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examples/LVGL_Image/Display_ST7789.cpp
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245
examples/LVGL_Image/Display_ST7789.cpp
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#include "Display_ST7789.h"
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#define SPI_WRITE(_dat) SPI.transfer(_dat)
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#define SPI_WRITE_Word(_dat) SPI.transfer16(_dat)
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#define SPI_WRITE_nByte(_SetData,_ReadData,_Size) SPI.transferBytes(_SetData,_ReadData,_Size)
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void SPI_Init()
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{
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SPI.begin(EXAMPLE_PIN_NUM_SCLK,EXAMPLE_PIN_NUM_MISO,EXAMPLE_PIN_NUM_MOSI);
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}
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void LCD_WriteCommand(uint8_t Cmd)
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{
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SPI.beginTransaction(SPISettings(SPIFreq, MSBFIRST, SPI_MODE0));
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digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, LOW);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_DC, LOW);
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SPI_WRITE(Cmd);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, HIGH);
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SPI.endTransaction();
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}
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void LCD_WriteData(uint8_t Data)
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{
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SPI.beginTransaction(SPISettings(SPIFreq, MSBFIRST, SPI_MODE0));
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digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, LOW);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_DC, HIGH);
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SPI_WRITE(Data);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, HIGH);
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SPI.endTransaction();
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}
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void LCD_WriteData_Word(uint16_t Data)
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{
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SPI.beginTransaction(SPISettings(SPIFreq, MSBFIRST, SPI_MODE0));
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digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, LOW);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_DC, HIGH);
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SPI_WRITE_Word(Data);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, HIGH);
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SPI.endTransaction();
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}
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void LCD_WriteData_nbyte(uint8_t* SetData,uint8_t* ReadData,uint32_t Size)
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{
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SPI.beginTransaction(SPISettings(SPIFreq, MSBFIRST, SPI_MODE0));
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digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, LOW);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_DC, HIGH);
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SPI_WRITE_nByte(SetData, ReadData, Size);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, HIGH);
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SPI.endTransaction();
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}
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void LCD_Reset(void)
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{
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digitalWrite(EXAMPLE_PIN_NUM_LCD_CS, LOW);
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delay(50);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_RST, LOW);
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delay(50);
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digitalWrite(EXAMPLE_PIN_NUM_LCD_RST, HIGH);
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delay(50);
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}
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void LCD_Init(void)
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{
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pinMode(EXAMPLE_PIN_NUM_LCD_CS, OUTPUT);
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pinMode(EXAMPLE_PIN_NUM_LCD_DC, OUTPUT);
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pinMode(EXAMPLE_PIN_NUM_LCD_RST, OUTPUT);
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Backlight_Init();
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SPI_Init();
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LCD_Reset();
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//************* Start Initial Sequence **********//
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LCD_WriteCommand(0x11);
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delay(120);
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LCD_WriteCommand(0x36);
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if (HORIZONTAL)
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LCD_WriteData(0x00);
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else
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LCD_WriteData(0x70);
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LCD_WriteCommand(0x3A);
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LCD_WriteData(0x05);
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LCD_WriteCommand(0xB0);
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LCD_WriteData(0x00);
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LCD_WriteData(0xE8);
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LCD_WriteCommand(0xB2);
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LCD_WriteData(0x0C);
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LCD_WriteData(0x0C);
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LCD_WriteData(0x00);
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LCD_WriteData(0x33);
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LCD_WriteData(0x33);
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LCD_WriteCommand(0xB7);
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LCD_WriteData(0x35);
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LCD_WriteCommand(0xBB);
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LCD_WriteData(0x35);
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LCD_WriteCommand(0xC0);
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LCD_WriteData(0x2C);
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LCD_WriteCommand(0xC2);
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LCD_WriteData(0x01);
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LCD_WriteCommand(0xC3);
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LCD_WriteData(0x13);
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LCD_WriteCommand(0xC4);
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LCD_WriteData(0x20);
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LCD_WriteCommand(0xC6);
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LCD_WriteData(0x0F);
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LCD_WriteCommand(0xD0);
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LCD_WriteData(0xA4);
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LCD_WriteData(0xA1);
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LCD_WriteCommand(0xD6);
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LCD_WriteData(0xA1);
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LCD_WriteCommand(0xE0);
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LCD_WriteData(0xF0);
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LCD_WriteData(0x00);
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LCD_WriteData(0x04);
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LCD_WriteData(0x04);
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LCD_WriteData(0x04);
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LCD_WriteData(0x05);
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LCD_WriteData(0x29);
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LCD_WriteData(0x33);
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LCD_WriteData(0x3E);
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LCD_WriteData(0x38);
