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標(biāo)題: 單片機(jī)矩陣按鍵控制12864顯示1-100 [打印本頁(yè)]

作者: Jimqi 時(shí)間: 2020-2-23 12:38
標(biāo)題: 單片機(jī)矩陣按鍵控制12864顯示1-100
矩陣按鍵控制12864顯示1-10012864底驅(qū)：

#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
#define LCD_data=P0;//屏并行端口DB0~DB7
uchar time;//定義全局變量
sbit rs=P3^5;//屏端口定義
sbit wr=P3^6;//
sbit en=P3^4;//屏使能

sbit rd=P3^4;//屏復(fù)位
unsigned char addresses[] = {0x80,0x90,0x88,0x98};// 12864 地址
void delay_1ms(uint x);//12864 1ms延時(shí)函數(shù)
void write_cmd(uchar cmd);// 12864 寫命令
void write_data(uchar dat);// 12864 寫數(shù)據(jù)
// void LCD12864_Display_Char(unsigned char x,unsigned char y,unsigned char dat);
void LCD12864_Display_Chars(unsigned char x,unsigned char y,unsigned char *dat);//12864
void lcd_init();                                              //LCD準(zhǔn)備函數(shù)

void delay_1ms(uint x)//12864 1ms延時(shí)函數(shù)
{
      uint i,j;
      for(i=0;i<x;i++)
            for(j=0;j<100;j++);
}
void write_cmd(uchar cmd)// 12864 寫命令
{
      rs=0;
      wr=0;
      en=0;
      P0=cmd;
      delay_1ms(10);//延時(shí)5ms
      en=1;
      delay_1ms(10);
      en=0;
}
void write_data(uchar dat)// 12864 寫數(shù)據(jù)
{
      rs=1;
      wr=0;
      en=0;
      P0=dat;
      delay_1ms(10);
      en=1;
      delay_1ms(10);
      en=0;
}

//void LCD12864_Display_Char(unsigned char x,unsigned char y,unsigned char dat)
//{
//       write_cmd(0x30);
//       write_cmd(0x06);
//       write_cmd(addresses[x-1]+(y-1));
//       write_data(dat);//寫字符
//}
void LCD12864_Display_Chars(unsigned char x,unsigned char y,unsigned char *dat)//12864
{
      write_cmd(0x30);
      write_cmd(0x06);
      write_cmd(addresses[x-1]+(y-1));
      while(*dat != '\0')//寫漢字
      {
            write_data(*dat);
            dat++;
      }
}
void lcd_init()                                              //LCD準(zhǔn)備函數(shù)
{
      rd=1;
      write_cmd(0x30);
      delay_1ms(5);
      write_cmd(0x0C);
      delay_1ms(5);
      write_cmd(0x01);
      delay_1ms(5);
}

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