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標題: STC15F單片機12864源程序 [打印本頁]

作者: q1427492841 時間: 2016-11-8 21:23
標題: STC15F單片機12864源程序
#include<STC15Fxxxx.h>
#define IO_12864  P0
sbit RS_12864 = P2^5;
sbit RW_12864 = P2^6;
sbit E_12864 = P2^7;
sbit RST_12864 = P2^2;
//忙檢測，若忙則等待，最長等待時間為60ms
void busychk_12864(void)
{
unsigned int timeout = 0;
E_12864 = 0;
RS_12864 = 0;
RW_12864 = 1;
E_12864 = 1;
while((IO_12864 & 0x80) && ++timeout != 0);  //忙狀態檢測，等待超時時間為60ms
E_12864 = 0;
}

void delay_12864(unsigned int del)
{
unsigned int i;
for(i = 0; i < del; i++){; }
}

//寫命令子程序
void wrtcom_12864(unsigned char com)
{
busychk_12864();
E_12864 = 0;
RS_12864 = 0;
RW_12864 = 0;
IO_12864 = com;
E_12864 = 1;
delay_12864(50); //使能延時!!!注意這里，如果是較快的CPU應該延時久一些
E_12864 = 0;
}

//讀數據子程序
unsigned char reddat_12864(void)
{
unsigned char temp;
busychk_12864();
E_12864 = 0;
IO_12864 = 0xff;  //IO口置高電平，讀引腳
RS_12864 = 1;
RW_12864 = 1;
E_12864 = 1;
delay_12864(50); //使能延時!!!注意這里，如果是較快的CPU應該延時久一些
temp = IO_12864;

return temp;
}

//寫數據子程序
void wrtdat_12864(unsigned char dat)
{
busychk_12864();
E_12864 = 0;
RS_12864 = 1;
RW_12864 = 0;
E_12864 = 1;
IO_12864 = dat;
delay_12864(50); //使能延時!!!注意這里，如果是較快的CPU應該延時久一些
E_12864 = 0;
}

//初始化12864子函數
void initial_12864(void)
{
delay_12864(40000);
RST_12864 = 1;
RST_12864 = 0; //復位
delay_12864(500);
RST_12864 = 1;
wrtcom_12864(0x30); //設置為基本指令集動作
delay_12864(100);
wrtcom_12864(0x30); //設置為基本指令集動作
delay_12864(37);
wrtcom_12864(0x08); //設置顯示、光標、閃爍全關。
delay_12864(100);
wrtcom_12864(0x01); //清屏，并且DDRAM數據指針清零
delay_12864(100000);
wrtcom_12864(0x06); //進入模式設置
wrtcom_12864(0x0c); //開顯示

}

void main()
{
  unsigned char i,*addr;
  unsigned char defchar[] = {0x08,0x10,0x08,0x10,0x08,0x10,0x7F,0xFE,0x20,0x04,0x12,0x48,0x08,0x10,0x05,0xA0,0x02,0x40,0x01,0x80,0x01,0x80,0x07,0xE0,0x09,0x90,0x11,0x88,0x11,0x88,0x11,0x88}; //自定義字符，這里是筆者畫的一個小機器人。
  P0M1 = 0; P0M0 = 0;
   P2M1 = 0; P2M0 = 0;
  delay_12864(100);    //啟動延時
  initial_12864();    //初始化12864
  addr = defchar;
  wrtcom_12864(0x40+0x20); //寫CGRAM首行地址
  for(i = 0; i < 32; i++)
{
wrtdat_12864(*addr++);
  }
  wrtcom_12864(0x80);    //在第一行第一個字符出顯示自定義字符
  wrtdat_12864(0x00);    //寫第三個自定義字符編碼的高字節
  wrtdat_12864(0x04);    //寫第三個自定義字符編碼的低字節

  while(1);

}

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