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198 lines
6.9 KiB
C
198 lines
6.9 KiB
C
/*****************************************************************************
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* | File : EPD_1in54b_V2.h
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* | Author : Waveshare team
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* | Function : 1.54inch e-paper b V2
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2020-04-02
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* | Info :
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* -----------------------------------------------------------------------------
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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_1in54b_V2.h"
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#ifdef EPD_1IN54B_V2
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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_1IN54B_V2_Reset(void)
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{
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EPD_Digital_Write(EPD_RST_PIN, 1);
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EPD_Delay_ms(100);
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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(100);
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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_1IN54B_V2_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_1IN54B_V2_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_1IN54B_V2_ReadBusy(void)
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{
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EPD_Printf("e-Paper busy\r\n");
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while(1) {
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if(EPD_Digital_Read(EPD_BUSY_PIN) == 0)
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break;
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}
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EPD_Delay_ms(200);
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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 : Initialize the e-Paper register
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parameter:
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******************************************************************************/
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void EPD_1IN54B_V2_Init(void)
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{
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EPD_1IN54B_V2_Reset();
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EPD_1IN54B_V2_ReadBusy();
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EPD_1IN54B_V2_SendCommand(0x12); //SWRESET
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EPD_1IN54B_V2_ReadBusy();
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EPD_1IN54B_V2_SendCommand(0x01); //Driver output control
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EPD_1IN54B_V2_SendData(0xC7);
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EPD_1IN54B_V2_SendData(0x00);
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EPD_1IN54B_V2_SendData(0x01);
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EPD_1IN54B_V2_SendCommand(0x11); //data entry mode
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EPD_1IN54B_V2_SendData(0x01);
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EPD_1IN54B_V2_SendCommand(0x44); //set Ram-X address start/end position
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EPD_1IN54B_V2_SendData(0x00);
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EPD_1IN54B_V2_SendData(0x18); //0x18-->(24+1)*8=200
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EPD_1IN54B_V2_SendCommand(0x45); //set Ram-Y address start/end position
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EPD_1IN54B_V2_SendData(0xC7); //0xC7-->(199+1)=200
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EPD_1IN54B_V2_SendData(0x00);
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EPD_1IN54B_V2_SendData(0x00);
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EPD_1IN54B_V2_SendData(0x00);
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EPD_1IN54B_V2_SendCommand(0x3C); //BorderWavefrom
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EPD_1IN54B_V2_SendData(0x05);
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EPD_1IN54B_V2_SendCommand(0x18); //Read built-in temperature sensor
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EPD_1IN54B_V2_SendData(0x80);
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EPD_1IN54B_V2_SendCommand(0x4E); // set RAM x address count to 0;
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EPD_1IN54B_V2_SendData(0x00);
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EPD_1IN54B_V2_SendCommand(0x4F); // set RAM y address count to 0X199;
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EPD_1IN54B_V2_SendData(0xC7);
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EPD_1IN54B_V2_SendData(0x00);
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EPD_1IN54B_V2_ReadBusy();
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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_1IN54B_V2_Clear(void)
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{
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unsigned int i;
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EPD_1IN54B_V2_SendCommand(0x24); //write RAM for black(0)/white (1)
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for(i=0;i<5000;i++)
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{
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EPD_1IN54B_V2_SendData(0xff);
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}
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EPD_1IN54B_V2_SendCommand(0x26); //write RAM for black(0)/white (1)
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for(i=0;i<5000;i++)
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{
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EPD_1IN54B_V2_SendData(0x00);
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}
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EPD_1IN54B_V2_SendCommand(0x22); //Display Update Control
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EPD_1IN54B_V2_SendData(0xF7);
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EPD_1IN54B_V2_SendCommand(0x20); //Activate Display Update Sequence
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EPD_1IN54B_V2_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_1IN54B_V2_Display(const UBYTE *blackimage, const UBYTE *redimage)
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{
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UWORD Width, Height;
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Width = (EPD_1IN54B_V2_WIDTH % 8 == 0)? (EPD_1IN54B_V2_WIDTH / 8 ): (EPD_1IN54B_V2_WIDTH / 8 + 1);
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Height = EPD_1IN54B_V2_HEIGHT;
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unsigned int i;
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EPD_1IN54B_V2_SendCommand(0x24); //write RAM for black(0)/white (1)
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for(i=0;i<Width * Height;i++)
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{
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EPD_1IN54B_V2_SendData(blackimage[i]);
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}
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EPD_1IN54B_V2_SendCommand(0x26); //write RAM for black(0)/white (1)
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for(i=0;i<Width * Height;i++)
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{
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EPD_1IN54B_V2_SendData(~redimage[i]);
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}
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EPD_1IN54B_V2_SendCommand(0x22); //Display Update Control
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EPD_1IN54B_V2_SendData(0xF7);
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EPD_1IN54B_V2_SendCommand(0x20); //Activate Display Update Sequence
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EPD_1IN54B_V2_ReadBusy();
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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_1IN54B_V2_Sleep(void)
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{
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EPD_1IN54B_V2_SendCommand(0x10); //enter deep sleep
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EPD_1IN54B_V2_SendData(0x01);
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EPD_Delay_ms(100);
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}
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#endif
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