?? 串口通信.c
字號:
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
uchar temp,qian,bai,shi,ge,tt;
sbit weil=P2^1;
sbit dual=P2^0;
sbit qie=P3^4;
sbit jia=P3^5;
sbit jian=P3^6;
sbit fa=P3^7;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x76,0x73};
uchar code wela[]={0xfe,0xfd,0xfb,0xf7};
void delay(uint z);
void display(uint qian,uint bai,uint shi,uint ge);
void main()
{ while(1)
{
if (P3_4==0)
{
TMOD=0x11;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
tt=0;
temp=111;
while(1)
{ if (tt==10)
{ tt=0;
temp++;
if (temp==125)
{temp=0;}
bai=temp/100;
shi=temp%100/10;
ge=temp%10;
}
display(bai,shi,ge);
}
}
void display(uint qian,uint bai,uint shi,uint ge)
{
weil=1;
P0=0xfe;
weil=0;
dual=1;
P0=table[qian];
dual=0;
delay(6);
weil=1;
P0=0xfd;
weil=0;
dual=1;
P0=table[bai];
dual=0;
delay(6);
weil=1;
P0=0xfb;
weil=0;
dual=1;
P0=table[shi];
dual=0;
delay(6);
weil=1;
P0=0xf7;
weil=0;
dual=1;
P0=table[ge];
dual=0;
delay(6);
}
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=1000;y>0;y--);
}
void timer0() interrupt 1
{
TH0=(65536-1000)/256;
TL0=(65536-1000)%256;
tt++;
}
void timer1() interrupt 3
{
TH0=(65536-1000)/256;
TL0=(65536-1000)%256;
tt++;
}
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -