Can you increase the driver for the HX8347G display screen?

[liuquanli1970]

The initialization and rotation fragments of HX8347G are as follows:

#define TFT_GRAMWR 0x22
#define TFT_COL_START_HIGH 0x02
#define TFT_COL_START_LOW 0x03
#define TFT_COL_END_HIGH 0x04
#define TFT_COL_END_LOW 0x05
#define TFT_ROW_START_HIGH 0x06
#define TFT_ROW_START_LOW 0x07
#define TFT_ROW_END_HIGH 0x08
#define TFT_ROW_END_LOW 0x09

void init();
{
spi_end();
delay(120);
spi_begin();
DC_C; tft_Write_8(0xEA); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0xEB); DC_D; tft_Write_8(0x20);
DC_C; tft_Write_8(0xEC); DC_D; tft_Write_8(0x0C);
DC_C; tft_Write_8(0xED); DC_D; tft_Write_8(0xC4);
DC_C; tft_Write_8(0xE8); DC_D; tft_Write_8(0x40);
DC_C; tft_Write_8(0xE9); DC_D; tft_Write_8(0x38);
DC_C; tft_Write_8(0x27); DC_D; tft_Write_8(0xA3);
DC_C; tft_Write_8(0x40); DC_D; tft_Write_8(0x01);

DC_C; tft_Write_8(0x41); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x42); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x43); DC_D; tft_Write_8(0x10);
DC_C; tft_Write_8(0x44); DC_D; tft_Write_8(0x0E);
DC_C; tft_Write_8(0x45); DC_D; tft_Write_8(0x24);
DC_C; tft_Write_8(0x46); DC_D; tft_Write_8(0x04);
DC_C; tft_Write_8(0x47); DC_D; tft_Write_8(0x50);
DC_C; tft_Write_8(0x48); DC_D; tft_Write_8(0x02);

DC_C; tft_Write_8(0x49); DC_D; tft_Write_8(0x13);
DC_C; tft_Write_8(0x4A); DC_D; tft_Write_8(0x19);
DC_C; tft_Write_8(0x4B); DC_D; tft_Write_8(0x19);
DC_C; tft_Write_8(0x4C); DC_D; tft_Write_8(0x16);
DC_C; tft_Write_8(0x50); DC_D; tft_Write_8(0x1B);
DC_C; tft_Write_8(0x51); DC_D; tft_Write_8(0x31);
DC_C; tft_Write_8(0x52); DC_D; tft_Write_8(0x2F);
DC_C; tft_Write_8(0x53); DC_D; tft_Write_8(0x3F);

DC_C; tft_Write_8(0x54); DC_D; tft_Write_8(0x3F);
DC_C; tft_Write_8(0x55); DC_D; tft_Write_8(0x3E);
DC_C; tft_Write_8(0x56); DC_D; tft_Write_8(0x2F);
DC_C; tft_Write_8(0x57); DC_D; tft_Write_8(0x7B);
DC_C; tft_Write_8(0x58); DC_D; tft_Write_8(0x09);
DC_C; tft_Write_8(0x59); DC_D; tft_Write_8(0x06);
DC_C; tft_Write_8(0x5A); DC_D; tft_Write_8(0x06);
DC_C; tft_Write_8(0x5B); DC_D; tft_Write_8(0x0C);

DC_C; tft_Write_8(0x5C); DC_D; tft_Write_8(0x1D);
DC_C; tft_Write_8(0x5D); DC_D; tft_Write_8(0xCC);
DC_C; tft_Write_8(0x1B); DC_D; tft_Write_8(0x1B);
DC_C; tft_Write_8(0x1A); DC_D; tft_Write_8(0x01);
DC_C; tft_Write_8(0x24); DC_D; tft_Write_8(0x98);
DC_C; tft_Write_8(0x25); DC_D; tft_Write_8(0x57);
DC_C; tft_Write_8(0x23); DC_D; tft_Write_8(0x40);
DC_C; tft_Write_8(0x18); DC_D; tft_Write_8(0x36);

DC_C; tft_Write_8(0x19); DC_D; tft_Write_8(0x01);
DC_C; tft_Write_8(0x1C); DC_D; tft_Write_8(0x06);
DC_C; tft_Write_8(0x1F); DC_D; tft_Write_8(0x90);
delay(10);
DC_C; tft_Write_8(0x17); DC_D; tft_Write_8(0x05);
DC_C; tft_Write_8(0x36); DC_D; tft_Write_8(0x08);
DC_C; tft_Write_8(0x28); DC_D; tft_Write_8(0x38);
delay(60);
DC_C; tft_Write_8(0x28); DC_D; tft_Write_8(0x3C);
DC_C; tft_Write_8(0x01); DC_D; tft_Write_8(0x00);

