CT107D蓝桥杯单片机按键代码
作者:互联网
1、独立按键
/*
#include <reg52.h>
sbit led0 = P0^0;
sbit led1 = P0^1;
sbit led2 = P0^2;
sbit led3 = P0^3;
void delayms(int ms);
void main()
{
char i,temp;
P2=0XA0;P0=0X00;P2=0x80;P0=0XFF;
while(1)
{
temp = 0x01;
for(i=0;i<8;i++)
{
P0 = ~temp;
delayms(1000);
temp = 1<<temp;
}
// led0 = 0;
// delayms(1000);
// led1 = 0;
// delayms(1000);
// led2 = 0;
// delayms(1000);
// led3 = 0;
// delayms(1000);
}
}
void delayms(int ms)
{
int i,j;
for(i=ms;i>0;i--)
for(j=845;j>0;j--);
}
*/
/*
#include <reg52.h>
void delay(int t)
{
int a;
for(;t>0;t--)
{
for(a=20000;a>0;a--);
}
}
void main()
{
int status = 0x7f;
int a,b,count = 0;
P2=0xa0;P0=0x00;
P2=0x80;P0=0xff;//?????????????????С??
while(1)
{
P0=status;//led0??
delay(100);//?????1??
a = status>>1;//????С???????λ
b = status<<7;//???status?????????????0???1
status = a|b;
count++;
if(7 == count)
{
status = 0x7f;
}
}
}*/
/*???????????????LED???????s7?????s6???s5???????s4??????*/
#include <reg52.h>
#include <intrins.h>
sbit s7 = P3^0;
sbit s6 = P3^1;
sbit s5 = P3^2;
sbit s4 = P3^3;
void Delay1ms();
void delayms(int ms);
void keyscan4();
void main()
{
P2=0xa0;P0=0x00;P2=0x80;P0=0xff;
while(1)
{
keyscan4();
}
}
void keyscan4()
{
//????s7???
if(s7==0)
{
delayms(5); //??????
if(s7==0)
{
P0 = 0x00;
}
while(!s7); //??????????????????????????κ???
}
//????s6???
if(s6==0)
{
delayms(5);
if(s6==0)
{
P0 = 0xff;
}
while(!s6);
}
//????s5??????
if(s5==0)
{
delayms(5);
if(s5==0)
{
P0 = 0x55;
}
while(!s5);
}
//????s4?????
if(s4==0)
{
delayms(5);
if(s4==0)
{
P0 = 0xaa;
}
while(!s4);
}
}
void Delay1ms() //@11.0592MHz
{
unsigned char i, j;
_nop_();
_nop_();
_nop_();
i = 11;
j = 190;
do
{
while (--j);
} while (--i);
}
void delayms(int ms)
{
int i;
for(i=0;i<ms;i++)
Delay1ms();
}
标签:P0,单片机,int,void,delayms,蓝桥,CT107D,while,sbit 来源: https://blog.csdn.net/janmesyang/article/details/88290159