ILI9320的驱动TFT

平常心

ILI9320的驱动TFT [复制链接]

在淘宝上买了一块这样的TFT，用ARM2148去驱动，不知道为什么屏幕显示背景色的时候只能显示一半，就卡死了，什么都出不来了。

程序代码见下：
#include "config.h"

#define uint unsigned int
#define uchar unsigned char
#define  cs    (1<<25)
#define  rs    (1<<26)
#define  wr    (1<<27)
#define  rst   (1<<28)

void delay_ms(uint32 uidly)
{
uint32 i;
for(;uidly>0;uidly--)
  for(i=40000;i>0;i--);
}

void LCD_WR_REG(uint index)
{
IO0CLR = rs;
IO0CLR = cs;
IO0CLR = 0xff<<16;
IO0SET = (index&0xff)<<16;
IO1CLR = 0xff<<16;
IO1SET = ((index>>8)&0xff)<<16;
IO0CLR = wr;
IO0SET = wr;
IO0SET = cs;
IO0SET = rs;
}

void LCD_WR_Data(uint val)
{
IO0SET = rs;
IO0CLR = cs;
IO0CLR = 0xff<<16;
IO0SET = (val&0xff)<<16;
IO1CLR = 0xff<<16;
IO1SET = ((val>>8)&0xff)<<16;
IO0CLR = wr;
IO0SET = wr;
IO0SET = cs;
}
void LCD_WR_CMD(uint index,uint val)
{
IO0CLR = rs;
IO0CLR = cs;
IO0CLR = 0xff<<16;
IO0SET = (index&0xff)<<16;
IO1CLR = 0xff<<16;
IO1SET = ((index>>8)&0xff)<<16;
IO0CLR = wr;
IO0SET = wr;
IO0SET = cs;
IO0SET = rs;
IO0CLR = cs;
IO0CLR = 0xff<<16;
IO0SET = (val&0xff)<<16;
IO1CLR = 0xff<<16;
IO1SET = ((val>>8)&0xff)<<16;
IO0CLR = wr;
IO0SET = wr;
IO0SET = cs;
IO0CLR = rs;
}

void Lcd_Init(void)
{
PINSEL0 = 0x00000000;
PINSEL1 = 0x00000000;
PINSEL2 = PINSEL2&(~0x08);

IO0DIR = cs|wr|rs|rst;
IO0SET = cs|wr|rs|rst;
}
void Lcd_Disp(void)
{
IO0CLR = rst;
delay_ms(100);
IO0SET = rst;
delay_ms(100);

LCD_WR_CMD(0x00E5, 0x8000);   // Set the internal vcore voltage
LCD_WR_CMD(0x0000, 0x0001);   // Start internal OSC.
delay_ms(40);
LCD_WR_CMD(0x0001, 0x0000);  // set SS and SM bit
LCD_WR_CMD(0x0002, 0x0700);  // set 1 line inversion
LCD_WR_CMD(0x0003, 0x1038);  // set GRAM write direction and BGR=1.
LCD_WR_CMD(0x0004, 0x0000);  // Resize register
LCD_WR_CMD(0x0008, 0x0202);  // set the back porch and front porch
LCD_WR_CMD(0x0009, 0x0000);  // set non-display area refresh cycle ISC[3:0]
LCD_WR_CMD(0x000A, 0x0000);  // FMARK function
LCD_WR_CMD(0x000C, 0x0000);   // RGB interface setting
LCD_WR_CMD(0x000D, 0x0000);  // Frame marker Position
LCD_WR_CMD(0x000F, 0x0000);   // RGB interface polarity
LCD_WR_CMD(0x002b, 0x0020);     //frame rate and color control(0x0000)
//*************Power On sequence ****************
LCD_WR_CMD(0x0010, 0x0000);   // SAP, BT[3:0], AP, DSTB, SLP, STB
LCD_WR_CMD(0x0011, 0x0004);   // DC1[2:0], DC0[2:0], VC[2:0]
LCD_WR_CMD(0x0012, 0x0000);   // VREG1OUT voltage
LCD_WR_CMD(0x0013, 0x0000);   // VDV[4:0] for VCOM amplitude
delay_ms(100);    // Dis-charge capacitor power voltage
LCD_WR_CMD(0x0010, 0x17B0);   // SAP, BT[3:0], AP, DSTB, SLP, STB
LCD_WR_CMD(0x0011, 0x0001);   // DC1[2:0], DC0[2:0], VC[2:0]
delay_ms(50);      // Delay 50ms
LCD_WR_CMD(0x0012, 0x013e);   // VREG1OUT voltage
delay_ms(50);      // Delay 50ms
LCD_WR_CMD(0x0013, 0x1c00);   // VDV[4:0] for VCOM amplitude
LCD_WR_CMD(0x0029, 0x001e);   // VCM[4:0] for VCOMH
delay_ms(50);
LCD_WR_CMD(0x0020, 0x0000);   // GRAM horizontal Address
LCD_WR_CMD(0x0021, 0x0000);   // GRAM Vertical Address
// ----------- Adjust the Gamma Curve ----------//
LCD_WR_CMD(0x0030, 0x0002);
LCD_WR_CMD(0x0031, 0x0606);
LCD_WR_CMD(0x0032, 0x0501);