DC_C; tft_Write_8(0x16); DC_D; tft_Write_8(0xA8);
DC_C; tft_Write_8(0x02); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x03); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x04); DC_D; tft_Write_8(0x01);
DC_C; tft_Write_8(0x05); DC_D; tft_Write_8(0x3F);
DC_C; tft_Write_8(0x06); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x07); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x08); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x09); DC_D; tft_Write_8(0xEF);

spi_end();
}

void setRotation(uint8_t rotation){

rotation = m % 4; // Limit the range of values to 0-3
spi_begin();
switch(rotation){
case 0:
DC_C; tft_Write_8(0x16); DC_D; tft_Write_8(0x08);
DC_C; tft_Write_8(0x04); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x05); DC_D; tft_Write_8(0xEF);
DC_C; tft_Write_8(0x08); DC_D; tft_Write_8(0x01);
DC_C; tft_Write_8(0x09); DC_D; tft_Write_8(0x3F);
_width = _init_width;
_height = _init_height;
break;
case 1:
DC_C; tft_Write_8(0x16); DC_D; tft_Write_8(0xA8);
DC_C; tft_Write_8(0x04); DC_D; tft_Write_8(0x01);
DC_C; tft_Write_8(0x05); DC_D; tft_Write_8(0x3F);
DC_C; tft_Write_8(0x08); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x09); DC_D; tft_Write_8(0xEF);
_width = _init_height;
_height = _init_width;
break;
case 2:
DC_C; tft_Write_8(0x16); DC_D; tft_Write_8(0xC8);
DC_C; tft_Write_8(0x04); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x05); DC_D; tft_Write_8(0xEF);
DC_C; tft_Write_8(0x08); DC_D; tft_Write_8(0x01);
DC_C; tft_Write_8(0x09); DC_D; tft_Write_8(0x3F);
_width = _init_width;
_height = _init_height;
break;
case 3:
DC_C; tft_Write_8(0x16); DC_D; tft_Write_8(0x68);
DC_C; tft_Write_8(0x04); DC_D; tft_Write_8(0x01);
DC_C; tft_Write_8(0x05); DC_D; tft_Write_8(0x3F);
DC_C; tft_Write_8(0x08); DC_D; tft_Write_8(0x00);
DC_C; tft_Write_8(0x09); DC_D; tft_Write_8(0xEF);
_width = _init_height;
_height = _init_width;
break;
}
spi_end();
}

[moononournation]

I did not have this display in hand, but welcome you contribute a pull request.

[liuquanli1970]

Thank you for your prompt reply. also thank you for your effective Arduino GFX library. Your work is very meaningful and I greatly admire it.
HX8347G is an older LCD model that was widely used in some early devices(usually with SPI resistive touch screens).
I have some HX8347G LCD in hand, and I can help with testing and provide feedback on test results， If you can add this driver to the GFX library.
Thanks again.

[liuquanli1970]

I use HX8347C driver, and the LCD can also work, but the color is reversed and (invertdisplay() does not work), and the left and right are mirrored displays.

[liuquanli1970]

HX8347G is perfectly supported, I have made the following changes：

1.Added ”#include“ in the “Arduino_GFX_Library.h”
#include "display/Arduino_HX8347G.h"

2.Two files were created “Arduino_HX8347G.h” and "Arduino_HX8347G.cpp" according to HX8347C
Modified the following two functions:

void Arduino_HX8347G::tftInit()
{
if (_rst != GFX_NOT_DEFINED)
{
pinMode(_rst, OUTPUT);
digitalWrite(_rst, HIGH);
delay(100);
digitalWrite(_rst, LOW);
delay(HX8347G_RST_DELAY);
digitalWrite(_rst, HIGH);
delay(HX8347G_RST_DELAY);
}
else
{
// Software Rest
}

// LCD Init For 3.0inch LCD Panel with HX8347G.
// Power Voltage Setting
_bus->sendCommand(0xEA); _bus->sendData(0x00);
_bus->sendCommand(0xEB); _bus->sendData(0x20);
_bus->sendCommand(0xEC); _bus->sendData(0x0C);
_bus->sendCommand(0xED); _bus->sendData(0xC4);
_bus->sendCommand(0xE8); _bus->sendData(0x40);
_bus->sendCommand(0xE9); _bus->sendData(0x38);
_bus->sendCommand(0x27); _bus->sendData(0xA3);
_bus->sendCommand(0x40); _bus->sendData(0x01);

_bus->sendCommand(0x41); _bus->sendData(0x00);
_bus->sendCommand(0x42); _bus->sendData(0x00);
_bus->sendCommand(0x43); _bus->sendData(0x10);
_bus->sendCommand(0x44); _bus->sendData(0x0E);
_bus->sendCommand(0x45); _bus->sendData(0x24);
_bus->sendCommand(0x46); _bus->sendData(0x04);
_bus->sendCommand(0x47); _bus->sendData(0x50);
_bus->sendCommand(0x48); _bus->sendData(0x02);

