247 lines
7.9 KiB
C
247 lines
7.9 KiB
C
/*****************************************************************************
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* | File : EPD_7IN5B_V2.c
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* | Author : Waveshare team
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* | Function : Electronic paper driver
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2020-11-30
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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_7in5b_V2.h"
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#include "Debug.h"
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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_7IN5B_V2_Reset(void)
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{
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DEV_Digital_Write(EPD_RST_PIN, 1);
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DEV_Delay_ms(200);
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DEV_Digital_Write(EPD_RST_PIN, 0);
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DEV_Delay_ms(2);
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DEV_Digital_Write(EPD_RST_PIN, 1);
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DEV_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_7IN5B_V2_SendCommand(UBYTE Reg)
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{
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DEV_Digital_Write(EPD_DC_PIN, 0);
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DEV_Digital_Write(EPD_CS_PIN, 0);
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DEV_SPI_WriteByte(Reg);
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DEV_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_7IN5B_V2_SendData(UBYTE Data)
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{
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DEV_Digital_Write(EPD_DC_PIN, 1);
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DEV_Digital_Write(EPD_CS_PIN, 0);
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DEV_SPI_WriteByte(Data);
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DEV_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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void EPD_7IN5B_V2_WaitUntilIdle(void)
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{
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Debug("e-Paper busy\r\n");
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do {
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DEV_Delay_ms(20);
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}while(!(DEV_Digital_Read(EPD_BUSY_PIN)));
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DEV_Delay_ms(20);
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Debug("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_7IN5B_V2_TurnOnDisplay(void)
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{
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EPD_7IN5B_V2_SendCommand(0x12); //DISPLAY REFRESH
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DEV_Delay_ms(100); //!!!The delay here is necessary, 200uS at least!!!
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EPD_7IN5B_V2_WaitUntilIdle();
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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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UBYTE EPD_7IN5B_V2_Init(void)
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{
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EPD_7IN5B_V2_Reset();
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EPD_7IN5B_V2_SendCommand(0x01); //POWER SETTING
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EPD_7IN5B_V2_SendData(0x07);
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EPD_7IN5B_V2_SendData(0x07); //VGH=20V,VGL=-20V
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EPD_7IN5B_V2_SendData(0x3f); //VDH=15V
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EPD_7IN5B_V2_SendData(0x3f); //VDL=-15V
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EPD_7IN5B_V2_SendCommand(0x04); //POWER ON
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DEV_Delay_ms(100);
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EPD_7IN5B_V2_WaitUntilIdle();
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EPD_7IN5B_V2_SendCommand(0X00); //PANNEL SETTING
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EPD_7IN5B_V2_SendData(0x0F); //KW-3f KWR-2F BWROTP 0f BWOTP 1f
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EPD_7IN5B_V2_SendCommand(0x61); //tres
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EPD_7IN5B_V2_SendData(0x03); //source 800
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EPD_7IN5B_V2_SendData(0x20);
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EPD_7IN5B_V2_SendData(0x01); //gate 480
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EPD_7IN5B_V2_SendData(0xE0);
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EPD_7IN5B_V2_SendCommand(0X15);
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EPD_7IN5B_V2_SendData(0x00);
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EPD_7IN5B_V2_SendCommand(0X50); //VCOM AND DATA INTERVAL SETTING
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EPD_7IN5B_V2_SendData(0x11);
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EPD_7IN5B_V2_SendData(0x07);
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EPD_7IN5B_V2_SendCommand(0X60); //TCON SETTING
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EPD_7IN5B_V2_SendData(0x22);
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EPD_7IN5B_V2_SendCommand(0x65); // Resolution setting
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EPD_7IN5B_V2_SendData(0x00);
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EPD_7IN5B_V2_SendData(0x00);//800*480
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EPD_7IN5B_V2_SendData(0x00);
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EPD_7IN5B_V2_SendData(0x00);
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return 0;
