STC12C5A60S2 RA8875 {MOD}彩显示错误问题-lgr的回答

STC12C5A60S2 RA8875 {MOD}彩显示错误问题

2019-03-24 17:13发布

我的板子显示三基 {MOD}正常，但显示别的 {MOD}彩时显示错误。选用8位接口16 {MOD}彩。
东华4.3寸彩屏。
有空一起研究的请看下面代码如下：

RA8875驱动：
#include"STC12C5A60S2.H"
#include "RA8875.h"

/*************************** 延时子函数 ****************************/
void delay_ms(uint ms)
{
uchar k;
while (ms--)
{
   for (k = 0; k <125; k++);
}
}
/********************* RA8875 写指令函数 **************************/
void LCD_CmdWrite(uchar Cmd) //8080模式
{
LCD_rd = 1;
LCD_cs = 0;
LCD_rs = 1;
DATA_BUS = Cmd;
LCD_wr = 0;
LCD_wr = 1;
LCD_cs= 1;
DATA_BUS = 0xff;
LCD_rs = 0;
/*
LCD_rs = 1;
LCD_cs = 0;
LCD_wr = 0;
LCD_rd = 1;
DATA_BUS = Cmd;
LCD_wr = 1;
LCD_cs = 1;
DATA_BUS = 0xff;
LCD_rs = 0;
*/
}
/********************* RA8875 写数据函数 **************************/
void LCD_DataWrite(uchar Data) //8080模式
{
LCD_rd = 1;
LCD_cs = 0;
LCD_rs = 0;
DATA_BUS = Data;
LCD_wr = 0;
LCD_wr = 1;
LCD_cs = 1;
DATA_BUS = 0xff;
LCD_rs = 1;
/*
LCD_rs = 0;
LCD_cs = 0;
LCD_wr = 0;
LCD_rd = 1;
DATA_BUS = Data;
LCD_wr = 1;
LCD_cs = 1;
DATA_BUS = 0xff;
LCD_rs = 1;
*/
}
/********************* RA8875 写指令和写数据函数 **************************/
void Write_Dir(uchar Cmd,uchar Data)
{
LCD_CmdWrite(Cmd);
LCD_DataWrite(Data);
}
/********************* RA8875 读状态函数 **************************/
uchar LCD_StatusRead(void)    //8080模式
{
uchar Data;
LCD_cs = 0;
LCD_rs = 1;
LCD_wr = 1;
LCD_rd = 0;
Data = DATA_BUS;
LCD_rd = 1;
LCD_cs = 1;
DATA_BUS = 0xff;
LCD_rs = 0;
return Data;
}
/********************* RA8875 读数据函数 **************************/
uchar LCD_DataRead(void)    //8080模式
{
uchar Data;
LCD_wr = 1;
LCD_cs = 0;
LCD_rs = 0;
LCD_rd = 0;
Data = DATA_BUS;
LCD_rd = 1;
LCD_cs = 1;
LCD_rs = 1;
return Data;
}
/********************* RA8875 复位函数 **************************/
void LCD_Reset(void)
{
LCD_RST = 1;
delay_ms(5);
LCD_RST = 0;
delay_ms(5);
LCD_RST = 1;
delay_ms(5);
}
/********************* RA8875 倍频设置函数 **************************/
void PLL_ini(void)
{
   LCD_CmdWrite(0x88);
   LCD_DataWrite(0x05);
   delay_ms(1);
   LCD_CmdWrite(0x89);
   LCD_DataWrite(0x02);
   delay_ms(1);
}
/********************* RA8875 测忙函数组 **************************/
void Chk_Busy(void)
{
uchar temp;
do
{
   temp=LCD_StatusRead();
}
   while((temp&0x80)==0x80);
}
/*void Chk_BTE_Busy(void)
{
uchar temp;
do
{
temp=LCD_StatusRead();
}
while((temp&0x40)==0x40);
}
void Chk_DMA_Busy(void)
{
uchar temp;
do
{
LCD_CmdWrite(0xBF);
temp =LCD_DataRead();
}
while((temp&0x01)==0x01);
}
/********************************* RA8875 初始化函数 *************************************/
void LCD_Initial(void)
{
   PLL_ini();
LCD_CmdWrite(0x10);    //SYSR bit[4:3]=00 256 color  bit[2:1]=  00 8bit MPU interface
LCD_DataWrite(0x0C);    //1x 64k color  1x 16bit
delay_ms(1);
LCD_CmdWrite(0x04);    //PCLK
LCD_DataWrite(0x82);    //
delay_ms(1);

//Horizontal set
LCD_CmdWrite(0x14);  //HDWR//Horizontal Display Width Setting Bit[6:0]
LCD_DataWrite(0x3b); //Horizontal display width(pixels) = (HDWR + 1)*8    0x27
LCD_CmdWrite(0x15);  //HNDFCR//Horizontal Non-Display Period fine tune Bit[3:0]
LCD_DataWrite(0x02); //(HNDR + 1)*8 +HNDFCR
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(0x01); //HSYNC Start Position(PCLK) = (HSTR + 1)*8
LCD_CmdWrite(0x18);  //HPWR//HSYNC Polarity ,The period width of HSYNC.
LCD_DataWrite(0x03); //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(0x0f); //Vertical pixels = VDHR + 1 0xef
LCD_CmdWrite(0x1a); //VDHR1 //Vertical Display Height Bit [8]
LCD_DataWrite(0x01); //Vertical pixels = VDHR + 1  0x00
LCD_CmdWrite(0x1b); //VNDR0 //Vertical Non-Display Period Bit [7:0]
LCD_DataWrite(0x0F); //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(0x0e); //VSYNC Start Position(PCLK) = (VSTR + 1)
LCD_CmdWrite(0x1e); //VSTR1 //VSYNC Start Position[8]
LCD_DataWrite(0x06); //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)

