求一STC51单片机按键控制LED灯移位程序谢谢！！！

ID:404202 · 发表于 2018-10-31 17:44

求一STC51单片机按键控制LED灯移位程序谢谢！！！

ID:277550 · 发表于 2018-10-31 19:27

#include <reg51.h>

void delayMS(unsigned int n){
unsigned char i,j;
while(n--){
i = 2;
j = 199;
do{
while (--j);
} while (--i);
}
}

//假设P2连接8颗LED，共地
void main(){
unsigned char a, i;

while(1){
//从右往左，逐个亮
a=1; i=0;
do{
P2=a;
a<<=1;
delayMS(400); //延时400ms
}while(++i<8);

for(i=0; i<2; i++){ //闪2下
P2=0xff; //全亮
delayMS(700);
P2=0x00; //全灭
delayMS(700);
}

//从左往右，逐个亮
a=0x80; i=0;
do{
P2=a;
a>>=1;
delayMS(400); //延时400ms
}while(++i<8);

for(i=0; i<2; i++){//闪2下
P2=0xff; //全亮
delayMS(700);
P2=0x00; //全灭
delayMS(700);
}
}
}

ID:412944 · 发表于 2018-10-31 23:18

#include <reg51.h>
#include <intrins.h>
unsigned char scan_key();
void proc_key(unsigned char key_v);
void delayms(unsigned char ms);
sbit K1 = P0^0; //??????K1
sbit K2 = P0^1; //??????K2
main()
{
unsigned char key_s,key_v;
key_v = 0x03;
P2 = 0xfe;
while(1)
{
key_s = scan_key();
if(key_s != key_v)
{
delayms(10);
key_s = scan_key();
if(key_s != key_v)
{
key_v = key_s;
proc_key(key_v);
}
}
}
}
unsigned char scan_key()
{
unsigned char key_s;
key_s = 0x00;
key_s |= K2;
key_s <<= 1;
key_s |= K1;
return key_s;
}
void proc_key(unsigned char key_v)
{
if((key_v & 0x01) == 0)
{
P2 = _cror_(P2,1);
}
else if((key_v & 0x02) == 0)
{
P2 = _crol_(P2, 1);
}
}
void delayms(unsigned char ms) // ????????
{
unsigned char i;
while(ms--)
{
for(i = 0; i < 120; i++);
}
}

ID:404202 · 发表于 2018-11-1 12:38

devcang 发表于 2018-10-31 19:27
#include

void delayMS(unsigned int n){

谢谢！

ID:404202 · 发表于 2018-11-1 12:39

zeq 发表于 2018-10-31 23:18
#include
#include
unsigned char scan_key();

谢谢！

帐号		自动登录	找回密码
密码			立即注册