請教仿真單片機串口通訊甲機能發,乙機不能接收的問題

ID:891876 · 發表于 2024-1-8 10:18

請大家幫我看看，仿真串口能正常發送，但接收不到數據不知為何？

單片機源程序如下:
發送：

#include <STC89C5xRC.H>
#include<intrins.h>
void Delay(unsigned int xms) //@11.0592MHz
{
unsigned char i, j;
while(xms--)
{
_nop_();
i = 2;
j = 199;
do
{
while (--j);
} while (--i);
}
}
unsigned char Ledtab[16]={0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xdd,0xee,0xff,0x00};
void send(unsigned char ucdata)
{
SBUF = ucdata;
while(TI==0);
TI=0;
}
void main()
{
unsigned char i;
TMOD=0X20;
SCON=0X40;
PCON=0X00;
TH1=0XFD;
TL1=0XFD;
TR1=1;
P1=0XFF;
while(1)
{
for(i=0;i<16;i++)
{
P1=Ledtab[i];
send(Ledtab[i]);
Delay(200);
}
}
}

復制代碼

接收：
#include <STC89C5xRC.H>

unsigned char Receive()
{
      unsigned char ucdata;

      while(RI==0);
            RI=0;
            ucdata = SBUF;
            return ucdata;

}

void main()
{
TMOD=0X20;
      SCON=0X50;
      PCON=0X00;
      TH1=0XFD;
      TL1=0XFD;
      TR1=1;
      REN=1;
      P1=0XFF;
while(1)
               {
                     P1=Receive();
               }

}