STM32F1Demo

The size is only the size of a U disk. Onboard resources: 1.14 IPS TFT+TF card+MIC+Audio (DAC implementation, onboard power amplifier)+RGB LED+2*key+NorFlash+USB+CH340. Unfortunately, the onboard MCU The memory cannot be transplanted to LVGL, but it is sufficient as a verification LCD board and can also be used as a small portable toy (the playability is improved after Lua is transplanted). A COCOPI project will be open sourced in the future. This project uses the Cortex-A7 core and the chip uses the Allwinner V3s solution. It is also a very mini board with a 1.14-inch LCD onboard.

Here is a simple attachment of the 1.14-inch IPS TFT initialization code:

void TFT_init(void)
{
        TFT_GPIOinit();
        LCD_BL_H;
        LCD_RST_L;
        Delay(20);
        LCD_RST_H;
        LCD_Write_COM(0x11);//Sleep exit 
        Delay(12);
        LCD_Write_COM(0x11); 
        Delay(10);
        LCD_Write_COM(0x3A);        //65k mode
        LCD_Write_DATA(0x05);
        LCD_Write_COM(0xC5);        //VCOM
        LCD_Write_DATA(0x1A);
        LCD_Write_COM(0x36);                 // 屏幕显示方向设置
        LCD_Write_DATA(0x70);                //改变该值可以旋转方向  0x00 0x70 0xa0 0xc0
        //-------------ST7789V Frame rate setting-----------//
        LCD_Write_COM(0xb2);
        LCD_Write_DATA(0x05);
        LCD_Write_DATA(0x05);
        LCD_Write_DATA(0x00);
        LCD_Write_DATA(0x33);
        LCD_Write_DATA(0x33);

        LCD_Write_COM(0xb7);
        LCD_Write_DATA(0x35);
        //--------------ST7789V Power setting---------------//
        LCD_Write_COM(0xBB);//VCOM
        LCD_Write_DATA(0x3F);

        LCD_Write_COM(0xC0); //Power control
        LCD_Write_DATA(0x2c);

        LCD_Write_COM(0xC2);
        LCD_Write_DATA(0x01);

        LCD_Write_COM(0xC3);
        LCD_Write_DATA(0x0F);//0D        gvdd

        LCD_Write_COM(0xC4);
        LCD_Write_DATA(0x20);

        LCD_Write_COM(0xC6);
        LCD_Write_DATA(0X11);//0x0F

        LCD_Write_COM(0xd0);
        LCD_Write_DATA(0xa4);
        LCD_Write_DATA(0xa1);

        LCD_Write_COM(0xE8);
        LCD_Write_DATA(0x03);

        LCD_Write_COM(0xE9);
        LCD_Write_DATA(0x09);
        LCD_Write_DATA(0x09);
        LCD_Write_DATA(0x08);
        //---------------ST7789V gamma setting-------------//
        LCD_Write_COM(0xE0); //Set Gamma
        LCD_Write_DATA(0xD0);
        LCD_Write_DATA(0x05);
        LCD_Write_DATA(0x09);
        LCD_Write_DATA(0x09);
        LCD_Write_DATA(0x08);
        LCD_Write_DATA(0x14);
        LCD_Write_DATA(0x28);
        LCD_Write_DATA(0x33);
        LCD_Write_DATA(0x3F);
        LCD_Write_DATA(0x07);
        LCD_Write_DATA(0x13);
        LCD_Write_DATA(0x14);
        LCD_Write_DATA(0x28);
        LCD_Write_DATA(0x30);

        LCD_Write_COM(0XE1); //Set Gamma
        LCD_Write_DATA(0xD0);
        LCD_Write_DATA(0x05);
        LCD_Write_DATA(0x09);
        LCD_Write_DATA(0x09);
        LCD_Write_DATA(0x08);
        LCD_Write_DATA(0x03);
        LCD_Write_DATA(0x24);
        LCD_Write_DATA(0x32);
        LCD_Write_DATA(0x32);
        LCD_Write_DATA(0x3B);
        LCD_Write_DATA(0x14);
        LCD_Write_DATA(0x13);
        LCD_Write_DATA(0x28);
        LCD_Write_DATA(0x2F);

        LCD_Write_COM(0x21); //反显

        LCD_Write_COM(0x11);
        Delay(120);      //Delay 120ms

        LCD_Write_COM(0x29);
            DisplayWindow(0,0,240,135,0x001f); //刷新蓝色
}

Note that there is an offset in the brush function below:

void DisplayWindow(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2,unsigned int color)
{
    x1+=40;y1+=53;
    x2+=40;y2+=53;

    LCD_Write_COM(0x2a); 
    LCD_Write_DATA(x1>>8);
    LCD_Write_DATA(x1);
    unsigned int i,j;

    LCD_Write_DATA(x2>>8);
    LCD_Write_DATA(x2);
    LCD_Write_COM(0x2b); 
    LCD_Write_DATA(y1>>8);
    LCD_Write_DATA(y1);
    LCD_Write_DATA(y2>>8);
    LCD_Write_DATA(y2);
      LCD_Write_COM(0x2c);
        for(j=y1;j<=y2;j++)c
            for(i=x1;i<=x2;i++)
            {
                LCD_Write_DATA(color>>8);v
                LCD_Write_DATA(color);
            }
}