LCD_CmdWrite(0x8C); //PWM2 控制设置
LCD_DataWrite(0x80); //开启PWM2
LCD_CmdWrite(0x8C); //PWM2 控制设置
LCD_DataWrite(0x81); //开启PWM2
LCD_CmdWrite(0x8D); //背光亮度
LCD_DataWrite(0x00); //亮度参数0xff-0x00
}

/********************************* 设置工作窗口区域 *************************************/
void Active_Window(uint XL,uint XR ,uint YT ,uint YB)
{
uchar temp;
   //setting active window X
temp=XL;
   LCD_CmdWrite(0x30);//HSAW0
LCD_DataWrite(temp);
temp=XL>>8;
   LCD_CmdWrite(0x31);//HSAW1
LCD_DataWrite(temp);
temp=XR;
   LCD_CmdWrite(0x34);//HEAW0
LCD_DataWrite(temp);
temp=XR>>8;
   LCD_CmdWrite(0x35);//HEAW1
LCD_DataWrite(temp);
   //setting active window Y
temp=YT;
   LCD_CmdWrite(0x32);//VSAW0
LCD_DataWrite(temp);
temp=YT>>8;
   LCD_CmdWrite(0x33);//VSAW1
LCD_DataWrite(temp);
temp=YB;
   LCD_CmdWrite(0x36);//VEAW0
LCD_DataWrite(temp);
temp=YB>>8;
   LCD_CmdWrite(0x37);//VEAW1
LCD_DataWrite(temp);
}
/********************************* 前景颜 {MOD}设置 *************************************/
void Text_Foreground_Color1(uint b_color)
{

LCD_CmdWrite(0x63);//BGCR0
LCD_DataWrite((uchar)(b_color>>11));

LCD_CmdWrite(0x64);//BGCR0
LCD_DataWrite((uchar)(b_color>>5));

LCD_CmdWrite(0x65);//BGCR0
LCD_DataWrite((uchar)(b_color));
}
/********************************* 背景颜 {MOD}设置 *************************************/
void Text_Background_Color1(uint b_color)
{

LCD_CmdWrite(0x60);//BGCR0
LCD_DataWrite((uchar)(b_color>>11));

LCD_CmdWrite(0x61);//BGCR0
LCD_DataWrite((uchar)(b_color>>5));

LCD_CmdWrite(0x62);//BGCR0
LCD_DataWrite((uchar)(b_color));
}

#include"STC12C5A60S2.H"
#include"RA8875.h"
uint tmp;
uint RGB(uchar R,uchar G,uchar B)
{
return((uint)(R&0XF8)<<8|(uint)(G&0XFC)<<3|(uint)(B&0XF8)>>3);
}
/**************************** 主函数 *******************************/
void main(void)
{
P0 = 0xff;
P1 = 0xff;
P2 = 0xff;
P3 = 0xff;
P4 = 0xff;
P4SW = 0xff;
LCD_Reset();    //复位RA8875
LCD_Initial();    //初始化RA8875
Write_Dir(0x01,0x80);          //开启显示
Active_Window(0,479,0,271);    //设置工作窗口大小
Text_Foreground_Color1(White); //前景颜 {MOD}设定
Text_Background_Color1(Blue);    //背景颜 {MOD}设定
Write_Dir(0x8E,0x80);          //开始清屏(显示窗口)

while(1)
   {
delay_ms(5000);
LCD_CmdWrite(0x8D); //背光亮度
LCD_DataWrite(0xff); //亮度参数0xff-0x00
delay_ms(5000);

Active_Window(0,479,0,271);//设置工作窗口大小
Text_Background_Color1(White);//背景颜 {MOD}设定
Write_Dir(0X8E,0X40);//设定清屏性质(工作窗口)
   Write_Dir(0X8E,0XC0);//开始清屏
Chk_Busy();

   delay_ms(5000);

   tmp = RGB(128,128,255); //分别输入888的R，G，B分量,转换成565的R，G，B分量.
   Active_Window(0,479,0,271);//设置工作窗口大小
Text_Background_Color1(tmp);//背景颜 {MOD}设定
Write_Dir(0X8E,0X40);//设定清屏性质(工作窗口)
   Write_Dir(0X8E,0XC0);//开始清屏
Chk_Busy();

   }
} 此帖出自小平头技术问答

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3条回答

lgr

2019-03-24 23:26

问题解决了！是RGB各高位和低高线路接反了！造成当三基 {MOD}之一全为高时红 {MOD}或绿 {MOD}或蓝 {MOD}都能正常显示，一但不是三基 {MOD}时TFT接收到的信号就不是正确的信号了。

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