66B_SendCommand(0x44); // SET_RAM_X_ADDRESS_START_END_POSITION
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EPD_2IN66B_SendData((Xstart>>3) & 0x1F);
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EPD_2IN66B_SendData((Xend>>3) & 0x1F);
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EPD_2IN66B_SendCommand(0x45); // SET_RAM_Y_ADDRESS_START_END_POSITION
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EPD_2IN66B_SendData(Ystart & 0xFF);
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EPD_2IN66B_SendData((Ystart >> 8) & 0x01);
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EPD_2IN66B_SendData(Yend & 0xFF);
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EPD_2IN66B_SendData((Yend >> 8) & 0x01);
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}
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/******************************************************************************
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function : Set Cursor
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parameter:
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******************************************************************************/
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static void EPD_2IN66B_SetCursor(UWORD Xstart, UWORD Ystart)
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{
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EPD_2IN66B_SendCommand(0x4E); // SET_RAM_X_ADDRESS_COUNTER
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EPD_2IN66B_SendData(Xstart & 0x1F);
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EPD_2IN66B_SendCommand(0x4F); // SET_RAM_Y_ADDRESS_COUNTER
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EPD_2IN66B_SendData(Ystart & 0xFF);
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EPD_2IN66B_SendData((Ystart >> 8) & 0x01);
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}
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/******************************************************************************
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function : Initialize the e-Paper register
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parameter:
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******************************************************************************/
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void EPD_2IN66B_Init(void)
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{
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EPD_2IN66B_Reset();
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EPD_2IN66B_ReadBusy();
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EPD_2IN66B_SendCommand(0x12);//soft reset
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EPD_2IN66B_ReadBusy();
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EPD_2IN66B_SendCommand(0x11); //data entry mode
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EPD_2IN66B_SendData(0x03);
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EPD_2IN66B_SetWindows(0, 0, EPD_2IN66B_WIDTH-1, EPD_2IN66B_HEIGHT-1);
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EPD_2IN66B_SendCommand(0x21); // Display update control
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EPD_2IN66B_SendData(0x00);
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EPD_2IN66B_SendData(0x80);
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EPD_2IN66B_SetCursor(0, 0);
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EPD_2IN66B_ReadBusy();
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}
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/******************************************************************************
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function : Sends the image buffer in RAM to e-Paper and displays
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parameter:
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******************************************************************************/
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void EPD_2IN66B_Display(UBYTE *ImageBlack, UBYTE*ImageRed)
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{
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UWORD Width, Height;
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Width = (EPD_2IN66B_WIDTH % 8 == 0)? (EPD_2IN66B_WIDTH / 8 ): (EPD_2IN66B_WIDTH / 8 + 1);
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Height = EPD_2IN66B_HEIGHT;
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EPD_2IN66B_SendCommand(0x24);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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EPD_2IN66B_SendData(ImageBlack[i + j * Width]);
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}
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}
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EPD_2IN66B_SendCommand(0x26);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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EPD_2IN66B_SendData(~ImageRed[i + j * Width]);
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}
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}
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EPD_2IN66B_TurnOnDisplay();
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}
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/******************************************************************************
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function : Clear screen
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parameter:
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******************************************************************************/
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void EPD_2IN66B_Clear(void)
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{
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UWORD Width, Height;
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Width = (EPD_2IN66B_WIDTH % 8 == 0)? (EPD_2IN66B_WIDTH / 8 ): (EPD_2IN66B_WIDTH / 8 + 1);
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Height = EPD_2IN66B_HEIGHT;
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EPD_2IN66B_SendCommand(0x24);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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EPD_2IN66B_SendData(0xff);
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}
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}
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EPD_2IN66B_SendCommand(0x26);
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for (UWORD j = 0; j < Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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EPD_2IN66B_SendData(0x00);
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}
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}
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EPD_2IN66B_TurnOnDisplay();
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}
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/******************************************************************************
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function : Enter sleep mode
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parameter:
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******************************************************************************/
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void EPD_2IN66B_Sleep(void)
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{
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EPD_2IN66B_SendCommand(0x10);
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EPD_2IN66B_SendData(0x01);
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}
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#endif
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