求教，使用液晶的问题。控制器9325.

yangshuhe33

求教，使用液晶的问题。控制器9325.

打开电源，液晶为背光灯的颜色（白色）。
在主函数里面初始化过后，液晶变为灰色，然后再怎么写程序，也始终是这个样子。我把代码贴上来，就一个LCD.c文件。

#include"system.h"
#include <io.h>
#include<stdio.h>
#include <unistd.h>
#include <altera_avalon_pio_regs.h>
#include <alt_types.h>

void delayms(unsigned int time)
{
    int i;
    for(i=0;i<time;i++){
        usleep(1011);
    }
}

void LCD_Writ_Bus(alt_u16 dat)   //并行数据写入
{
    IOWR_ALTERA_AVALON_PIO_DIRECTION(DATA_BASE, 0xffff);//cmd out  
    IOWR_ALTERA_AVALON_PIO_DATA(DATA_BASE, dat);//dat     
    IOWR_ALTERA_AVALON_PIO_DATA(WR_BASE, 0);
    IOWR_ALTERA_AVALON_PIO_DATA(WR_BASE, 1);
}

void Lcd_Write_Com(alt_u16 index)  //发送命令
{   
    IOWR_ALTERA_AVALON_PIO_DATA(RS_BASE, 0);//rs=0
    LCD_Writ_Bus(index);
}

void Lcd_Write_Data(alt_u16 dat)    //发送数据
{
    IOWR_ALTERA_AVALON_PIO_DATA(RS_BASE, 1);//rs=1
    LCD_Writ_Bus(dat);
}

void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{
    Lcd_Write_Com(0x20);Lcd_Write_Data(x1);    //设置X坐标位置
    Lcd_Write_Com(0x21);Lcd_Write_Data(y1);   //设置Y坐标位置
    Lcd_Write_Com(0x50);Lcd_Write_Data(x1);   //开始X
    Lcd_Write_Com(0x52);Lcd_Write_Data(y1);    //开始Y
    Lcd_Write_Com(0x51);Lcd_Write_Data(x2);   //结束X
    Lcd_Write_Com(0x53);Lcd_Write_Data(y2);   //结束Y
    Lcd_Write_Com(0x22);                           
}

void Pant(alt_u16 dat)
{
    int i,j;
    IOWR_ALTERA_AVALON_PIO_DATA(CS_BASE, 0);//打开片选使能
    Address_set(0,0,240,320);
    for(i=0;i<320;i++)
     {
      for (j=0;j<240;j++)
        {
             Lcd_Write_Data(dat);
        }

      }
    IOWR_ALTERA_AVALON_PIO_DATA(CS_BASE, 1);//关闭片选使能
}

void Lcd_Init(void)
{               
    IOWR_ALTERA_AVALON_PIO_DATA(RESET_BASE, 1);
    delayms(5);
     IOWR_ALTERA_AVALON_PIO_DATA(RESET_BASE,0);
    delayms(5);
     IOWR_ALTERA_AVALON_PIO_DATA(RESET_BASE, 1);
     IOWR_ALTERA_AVALON_PIO_DATA(CS_BASE, 1);
     IOWR_ALTERA_AVALON_PIO_DATA(RD_BASE, 1);
     IOWR_ALTERA_AVALON_PIO_DATA(WR_BASE, 1);
    delayms(5);

     IOWR_ALTERA_AVALON_PIO_DATA(CS_BASE, 0);  //打开片选使能
    //************* Start Initial Sequence **********//
    Lcd_Write_Com(0xE5); Lcd_Write_Data((0x78<<8)+0xF0); // set SRAM internal timing
    Lcd_Write_Com(0x01); Lcd_Write_Data((0x01<<8)+0x00); // set SS and SM bit
    Lcd_Write_Com(0x02); Lcd_Write_Data((0x07<<8)+0x00); // set 1 line inversion
    Lcd_Write_Com(0x03); Lcd_Write_Data((0x10<<8)+0x30); // set GRAM write direction and BGR=1.
    Lcd_Write_Com(0x04); Lcd_Write_Data(0x0000); // Resize register
    Lcd_Write_Com(0x08); Lcd_Write_Data((0x02<<8)+0x07); // set the back porch and front porch
    Lcd_Write_Com(0x09); Lcd_Write_Data(0x0000); // set non-display area refresh cycle ISC[3:0]
    Lcd_Write_Com(0x0A); Lcd_Write_Data(0x0000); // FMARK function
    Lcd_Write_Com(0x0C); Lcd_Write_Data(0x0000); // RGB interface setting
    Lcd_Write_Com(0x0D); Lcd_Write_Data(0x0000); // Frame marker Position
    Lcd_Write_Com(0x0F); Lcd_Write_Data(0x0000); // RGB interface polarity
    //*************Power On sequence ****************//
    Lcd_Write_Com(0x10); Lcd_Write_Data(0x00); // SAP, BT[3:0], AP, DSTB, SLP, STB
    Lcd_Write_Com(0x11); Lcd_Write_Data(0x07); // DC1[2:0], DC0[2:0], VC[2:0]
    Lcd_Write_Com(0x12); Lcd_Write_Data(0x00); // VREG1OUT voltage
    Lcd_Write_Com(0x13); Lcd_Write_Data(0x00); // VDV[4:0] for VCOM amplitude
    Lcd_Write_Com(0x07); Lcd_Write_Data(0x01);
    delayms(50); // Dis-charge capacitor power voltage
    Lcd_Write_Com(0x0010); Lcd_Write_Data((0x10<<8)+0x90); // 1490//SAP, BT[3:0], AP, DSTB, SLP, STB
    Lcd_Write_Com(0x0011); Lcd_Write_Data((0x02<<8)+0x27); // DC1[2:0], DC0[2:0], VC[2:0]
    delayms(50); // Delay 50ms
    Lcd_Write_Com(0x0012); Lcd_Write_Data(0x001F); //001C// Internal reference voltage= Vci;
    delayms(50); // Delay 50ms
    Lcd_Write_Com(0x0013); Lcd_Write_Data((0x15<<8)+0x00); //0x1000//1400   Set VDV[4:0] for VCOM amplitude  1A00
    Lcd_Write_Com(0x0029); Lcd_Write_Data(0x0027); //0x0012 //001a  Set VCM[5:0] for VCOMH  //0x0025  0034
    Lcd_Write_Com(0x002B); Lcd_Write_Data(0x000D); // Set Frame Rate   000C
    delayms(50); // Delay 50ms
    Lcd_Write_Com(0x0020); Lcd_Write_Data(0x0000); // GRAM horizontal Address
    Lcd_Write_Com(0x0021); Lcd_Write_Data(0x0000); // GRAM Vertical Address
    // ----------- Adjust the Gamma Curve ----------//
    Lcd_Write_Com(0x0030); Lcd_Write_Data(0x0000);
    Lcd_Write_Com(0x0031); Lcd_Write_Data((0x07<<8)+0x07);
    Lcd_Write_Com(0x0032); Lcd_Write_Data((0x03<<8)+0x07);
    Lcd_Write_Com(0x0035); Lcd_Write_Data((0x02<<8)+0x00);
    Lcd_Write_Com(0x0036); Lcd_Write_Data(0x0008);//0207
    Lcd_Write_Com(0x0037); Lcd_Write_Data(0x0004);//0306
    Lcd_Write_Com(0x0038); Lcd_Write_Data(0x0000);//0102
    Lcd_Write_Com(0x0039); Lcd_Write_Data((0x07<<8)+0x07);//0707
    Lcd_Write_Com(0x003C); Lcd_Write_Data(0x0002);//0702
    Lcd_Write_Com(0x003D); Lcd_Write_Data((0x1D<<8)+0x04);//1604
   
