C51驱动5寸RA8870液晶初始化代码

曾经最美 · 发表于 2016-5-8 23:10:40

#include"reg52.h"
#define uchar unsigned char
#define uint unsigned int
void Delay100ms(uchar Counter);
void Delay10ms(uchar Counter);
void Delay1ms(uchar Counter);
void Delay100us(uchar Counter);
void Delay2us(uchar Counter);
void Chk_Busy(void);
sbit LCD_RS=P3^0;
sbit LCD_CS=P3^1;
sbit LCD_WR=P3^2;
sbit LCD_RST=P3^3;
sbit LED_EN=P3^6;
sbit LCD_RD=P3^7;
unsigned char DATA_BUS ;

//#define DATA_BUS P1

// ========== MCU Cycle ===========
void LCD_CmdWrite(uchar cmd) // Command Write
{
      LCD_CS = 0;
      LCD_RS = 1;
      Delay10ms(1);
      LCD_WR = 0;
      Delay10ms(1);
      P1= cmd;

      LCD_WR = 0;
      Delay10ms(1);
      LCD_WR = 1;

      Delay10ms(1);
      LCD_CS = 1;

//       P1 = 0xff;
}
void LCD_DataWrite(uchar Data) // Data Write
{
      LCD_CS = 0;
      LCD_RS = 0;
      Delay10ms(1);

      Delay10ms(1);
      P1= Data;
      LCD_WR = 0;
      Delay10ms(1);
      LCD_WR = 1;

      Delay10ms(1);
      LCD_CS = 1;

//       P1 = 0xff;
}
      uchar LCD_StatusRead(void) // Read Status Register
      { 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;
}

// ========== RA8870 初始化 ===========

void LCD_Initial(void)
{
      LCD_CmdWrite(0x01);
      LCD_DataWrite(0x00);  // 关闭显示
//       Delay10ms(1);
      P2=0X7F;
      LCD_CmdWrite(0x88);
      LCD_DataWrite(0x8F);       // SYS_CLK=.......
//       Delay10ms(1);
      P2=0XFE;
      LCD_CmdWrite(0x89);
      LCD_DataWrite(0x03);
//       Delay10ms(1);
      P2=0XD;
      LCD_CmdWrite(0x04);
      LCD_DataWrite(0x01);// PCLK频率=SYS_CLK/((2^(0+1))*(2^n))=
//       Delay10ms(1) ;
      P2=0XFB;
      LCD_CmdWrite(0x01);
      LCD_DataWrite(0x01);
//       Delay10ms(1);
      P2=0XF7;
      LCD_CmdWrite(0x01);
      LCD_DataWrite(0x00);    //进行一次软复位，使频率设置有效。
//       Delay10ms(1);
      P2=0XEF;
      LCD_CmdWrite(0x10);
      LCD_DataWrite(0x3C);    //使用外部RAM，65K色，8位数据口。
//       Delay10ms(1);
      P2=0XDF;
      LCD_CmdWrite(0x11);
      LCD_DataWrite(0x00);       // RGB格式LCD_CmdWrite(0x88);
//       Delay10ms(1);
      P2=0XBF;
      LCD_CmdWrite(0x12);
      LCD_DataWrite(0x00);
//       Delay10ms(1);
      P2=0X7F;
      LCD_CmdWrite(0x13);
      LCD_DataWrite(0x00);
//       Delay10ms(1);
      P2=0XFE;
      //_______水平设置    _____
      LCD_CmdWrite(0x14);
      LCD_DataWrite(0x3B);       //480列
//       Delay10ms(1);
      P2=0XFD;
      LCD_CmdWrite(0x15);
      LCD_DataWrite(0x04);
//       Delay10ms(1);
      P2=0XFB;
      LCD_CmdWrite(0x16);
      LCD_DataWrite(0x05);       //水平非显示区域
      Delay10ms(1);
      P2=0XF7;
      LCD_CmdWrite(0x17);
      LCD_DataWrite(0x02);       // HSYNC 开始位置
//       Delay10ms(1);
      P2=0XEF;
      LCD_CmdWrite(0x18);
      LCD_DataWrite(0x01);       //HSYNC 脉宽
//       Delay10ms(1);
      P2=0XDF;
      //___________ 垂直设置 ______________
      LCD_CmdWrite(0x19);
      LCD_DataWrite(0x0F);
//       Delay10ms(1);
      P2=0XBF;
      LCD_CmdWrite(0x1A);
      LCD_DataWrite(0x01);       //272行
//       Delay10ms(1);
      P2=0X7F;
      LCD_CmdWrite(0x1B);
      LCD_DataWrite(0x09);
//       Delay10ms(1);
      P2=0XFE;
      LCD_CmdWrite(0x1C);
      LCD_DataWrite(0x00);       //垂直非显示区域
//       Delay10ms(1);
      P2=0XFD;