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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_7IN5B_V2_Clear(void)
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{
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UWORD Width, Height;
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Width =(EPD_7IN5B_V2_WIDTH % 8 == 0)?(EPD_7IN5B_V2_WIDTH / 8 ):(EPD_7IN5B_V2_WIDTH / 8 + 1);
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Height = EPD_7IN5B_V2_HEIGHT;
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UWORD i;
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EPD_7IN5B_V2_SendCommand(0x10);
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for(i=0; i<Width*Height; i++) {
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EPD_7IN5B_V2_SendData(0xff);
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}
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EPD_7IN5B_V2_SendCommand(0x13);
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for(i=0; i<Width*Height; i++) {
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EPD_7IN5B_V2_SendData(0x00);
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}
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EPD_7IN5B_V2_TurnOnDisplay();
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}
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void EPD_7IN5B_V2_ClearRed(void)
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{
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UWORD Width, Height;
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Width =(EPD_7IN5B_V2_WIDTH % 8 == 0)?(EPD_7IN5B_V2_WIDTH / 8 ):(EPD_7IN5B_V2_WIDTH / 8 + 1);
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Height = EPD_7IN5B_V2_HEIGHT;
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UWORD i;
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EPD_7IN5B_V2_SendCommand(0x10);
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for(i=0; i<Width*Height; i++) {
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EPD_7IN5B_V2_SendData(0xff);
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}
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EPD_7IN5B_V2_SendCommand(0x13);
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for(i=0; i<Width*Height; i++) {
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EPD_7IN5B_V2_SendData(0xff);
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}
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EPD_7IN5B_V2_TurnOnDisplay();
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}
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void EPD_7IN5B_V2_ClearBlack(void)
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{
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UWORD Width, Height;
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Width =(EPD_7IN5B_V2_WIDTH % 8 == 0)?(EPD_7IN5B_V2_WIDTH / 8 ):(EPD_7IN5B_V2_WIDTH / 8 + 1);
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Height = EPD_7IN5B_V2_HEIGHT;
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UWORD i;
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EPD_7IN5B_V2_SendCommand(0x10);
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for(i=0; i<Width*Height; i++) {
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EPD_7IN5B_V2_SendData(0x00);
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}
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EPD_7IN5B_V2_SendCommand(0x13);
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for(i=0; i<Width*Height; i++) {
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EPD_7IN5B_V2_SendData(0x00);
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}
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EPD_7IN5B_V2_TurnOnDisplay();
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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_7IN5B_V2_Display(const UBYTE *blackimage, const UBYTE *ryimage)
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{
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UDOUBLE Width, Height;
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Width =(EPD_7IN5B_V2_WIDTH % 8 == 0)?(EPD_7IN5B_V2_WIDTH / 8 ):(EPD_7IN5B_V2_WIDTH / 8 + 1);
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Height = EPD_7IN5B_V2_HEIGHT;
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//send black data
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EPD_7IN5B_V2_SendCommand(0x10);
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for (UDOUBLE j = 0; j < Height; j++) {
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for (UDOUBLE i = 0; i < Width; i++) {
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EPD_7IN5B_V2_SendData(blackimage[i + j * Width]);
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}
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}
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//send red data
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EPD_7IN5B_V2_SendCommand(0x13);
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for (UDOUBLE j = 0; j < Height; j++) {
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for (UDOUBLE i = 0; i < Width; i++) {
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EPD_7IN5B_V2_SendData(~ryimage[i + j * Width]);
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}
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}
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EPD_7IN5B_V2_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_7IN5B_V2_Sleep(void)
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{
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EPD_7IN5B_V2_SendCommand(0X02); //power off
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EPD_7IN5B_V2_WaitUntilIdle();
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EPD_7IN5B_V2_SendCommand(0X07); //deep sleep
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EPD_7IN5B_V2_SendData(0xA5);
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}
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