液晶屏中初始化函数的疑问

螃蟹爱虫 · 发表于 2011-10-12 20:40:55

我用的液晶屏驱动IC是ILI9325,用原子哥的TFT显示实验是没问题的，只是对初始化有些疑问，请高人解答，不甚感激，如下：
疑问：
  LCD_WriteReg(0x00e7,0x0010);
LCD_WriteReg(0x0093,0x0003);
LCD_WriteReg(0x009７,0x0110);
LCD_WriteReg(0x009８,0x0110);

看ILI9325的DATASHEET,里面是没有Re7,R93,R97,R98这几个命令的，不知原子哥用用在这里是何用意？请帮忙看一下，谢谢。

if(DeviceCode==0x9325||DeviceCode==0x9328)//ILI9325
{
  LCD_WriteReg(0x00e7,0x0010);
        LCD_WriteReg(0x0000,0x0001);//开启内部时钟
        LCD_WriteReg(0x0001,0x0100);
        LCD_WriteReg(0x0002,0x0700);//电源开启
  //LCD_WriteReg(0x0003,(1<<3)|(1<<4) ); //65K RGB
  //DRIVE TABLE(寄存器 03H)
  //BIT3=AM BIT4:5=ID0:1
  //AM ID0 ID1   FUNCATION
  // 0 0   0    R->L D->U
  // 1 0   0    D->U R->L
  // 0 1   0    L->R D->U
  // 1 1   0    D->U L->R
  // 0 0   1    R->L U->D
  // 1 0   1    U->D R->L
  // 0 1   1    L->R U->D 正常就用这个.
  // 1 1   1    U->D L->R
        LCD_WriteReg(0x0003,(1<<12)|(3<<4)|(0<<3) );//65K
        LCD_WriteReg(0x0004,0x0000);
        LCD_WriteReg(0x0008,0x0207);
        LCD_WriteReg(0x0009,0x0000);
        LCD_WriteReg(0x000a,0x0000);//display setting
        LCD_WriteReg(0x000c,0x0001);//display setting
        LCD_WriteReg(0x000d,0x0000);//0f3c
        LCD_WriteReg(0x000f,0x0000);
  //电源配置
        LCD_WriteReg(0x0010,0x0000);
        LCD_WriteReg(0x0011,0x0007);
        LCD_WriteReg(0x0012,0x0000);
        LCD_WriteReg(0x0013,0x0000);
        delay_ms(50);
        LCD_WriteReg(0x0010,0x1590);
        LCD_WriteReg(0x0011,0x0227);
        delay_ms(50);
        LCD_WriteReg(0x0012,0x009c);
        delay_ms(50);
        LCD_WriteReg(0x0013,0x1900);
        LCD_WriteReg(0x0029,0x0023);
        LCD_WriteReg(0x002b,0x000e);
        delay_ms(50);
        LCD_WriteReg(0x0020,0x0000);
        LCD_WriteReg(0x0021,0x013f);
  delay_ms(50);
  //伽马校正
        LCD_WriteReg(0x0030,0x0007);
        LCD_WriteReg(0x0031,0x0707);
        LCD_WriteReg(0x0032,0x0006);
        LCD_WriteReg(0x0035,0x0704);
        LCD_WriteReg(0x0036,0x1f04);
        LCD_WriteReg(0x0037,0x0004);
        LCD_WriteReg(0x0038,0x0000);
        LCD_WriteReg(0x0039,0x0706);
        LCD_WriteReg(0x003c,0x0701);
        LCD_WriteReg(0x003d,0x000f);
        delay_ms(50);
        LCD_WriteReg(0x0050,0x0000); //水平GRAM起始位置
        LCD_WriteReg(0x0051,0x00ef); //水平GRAM终止位置
        LCD_WriteReg(0x0052,0x0000); //垂直GRAM起始位置
        LCD_WriteReg(0x0053,0x013f); //垂直GRAM终止位置

        LCD_WriteReg(0x0060,0xa700);
        LCD_WriteReg(0x0061,0x0001);
        LCD_WriteReg(0x006a,0x0000);
        LCD_WriteReg(0x0080,0x0000);
        LCD_WriteReg(0x0081,0x0000);
        LCD_WriteReg(0x0082,0x0000);
        LCD_WriteReg(0x0083,0x0000);
        LCD_WriteReg(0x0084,0x0000);
        LCD_WriteReg(0x0085,0x0000);

        LCD_WriteReg(0x0090,0x0010);
        LCD_WriteReg(0x0092,0x0000);
        LCD_WriteReg(0x0093,0x0003);
        LCD_WriteReg(0x0095,0x0110);
        LCD_WriteReg(0x0097,0x0000);
        LCD_WriteReg(0x0098,0x0000);
        //开启显示设置
        LCD_WriteReg(0x0007,0x0133);
        LCD_WriteReg(0x0020,0x0000);
        LCD_WriteReg(0x0021,0x013f);
}