求助：若单片机收到字符‘a’，则打开所有发光二级管；若收到字符‘b’，则关闭所... -

标题: 求助：若单片机收到字符‘a’，则打开所有发光二级管；若收到字符‘b’，则关闭所... [打印本页]

作者: threatenxiaolai 时间: 2020-6-16 23:52
标题: 求助：若单片机收到字符‘a’，则打开所有发光二级管；若收到字符‘b’，则关闭所...
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
void Uartlnit();
unsigned char flag,i,a=0x00,b=0xff;
typedef unsigned int u16; //?????????????????????
typedef unsigned char u8;
#define led P1 //??P1??????led,???????????led????P1??
void delayms(u16);
void delayms(uint); //????????????????

void Uartlnit()
{
while(1)
{
u8 i;
  led=0x00; //??????? ???????з????????
  delayms(1000); //??????? ???1000ms
  led=0xff;    //??????? ??????з????????
  delayms(1000);
}

SM0=0; //??????? ?洢?????
SM1=1; //??????? ??????????????1
TMOD=0X20; //??????? ?趨?????1?8λ?????????
REN=1; //??????? ??????????????
TR1=1; //??????? ????????1
  TH1=0XFD;
TL1=0XFD; //??????? ?趨?????????????????9600bps
EA=1; //??????? ????ж????
ES=1; //??????? ?????ж????

}
void main()
{
Uartlnit();
while(1)
{
if(flag==1)
{
   ES=0;
for(i=0;i<6;i++)
{
SBUF=a;
led=0x00;
while(!TI);
TI=0;
}
   flag=0;
   SBUF=a;
led=a;
   while(!TI);
   TI=0;
   ES=1;
   }

else if(flag==1)
{
   ES=0;
for(i=0;i<6;i++)
{
SBUF=b;
led=0xff;
while(!TI);
TI=0;
}
   flag=0;
   SBUF=b;
led=b;
   while(!TI);
   TI=0;
   ES=1;
}
  else
  {
led=0x00;
   delayms(1000); //??????? ???1000ms
   led=0xff;
}
}
}

void ser() interrupt 4 //??????? ???崮???ж?
{
RI=0;
P1=SBUF;
a=SBUF;
b=SBUF;
flag=1;
}
void delayms(uint x)
{
uint i,j;
for(i=x;i>0;i--) //??????? i=x???????x????
  for(j=114;j>0;j--);
}

这是我的，不知道哪里出问题了，能帮我看看嘛，谢谢。

作者: threatenxiaolai 时间: 2020-6-16 23:53
若单片机收到字符‘a’，则打开所有发光二级管；若收到字符‘b’，则关闭所有发光二级管；否则，所有发光二级管每隔1s闪烁一次。

作者: 烈火 时间: 2020-6-17 08:17
自定义与宏定义冲突了 #define uint unsigned int
#define uchar unsigned char
typedef unsigned int u16;
typedef unsigned char u8

作者: wulin 时间: 2020-6-17 08:43
#include<reg52.h>
typedef unsigned int u16;
typedef unsigned char u8;
#define led P1

void Uart_Init()
{
TMOD=0X20;
TH1=0XFD;
TL1=0XFD;
TR1=1;
REN=1;
SM0=0;
SM1=1;
EA=1;
ES=1;
}

void main()
{
Uart_Init();
while(1);
}

void ser() interrupt 4
{
u8 i;
RI=0;
i=SBUF;
if(i=='a')
led=0x00;
if(i=='b')
led=0xff;
}

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