    //------------------ Set GRAM area ---------------//
    Lcd_Write_Com(0x0050); Lcd_Write_Data(0x0000); // Horizontal GRAM Start Address
    Lcd_Write_Com(0x0051); Lcd_Write_Data(0x00EF); // Horizontal GRAM End Address
    Lcd_Write_Com(0x0052); Lcd_Write_Data(0x0000); // Vertical GRAM Start Address
    Lcd_Write_Com(0x0053); Lcd_Write_Data((0x01<<8)+0x3F); // Vertical GRAM Start Address
    Lcd_Write_Com(0x0060); Lcd_Write_Data((0xA7<<8)+0x00); // Gate Scan Line
    Lcd_Write_Com(0x0061); Lcd_Write_Data(0x0001); // NDL,VLE, REV
    Lcd_Write_Com(0x006A); Lcd_Write_Data(0x0000); // set scrolling line
    //-------------- Partial Display Control ---------//
    Lcd_Write_Com(0x0080); Lcd_Write_Data(0x0000);
    Lcd_Write_Com(0x0081); Lcd_Write_Data(0x0000);
    Lcd_Write_Com(0x0082); Lcd_Write_Data(0x0000);
    Lcd_Write_Com(0x0083); Lcd_Write_Data(0x0000);
    Lcd_Write_Com(0x0084); Lcd_Write_Data(0x0000);
    Lcd_Write_Com(0x0085); Lcd_Write_Data(0x0000);
    //-------------- Panel Control -------------------//
    Lcd_Write_Com(0x0090); Lcd_Write_Data(0x0010);
    Lcd_Write_Com(0x0092); Lcd_Write_Data((0x06<<8)+0x00);
    Lcd_Write_Com(0x0007); Lcd_Write_Data((0x01<<8)+0x33); // 262K color and display ON
    IOWR_ALTERA_AVALON_PIO_DATA(CS_BASE, 1); //关闭片选使能

}


int main(void)
{
    int i,j;
    Lcd_Init();          //TFT初始化
    /*IOWR_ALTERA_AVALON_PIO_DATA(RS_BASE, 1);//rs=1   
    IOWR_ALTERA_AVALON_PIO_DATA(CS_BASE, 1);  
    IOWR_ALTERA_AVALON_PIO_DIRECTION(DATA_BASE, 0xffff);//cmd out
    for(i=0;i<240;i++){
        for(j=0;j<320;j++){
            IOWR_ALTERA_AVALON_PIO_DATA(DATA_BASE, 0xf8);//dat     
            IOWR_ALTERA_AVALON_PIO_DATA(WR_BASE, 0);
            IOWR_ALTERA_AVALON_PIO_DATA(WR_BASE, 1);
        }
    }*/
       // Pant(0xf800); //红色
        //delayms(2000);
        //Pant(0X07E0); //绿色
        //delayms(2000);
        //Pant(0x001f); //蓝色            
        //delayms(2000);
    return 0;

}

yangshuhe33

我的nios频率是100M的，是不是频率太高了？ 还有，从这现象来看，初始化成功了吗？

avic

这个是跟你一样的驱动器，使用nios驱动的，你看看，我已经试验通过的。
点击此处下载 ourdev_589593V5TEB6.zip(文件大小:13K) (原文件名:TFT.zip)

TigerRay

好像你在开始配置的时候有两个控制线没有置高!所以就成了你那样了1

yangshuhe33

好了，现在好了。其实我都不知道是怎么就弄好了，呵呵

hclmcu

mark