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Драйвер экрана

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This commit is contained in:
Tutukov Beslan
2021-11-12 05:46:14 +03:00
parent 8becbaf003
commit df472bfeec
6 changed files with 460 additions and 3 deletions
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205
ili9341.cpp Normal file
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#include "ili9341.h"
#include "stm32f7xx_ll_spi.h"
ILI9341::ILI9341(PinName MOSI, PinName MISO, PinName SCK, PinName DC, PinName RST)
: dispPort(MOSI, MISO, SCK)
, rst(RST)
, dc(DC)
{
// dispPort = new SPI(MOSI, MISO, SCK);
dispPort.frequency(27000000);
dispPort.format(8, 3);
SPIx = spi_get_peripheral_name(MOSI, MISO, SCK);
rst = 1;
osDelay(10);
rst = 0;
osDelay(10);
rst = 1;
osDelay(10);
LCD_WR_REG(0x01); //software reset
osDelay(50);
LCD_WR_REG(0x28);
// display off
//---------------------------------------------------------
// magic?
LCD_WR_REG(0xcf);
LCD_WR_Data(0x00);
LCD_WR_Data(0x83);
LCD_WR_Data(0x30);
LCD_WR_REG(0xed);
LCD_WR_Data(0x64);
LCD_WR_Data(0x03);
LCD_WR_Data(0x12);
LCD_WR_Data(0x81);
LCD_WR_REG(0xe8);
LCD_WR_Data(0x85);
LCD_WR_Data(0x01);
LCD_WR_Data(0x79);
LCD_WR_REG(0xcb);
LCD_WR_Data(0x39);
LCD_WR_Data(0x2c);
LCD_WR_Data(0x00);
LCD_WR_Data(0x34);
LCD_WR_Data(0x02);
LCD_WR_REG(0xf7);
LCD_WR_Data(0x20);
LCD_WR_REG(0xea);
LCD_WR_Data(0x00);
LCD_WR_Data(0x00);
//------------power control------------------------------
LCD_WR_REG(0xc0); //power control
LCD_WR_Data(0x26);
LCD_WR_REG(0xc1); //power control
LCD_WR_Data(0x11);
//--------------VCOM
LCD_WR_REG(0xc5); //vcom control
LCD_WR_Data(0x35); //35
LCD_WR_Data(0x3e); //3E
LCD_WR_REG(0xc7); //vcom control
LCD_WR_Data(0xbe); // 0x94
//------------memory access control------------------------
LCD_WR_REG(0x36);
// memory access control
LCD_WR_Data(0xE8); //Поворот экрана на 0 градусов
// LCD_WR_Data(0x28); //Поворот экрана на 180 градусов
LCD_WR_REG(0x3a); // pixel format set
LCD_WR_Data(0x55); //16bit /pixel
//----------------- frame rate------------------------------
LCD_WR_REG(0xb1);
// frame rate
LCD_WR_Data(0x00);
LCD_WR_Data(0x1B); //70
//----------------Gamma---------------------------------
LCD_WR_REG(0xf2); // 3Gamma Function Disable
LCD_WR_Data(0x08);
LCD_WR_REG(0x26);
LCD_WR_Data(0x01); // gamma set 4 gamma curve 01/02/04/08
LCD_WR_REG(0xE0); //positive gamma correction
LCD_WR_Data(0x1f);
LCD_WR_Data(0x1a);
LCD_WR_Data(0x18);
LCD_WR_Data(0x0a);
LCD_WR_Data(0x0f);
LCD_WR_Data(0x06);
LCD_WR_Data(0x45);
LCD_WR_Data(0x87);
LCD_WR_Data(0x32);
LCD_WR_Data(0x0a);
LCD_WR_Data(0x07);
LCD_WR_Data(0x02);
LCD_WR_Data(0x07);
LCD_WR_Data(0x05);
LCD_WR_Data(0x00);
LCD_WR_REG(0xE1); //negamma correction
LCD_WR_Data(0x00);
LCD_WR_Data(0x25);
LCD_WR_Data(0x27);
LCD_WR_Data(0x05);
LCD_WR_Data(0x10);
LCD_WR_Data(0x09);
LCD_WR_Data(0x3a);
LCD_WR_Data(0x78);
LCD_WR_Data(0x4d);
LCD_WR_Data(0x05);
LCD_WR_Data(0x18);
LCD_WR_Data(0x0d);
LCD_WR_Data(0x38);
LCD_WR_Data(0x3a);
LCD_WR_Data(0x1f);
//--------------ddram ---------------------
LCD_WR_REG(0x2a);
// column set
// size = 239
LCD_WR_Data(0x00);
LCD_WR_Data(0x00);
LCD_WR_Data(0x00);
LCD_WR_Data(0xEF);
LCD_WR_REG(0x2b);
// page address set
// size = 319
LCD_WR_Data(0x00);
LCD_WR_Data(0x00);
LCD_WR_Data(0x01);
LCD_WR_Data(0x3F);
// LCD_WR_REG(0x34);
//LCD_WR_REG(0x35);
// tearing effect off
// tearing effect on
// LCD_WR_REG(0xb4); // display inversion
// LCD_WR_Data(0x00);
LCD_WR_REG(0xb7); //entry mode set
LCD_WR_Data(0x07);
//-----------------display---------------------
LCD_WR_REG(0xb6);
// display function control
LCD_WR_Data(0x0a);
LCD_WR_Data(0x82);
LCD_WR_Data(0x27);
LCD_WR_Data(0x00);
LCD_WR_REG(0x11); //sleep out
osDelay(100);
LCD_WR_REG(0x29); // display on
}
void ILI9341::LCD_WR_Data(uint8_t Data)
{
dc = 1;
dispPort.write(Data);
}
void ILI9341::LCD_WR_REG(uint8_t Reg)
{
dc = 0;
dispPort.write(Reg);
}
void ILI9341::LCD_setaddress(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2) //set coordinate for print or other function
{
LCD_WR_REG(0x2A);
LCD_WR_Data(x1 >> 8);
LCD_WR_Data(x1);
LCD_WR_Data(x2 >> 8);
LCD_WR_Data(x2);
LCD_WR_REG(0x2B);
LCD_WR_Data(y1 >> 8);
LCD_WR_Data(y1);
LCD_WR_Data(y2 >> 8);
LCD_WR_Data(y2);
LCD_WR_REG(0x2C); //memory write
}
void ILI9341::transmitData(const uint8_t* pixels, uint16_t x, uint16_t y, uint16_t w, uint16_t h)
{
uint32_t n_bytes = w * h;
// uint8_t lo = 0, hi = 0;
LCD_setaddress(x, y, x + w - 1, y + h - 1);
// while (LL_SPI_IsActiveFlag_BSY(SPI1)) {
// }
dc = 1;
// LL_SPI_SetDataWidth((SPI_TypeDef*)SPIx, LL_SPI_DATAWIDTH_16BIT);
dispPort.format(16, 3);
while (n_bytes) {
uint8_t lo = *pixels++;
uint8_t hi = *pixels++;
// dispPort->write(hi << 8 | lo);
// dispPort->write(lo);
while (!LL_SPI_IsActiveFlag_TXE(SPI1)) {
}
LL_SPI_TransmitData16((SPI_TypeDef*)SPIx, hi << 8 | lo);
n_bytes--;
}
// LL_SPI_SetDataWidth((SPI_TypeDef*)SPIx, LL_SPI_DATAWIDTH_8BIT);
dispPort.format(8, 3);
}