_bus->sendCommand(0x49); _bus->sendData(0x13);
_bus->sendCommand(0x4A); _bus->sendData(0x19);
_bus->sendCommand(0x4B); _bus->sendData(0x19);
_bus->sendCommand(0x4C); _bus->sendData(0x16);
_bus->sendCommand(0x50); _bus->sendData(0x1B);
_bus->sendCommand(0x51); _bus->sendData(0x31);
_bus->sendCommand(0x52); _bus->sendData(0x2F);
_bus->sendCommand(0x53); _bus->sendData(0x3F);

_bus->sendCommand(0x54); _bus->sendData(0x3F);
_bus->sendCommand(0x55); _bus->sendData(0x3E);
_bus->sendCommand(0x56); _bus->sendData(0x2F);
_bus->sendCommand(0x57); _bus->sendData(0x7B);
_bus->sendCommand(0x58); _bus->sendData(0x09);
_bus->sendCommand(0x59); _bus->sendData(0x06);
_bus->sendCommand(0x5A); _bus->sendData(0x06);
_bus->sendCommand(0x5B); _bus->sendData(0x0C);

_bus->sendCommand(0x5C); _bus->sendData(0x1D);
_bus->sendCommand(0x5D); _bus->sendData(0xCC);
_bus->sendCommand(0x1B); _bus->sendData(0x1B);
_bus->sendCommand(0x1A); _bus->sendData(0x01);
_bus->sendCommand(0x24); _bus->sendData(0x98);
_bus->sendCommand(0x25); _bus->sendData(0x57);
_bus->sendCommand(0x23); _bus->sendData(0x40);
_bus->sendCommand(0x18); _bus->sendData(0x36);

_bus->sendCommand(0x19); _bus->sendData(0x01);
_bus->sendCommand(0x1C); _bus->sendData(0x06);
_bus->sendCommand(0x1F); _bus->sendData(0x90);
delay(10);
_bus->sendCommand(0x17); _bus->sendData(0x05);
_bus->sendCommand(0x36); _bus->sendData(0x08);
_bus->sendCommand(0x28); _bus->sendData(0x38);
delay(60);
_bus->sendCommand(0x28); _bus->sendData(0x3C);
_bus->sendCommand(0x01); _bus->sendData(0x00);

_bus->sendCommand(0x16); _bus->sendData(0xA8);
_bus->sendCommand(0x02); _bus->sendData(0x00);
_bus->sendCommand(0x03); _bus->sendData(0x00);
_bus->sendCommand(0x04); _bus->sendData(0x01);
_bus->sendCommand(0x05); _bus->sendData(0x3F);
_bus->sendCommand(0x06); _bus->sendData(0x00);
_bus->sendCommand(0x07); _bus->sendData(0x00);
_bus->sendCommand(0x08); _bus->sendData(0x00);
_bus->sendCommand(0x09); _bus->sendData(0xEF);
}

void Arduino_HX8347G::setRotation(uint8_t r)
{
Arduino_TFT::setRotation(r);
switch (_rotation)
{
case 1:
_bus->sendCommand(0x16); _bus->sendData(0xA8);
_bus->sendCommand(0x04); _bus->sendData(0x01);
_bus->sendCommand(0x05); _bus->sendData(0x3F);
_bus->sendCommand(0x08); _bus->sendData(0x00);
_bus->sendCommand(0x09); _bus->sendData(0xEF);
break;
case 2:
_bus->sendCommand(0x16); _bus->sendData(0xC8);
_bus->sendCommand(0x04); _bus->sendData(0x00);
_bus->sendCommand(0x05); _bus->sendData(0xEF);
_bus->sendCommand(0x08); _bus->sendData(0x01);
_bus->sendCommand(0x09); _bus->sendData(0x3F);
break;
case 3:
_bus->sendCommand(0x16); _bus->sendData(0x68);
_bus->sendCommand(0x04); _bus->sendData(0x01);
_bus->sendCommand(0x05); _bus->sendData(0x3F);
_bus->sendCommand(0x08); _bus->sendData(0x00);
_bus->sendCommand(0x09); _bus->sendData(0xEF);
break;
default: // case 0:
_bus->sendCommand(0x16); _bus->sendData(0x08);
_bus->sendCommand(0x04); _bus->sendData(0x00);
_bus->sendCommand(0x05); _bus->sendData(0xEF);
_bus->sendCommand(0x08); _bus->sendData(0x01);
_bus->sendCommand(0x09); _bus->sendData(0x3F);
break;
}
}

3. Arduino_GFX *gfx =new Arduino_HX8347G();

Thank you again for your work！