LCD_WR_CMD(0x0035, 0x0206);
LCD_WR_CMD(0x0036, 0x0504);
LCD_WR_CMD(0x0037, 0x0707);
LCD_WR_CMD(0x0038, 0x0306);
LCD_WR_CMD(0x0039, 0x0007);
LCD_WR_CMD(0x003C, 0x0700);
LCD_WR_CMD(0x003D, 0x0700);
//------------------ Set GRAM area ---------------//
LCD_WR_CMD(0x0050, 0x0000);  // Horizontal GRAM Start Address
LCD_WR_CMD(0x0051, 0x00EF);  // Horizontal GRAM End Address
LCD_WR_CMD(0x0052, 0x0000);  // Vertical GRAM Start Address
LCD_WR_CMD(0x0053, 0x013F);  // Vertical GRAM Start Address

LCD_WR_CMD(0x0060, 0x2700);  // Gate Scan Line
LCD_WR_CMD(0x0061, 0x0001);  // NDL,VLE, REV
LCD_WR_CMD(0x006A, 0x0000);  // set scrolling line
//-------------- Partial Display Control ---------//
LCD_WR_CMD(0x0080, 0x0000);
LCD_WR_CMD(0x0081, 0x0000);
LCD_WR_CMD(0x0082, 0x0000);
LCD_WR_CMD(0x0083, 0x0000);
LCD_WR_CMD(0x0084, 0x0000);
LCD_WR_CMD(0x0085, 0x0000);
//-------------- Panel Control -------------------//
LCD_WR_CMD(0x0090, 0x0010);
LCD_WR_CMD(0x0092, 0x0000);
LCD_WR_CMD(0x0093, 0x0003);
LCD_WR_CMD(0x0095, 0x0110);
LCD_WR_CMD(0x0097, 0x0000);
LCD_WR_CMD(0x0098, 0x0000);

LCD_WR_CMD(0x0007, 0x0173);  // 262K color and display ON
LCD_WR_REG(0x0022);
}
void lcd_bk()
{
uint16 temp,n,num;
LCD_WR_CMD(0x0050, 0x0000);  // Horizontal GRAM Start Address
LCD_WR_CMD(0x0051, 0x00EF);  // Horizontal GRAM End Address
LCD_WR_CMD(0x0052, 0x0000);  // Vertical GRAM Start Address
LCD_WR_CMD(0x0053, 0x013F);  // Vertical GRAM Start Address
//temp=color[bk];
LCD_WR_CMD(0x20,0);        //0-239
LCD_WR_CMD(0x21,0);        //0-319
LCD_WR_REG(0x0022);
for(n=0;n<320;n++)
{
  for(num=0;num<240;num++)
     LCD_WR_Data(0xf800);
  }
delay_ms(50);

}
int main()
{
Lcd_Init();
Lcd_Disp();

while(1)
{
  lcd_bk();
}
}                                                                        

怀疑是时序和初始化问题，但是一直检查不出来，希望做过TFT的人帮忙看看，谢谢了。

[ 本帖最后由 平常心 于 2009-7-31 09:41 编辑 ]

tianyayouzi

张无忌1987

最近我也在调试ILI9320呢，还没搞定啊

zhaojun_xf

这个代码我有，在这个帖子，你可以下载看看：https://bbs.eeworld.com.cn/thread-108375-1-1.html

zhaojun_xf

我有点奇怪的是，你用ARM开发怎么不单步调试，看问题在哪里呢？