realtouch中lcd显示字符的疑问

发布于 2012-12-22 14:39:33 浏览：4668 订阅该版

在LCD_Initial函数中，```//AT070TN92  setting
//==============	Display Window	800x480 ==================
    LCD_CmdWrite(0x04);  //PCLK inverse
    LCD_DataWrite(0x81);    //pclk = sys_clk/2;
    Delay1ms(1);

//Horizontal set
    LCD_CmdWrite(0x14); //HDWR//Horizontal Display Width Setting Bit[6:0]
    LCD_DataWrite(0x63);//Horizontal display width(pixels) = (HDWR + 1)*8
    LCD_CmdWrite(0x15);//Horizontal Non-Display Period Fine Tuning Option Register (HNDFTR)
    LCD_DataWrite(0x03);//Horizontal Non-Display Period Fine Tuning(HNDFT) [3:0]
    LCD_CmdWrite(0x16); //HNDR//Horizontal Non-Display Period Bit[4:0]
    LCD_DataWrite(0x03);//Horizontal Non-Display Period (pixels) = (HNDR + 1)*8
    LCD_CmdWrite(0x17); //HSTR//HSYNC Start Position[4:0]
    LCD_DataWrite(0x02);//HSYNC Start Position(PCLK) = (HSTR + 1)*8
    LCD_CmdWrite(0x18); //HPWR//HSYNC Polarity ,The period width of HSYNC.
    LCD_DataWrite(0x00);//HSYNC Width [4:0]   HSYNC Pulse width(PCLK) = (HPWR + 1)*8

//Vertical set
    LCD_CmdWrite(0x19); //VDHR0 //Vertical Display Height Bit [7:0]
    LCD_DataWrite(0xdf);//Vertical pixels = VDHR + 1
    LCD_CmdWrite(0x1a); //VDHR1 //Vertical Display Height Bit [8]
    LCD_DataWrite(0x01);//Vertical pixels = VDHR + 1
    LCD_CmdWrite(0x1b); //VNDR0 //Vertical Non-Display Period Bit [7:0]
    LCD_DataWrite(0x14);//Vertical Non-Display area = (VNDR + 1)
    LCD_CmdWrite(0x1c); //VNDR1 //Vertical Non-Display Period Bit [8]
    LCD_DataWrite(0x00);//Vertical Non-Display area = (VNDR + 1)
    LCD_CmdWrite(0x1d); //VSTR0 //VSYNC Start Position[7:0]
    LCD_DataWrite(0x06);//VSYNC Start Position(PCLK) = (VSTR + 1)
    LCD_CmdWrite(0x1e); //VSTR1 //VSYNC Start Position[8]
    LCD_DataWrite(0x00);//VSYNC Start Position(PCLK) = (VSTR + 1)
    LCD_CmdWrite(0x1f); //VPWR //VSYNC Polarity ,VSYNC Pulse Width[6:0]
    LCD_DataWrite(0x01);//VSYNC Pulse Width(PCLK) = (VPWR + 1)```
这些配置都是怎么来的，根据什么来配置
![图2.png](https://oss-club.rt-thread.org/uploads/5338_531747d48fe88dd7f91f55903b4622d3.png)

![图1.png](https://oss-club.rt-thread.org/uploads/5338_66126add5ce1989f560cacbbbf99e14b.png)