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LCD_WriteData(0x12);
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LCD_WriteData(0x12);
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LCD_WriteData(0x28);
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LCD_WriteData(0x30);
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LCD_WriteCommand(0xE1);
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LCD_WriteData(0xF0);
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LCD_WriteData(0x07);
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LCD_WriteData(0x0A);
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LCD_WriteData(0x0D);
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LCD_WriteData(0x0B);
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LCD_WriteData(0x07);
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LCD_WriteData(0x28);
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LCD_WriteData(0x33);
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LCD_WriteData(0x3E);
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LCD_WriteData(0x36);
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LCD_WriteData(0x14);
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LCD_WriteData(0x14);
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LCD_WriteData(0x29);
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LCD_WriteData(0x32);
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LCD_WriteCommand(0x21);
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LCD_WriteCommand(0x11);
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delay(120);
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LCD_WriteCommand(0x29);
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}
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/******************************************************************************
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function: Set the cursor position
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parameter :
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Xstart: Start uint16_t x coordinate
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Ystart: Start uint16_t y coordinate
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Xend : End uint16_t coordinates
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Yend : End uint16_t coordinatesen
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******************************************************************************/
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void LCD_SetCursor(uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend)
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{
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if (HORIZONTAL) {
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// set the X coordinates
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LCD_WriteCommand(0x2A);
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LCD_WriteData(Xstart >> 8);
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LCD_WriteData(Xstart + Offset_X);
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LCD_WriteData(Xend >> 8);
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LCD_WriteData(Xend + Offset_X);
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// set the Y coordinates
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LCD_WriteCommand(0x2B);
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LCD_WriteData(Ystart >> 8);
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LCD_WriteData(Ystart + Offset_Y);
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LCD_WriteData(Yend >> 8);
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LCD_WriteData(Yend + Offset_Y);
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}
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else {
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// set the X coordinates
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LCD_WriteCommand(0x2A);
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LCD_WriteData(Ystart >> 8);
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LCD_WriteData(Ystart + Offset_Y);
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LCD_WriteData(Yend >> 8);
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LCD_WriteData(Yend + Offset_Y);
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// set the Y coordinates
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LCD_WriteCommand(0x2B);
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LCD_WriteData(Xstart >> 8);
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LCD_WriteData(Xstart + Offset_X);
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LCD_WriteData(Xend >> 8);
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LCD_WriteData(Xend + Offset_X);
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}
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LCD_WriteCommand(0x2C);
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}
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/******************************************************************************
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function: Refresh the image in an area
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parameter :
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Xstart: Start uint16_t x coordinate
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Ystart: Start uint16_t y coordinate
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Xend : End uint16_t coordinates
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Yend : End uint16_t coordinates
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color : Set the color
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******************************************************************************/
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void LCD_addWindow(uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend,uint16_t* color)
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{
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// uint16_t i,j;
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// LCD_SetCursor(Xstart, Ystart, Xend,Yend);
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// uint16_t Show_Width = Xend - Xstart + 1;
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// uint16_t Show_Height = Yend - Ystart + 1;
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// for(i = 0; i < Show_Height; i++){
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// for(j = 0; j < Show_Width; j++){
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// LCD_WriteData_Word(color[(i*(Show_Width))+j]);
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// }
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// }
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uint16_t Show_Width = Xend - Xstart + 1;
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uint16_t Show_Height = Yend - Ystart + 1;
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uint32_t numBytes = Show_Width * Show_Height * sizeof(uint16_t);
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uint8_t Read_D[numBytes];
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LCD_SetCursor(Xstart, Ystart, Xend, Yend);
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LCD_WriteData_nbyte((uint8_t*)color, Read_D, numBytes);
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}
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// backlight
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void Backlight_Init(void)
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{
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ledcAttach(EXAMPLE_PIN_NUM_BK_LIGHT, Frequency, Resolution);
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ledcWrite(EXAMPLE_PIN_NUM_BK_LIGHT, 100);
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}
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void Set_Backlight(uint8_t Light) //
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{
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if(Light > 100 || Light < 0)
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printf("Set Backlight parameters in the range of 0 to 100 \r\n");
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else{
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uint32_t Backlight = Light*10;
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ledcWrite(EXAMPLE_PIN_NUM_BK_LIGHT, Backlight);
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}
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}
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