      LCD_CmdWrite(0x1D);
      LCD_DataWrite(0x05);
//       Delay10ms(1);
      P2=0XFB;
      LCD_CmdWrite(0x1E);
      LCD_DataWrite(0x00);       //VSYNC 开始位置
//       Delay10ms(1);
      P2=0XF7;
      LCD_CmdWrite(0x1F);
      LCD_DataWrite(0x02);       //VSYNC 脉宽
//       Delay10ms(1);
      P2=0XEF;
            // ___________  有效工作窗口 ________
      LCD_CmdWrite(0x30);
      LCD_DataWrite(0x00);
//       Delay10ms(1);
      P2=0XDF;
      LCD_CmdWrite(0x31);
      LCD_DataWrite(0x00);       //从第一列开始
//       Delay10ms(1);
      P2=0XBF;
      LCD_CmdWrite(0x34);
      LCD_DataWrite(0xDF);
//       Delay10ms(1);
      P2=0X7F;
      LCD_CmdWrite(0x35);
      LCD_DataWrite(0x01);       //01DF=480。
//       Delay10ms(1);
      P2=0XFE;

      LCD_CmdWrite(0x32);
      LCD_DataWrite(0x00);
//       Delay10ms(1);
      P2=0XFD;
      LCD_CmdWrite(0x33);
      LCD_DataWrite(0x00);       //从第一行开始
//       Delay10ms(1);
      P2=0XFB;
      LCD_CmdWrite(0x36);
      LCD_DataWrite(0x0F);
//       Delay10ms(1);
      P2=0XF7;
      LCD_CmdWrite(0x37);
      LCD_DataWrite(0x01);    //010F =272行
//       Delay10ms(1);
      P2=0XEF;
      LCD_CmdWrite(0x01);
      LCD_DataWrite(0x80);    //打开显示
//       Delay100ms(1)       ;
      P2=0XDF;
      LCD_CmdWrite(0x40);
      LCD_DataWrite(0x00);
//       Delay100ms(1)       ;
      P2=0XBF;
//       Delay100ms(10)       ;
      P2=0X00;
}
// ========== 读忙（Check Busy ）子程序 ===========
void Chk_Busy(void)
{
//uchar temp;
do
{
//temp=LCD_StatusRead();
//}while((temp&0x80)==0x80);
} while(LCD_StatusRead()&0x80);
}

// ========== 延迟（Delay ）子程序 ===========
void Delay2us(uchar Counter)
{ while(--Counter);
}
void Delay100us(uchar Counter)
{ while(Counter--)
{ Delay2us(100); }
}
void Delay1ms(uchar Counter)
{ while(Counter--)
{ Delay100us(11); }
}
void Delay10ms(uchar Counter)
{ while(Counter--)
{ Delay1ms(11); }
}
void Delay100ms(uchar Counter)
{ while(Counter--)
{ Delay1ms(101); }
}
               //================== main process start ==================//
void main(void)
{
//       LCD_Reset(); // 对RA8870 重致

      LCD_RST = 0;
      Delay100ms(1);
      LCD_RST = 1;
      Delay100ms(1);
      LCD_Initial();
      while(1)
            {       P2=0X0F;
//                      LCD_Initial();

            }

}

人家用汇编在W78E516DDG上写的初始化，我把改成STC90C516RD+上的，怎么就初始化不了，数据端口和命令端口输入输出都正确，有谁能帮我分析一下原因呢？先谢谢