oled学习

/******************************** 
*     XS128OLED12864 
*     by Quex 
*     2014/7/10 
********************************/  
#include <hidef.h>      /* common defines and macros */  
#include "derivative.h"      /* derivative-specific definitions */  
  
  
#define LED_SCL PTT_PTT0 // 时钟定义  
#define LED_SDA PTT_PTT1  //数据口D1  
#define LED_RST PTT_PTT2 //复位低能电平  
#define LED_DC  PTT_PTT3 //偏置常低  
#define WIDTH 128  
#define HEIGHT 64  
  
//写指令：  
void Write_Cmd(byte cmd){  
    uchar cycle;  //循环量  
    LED_DC=0;     //写命令  
    LED_SCL=0;    //拉低时钟  
    for(cycle=0;cycle<8;cycle++){  
         if(cmd&0x80)  
            LED_SDA=1;  
          else  
            LED_SDA=0;  
        // asm("nop");   
         LED_SCL=1;  
         asm("nop");  
         asm("nop");  
         LED_SCL=0;  
         cmd<<=1;  
    }  
}  
  
//写数据  
void Write_Data(byte data){  
    uchar cycle;  //循环量  
    LED_DC=1;     //写命令  
    LED_SCL=0;    //拉低时钟  
    for(cycle=0;cycle<8;cycle++){  
         if(data&0x80)  
            LED_SDA=1;  
         else  
            LED_SDA=0;  
        // asm("nop");  
         LED_SCL=1;  
         asm("nop");  
         asm("nop");  
         LED_SCL=0;  
         data<<=1;  
    }  
}  
  
//初始化  
void OLED_Init(){  
   DDRT=0xff;  //T口作为输出  
   LED_SCL=1;  
   LED_RST=0;  
   asm("nop");  
   asm("nop");  
   LED_RST=1;  
   Write_Cmd(0xa0); //写命令  
   Write_Cmd(0xc0);//写命令  
   Write_Cmd(0x8d); //写命令  
   Write_Cmd(0x14);  
   Write_Cmd(0xaf); //开显示  
}  
  
//填充数据  
void OLED_Fill(byte data)  
{  
    byte y,x;  
      
    for(y=0;y<8;y++)  
    {  
        Write_Cmd(0xb0+y);//设置页地址  
        Write_Cmd(0x01); //设置列低四位  
        Write_Cmd(0x10); //设置列高四位  
        for(x=0;x<WIDTH;x++)  
        Write_Data(data);  
    }  
}  
  
//毫秒级延时  
void Delay_ms(int ms)  
{  
   int i,j;  
   if (ms<1) ms=1;  
   for(i=0;i<ms;i++)  
     for(j=0;j<1335;j++);  //16MHz--1ms  
}  
  
void main(void) {  
    
   OLED_Init();  
//  EnableInterrupts;  
  for(;;) {  
    OLED_Fill(0xf0);  
    Delay_ms(1000);   
    OLED_Fill(0x01);  
    Delay_ms(1000);  
    _FEED_COP();   
  }   
}