电子技术论坛_中国专业的电子工程师学习交流社区-中电网技术论坛

标题: ILI9325驱动程序 [打印本页]

作者: aniaiye 时间: 2010-5-19 10:22 标题: ILI9325驱动程序

最近刚刚开始搞这个芯片，用来驱动一块320*240的2.8"液晶屏，结果试了一天都没有结果。后来在网上下载了一些初始化寄存器的例子，参考以后还是不行，不知道哪个环节出了问题。插一句，本来屏幕边缘一小块区域是可以随着初始化刷屏改变颜色的，后来也不知改了什么地方，连这个效果也看不到了。
  下面是我的初始化程序，用的是飞思卡尔EP100的单片机。
//初始化 ili9325 控制器
void ili9325_Init()
{
  Dly_ms(10);
LCMCS=1;
LCMRS=1;
  LCMWr=1;
  LCMRd=1;
  LCMLedOn=0;
  Dly_ms(50);
  ili9325_WriteRegister(0xe7,0x0010);
  //************* Start Initial Sequence **********//
  ili9325_WriteRegister(0x00,0x0001);
  ili9325_WriteRegister(0x01,0x0100);    // SS set high
  ili9325_WriteRegister(0x02,0x0700); //power on sequence
  ili9325_WriteRegister(0x03,0x1030);    //65K
  ili9325_WriteRegister(0x04,0x0000);
  ili9325_WriteRegister(0x08,0x0206);
  ili9325_WriteRegister(0x09,0x0000);
  ili9325_WriteRegister(0x0a,0x0000);
  ili9325_WriteRegister(0x0c,0x0001);
  ili9325_WriteRegister(0x0d,0x0000);
  ili9325_WriteRegister(0x0f,0x0000);
  Dly_ms(2);
  //*************Power On sequence ****************//
  ili9325_WriteRegister(0x10,0x0000);
  ili9325_WriteRegister(0x11,0x0007);
  ili9325_WriteRegister(0x12,0x0000);
  ili9325_WriteRegister(0x13,0x0000);
Dly_ms(2);
  ili9325_WriteRegister(0x10,0x1590);
  ili9325_WriteRegister(0x11,0x0227);
Dly_ms(2);
  ili9325_WriteRegister(0x12,0x009c);
  Dly_ms(2);
  ili9325_WriteRegister(0x13,0x1900);
  ili9325_WriteRegister(0x29,0x0023);
  ili9325_WriteRegister(0x2b,0x000e);
Dly_ms(2);
  ili9325_WriteRegister(0x20,0x0000);
  ili9325_WriteRegister(0x21,0x0000);
Dly_ms(2);
// ----------- Adjust the Gamma Curve ----------//

  ili9325_WriteRegister(0x30,0x0007);
  ili9325_WriteRegister(0x31,0x0707);
  ili9325_WriteRegister(0x32,0x0006);
  ili9325_WriteRegister(0x35,0x0704);
  ili9325_WriteRegister(0x36,0x1f04);
  ili9325_WriteRegister(0x37,0x0004);
  ili9325_WriteRegister(0x38,0x0000);
  ili9325_WriteRegister(0x39,0x0706);
  ili9325_WriteRegister(0x3c,0x0701);
  ili9325_WriteRegister(0x3d,0x000f);
  Dly_ms(2);
  //------------------ Set GRAM area ---------------//
  ili9325_WriteRegister(0x50,0x0000);
  ili9325_WriteRegister(0x51,0x00ef);
  ili9325_WriteRegister(0x52,0x0000);
  ili9325_WriteRegister(0x53,0x013f);
  ili9325_WriteRegister(0x60,0xa700);
  ili9325_WriteRegister(0x61,0x0001);
  ili9325_WriteRegister(0x6a,0x0000);
  //-------------- Partial Display Control ---------//
  ili9325_WriteRegister(0x80,0x0000);
  ili9325_WriteRegister(0x81,0x0000);
  ili9325_WriteRegister(0x82,0x0000);
  ili9325_WriteRegister(0x83,0x0000);
  ili9325_WriteRegister(0x84,0x0000);
  ili9325_WriteRegister(0x85,0x0000);

  ili9325_WriteRegister(0x90,0x0010);
  ili9325_WriteRegister(0x92,0x0000);
  ili9325_WriteRegister(0x93,0x0003);
  ili9325_WriteRegister(0x95,0x0110);
  ili9325_WriteRegister(0x97,0x0000);
  ili9325_WriteRegister(0x98,0x0000);
  ili9325_WriteRegister(0x07,0x0133);
  Dly_ms(2);
  LCMLedOn=1;
  ili9325_Clear(0x001f);
}

void ili9325_Clear(word data)
{
  dword i;
  ili9325_WriteRegister(0x20,0);
  ili9325_WriteRegister(0x21,0);
ili9325_WriteRegister(0x50,0x0000);//水平 GRAM起始位置
ili9325_WriteRegister(0x51,239);//水平GRAM终止位置
ili9325_WriteRegister(0x52,0x0000);//垂直GRAM起始位置
ili9325_WriteRegister(0x53,319);//垂直GRAM终止位置

  for(i=0;i<76800;i++)
  {
ili9325_WriteGRAM(data);
  }
}
void Dly_ms(int ms)
{
int ii,jj;
if (ms<1) ms=1;
for(ii=0;ii<ms;ii++)
   for(jj=0;jj<2670;jj++);
}
//写 ili9325 寄存器数据
void ili9325_WriteGRAM(word data)
{
  LCMCS=0;
  LCMRS=0;
  LCMRd=1;

  PORTB = 0x00;
  LCMWr=0;
  Dly_ms(1);
  LCMWr=1;

  PORTB = 0x22;
  LCMWr=0;
  Dly_ms(1);
  LCMWr=1;

  LCMRS=1;
  PORTB = (byte)(data>>8);
  LCMWr=0;
  Dly_ms(1);
  LCMWr=1;

  PORTB = (byte)(data&0x00ff);
  LCMWr=0;
  Dly_ms(1);
  LCMWr=1;
  LCMCS=1;

}
//写指定地址寄存器数据
void ili9325_WriteRegister(byte index,word data)
{
  LCMCS=0;
  LCMRS=0;
  LCMRd=1;

  PORTB = 0x00;
  LCMWr=0;
  Dly_ms(1);
  LCMWr=1;

  PORTB = index;
  LCMWr=0;
  Dly_ms(1);
  LCMWr=1;

  LCMRS=1;
  PORTB = (byte)(data>>8);
  LCMWr=0;
  Dly_ms(1);
  LCMWr=1;

  PORTB = (byte)(data&0x00ff);
  LCMWr=0;
  Dly_ms(1);
  LCMWr=1;
  LCMCS=1;
}

作者: aniaiye 时间: 2010-5-19 10:24

补充一句，用的是i80 system interface with 8bit bus width

作者: 落叶秋无声 时间: 2010-5-19 21:20

请问你这程序是自己编的吗？

作者: finewind 时间: 2010-5-20 11:27

检查时序，看你的指令执行的时长是不是符合ILI9325芯片的读写时序

作者: aniaiye 时间: 2010-5-20 17:02

是自己写的，本来屏幕边缘一小块区域是可以随着初始化刷屏改变颜色的，所以所时序应该没有问题啊。

欢迎光临电子技术论坛_中国专业的电子工程师学习交流社区-中电网技术论坛 (http://bbs.eccn.com/)