wg26_rs232.c

读取韦根数据转换成RS232后传给上位机的程序

#include <reg52.h>    
   
unsigned char Current,Data[4];   
   
void Send_Char(unsigned char);   
void Send_Data(void);   
   
void main (void)   
{   
    SCON = 0x50;   
    TMOD = 0x21;   
    EA=1;
	ET0=1;
	EX0=1;
	EX1=1;  
    TH0  = 0xEE;   
    TL0  = 0x0;   
    TH1  = 0xFD;   
    TL1  = 0xFD;   
    TCON = 0x55;   
   
    while(1)   
    {   
        if(Current == 26)   
        {   
            Current = 0;   
            EA = 0;   
            Send_Data();   
            EA = 1;   
        }   
    }   
}   
   
void Ex0(void) interrupt 0   
{   
    Data[(25 - Current) / 8] &= ~(0x1 << ((25 - Current) % 8));   
    TH0 = 0xEE;   
    TL0 = 0x0;   
    Current++;   
}   
   
void Ex1(void) interrupt 2   
{   
    Data[(25 - Current) / 8] |= 0x1 << ((25 - Current) % 8);   
    TH0 = 0xEE;   
    TL0 = 0x0;   
    Current++;   
}   
   
void Timer0(void) interrupt 1   
{   
    TH0 = 0xEE;   
    TL0 = 0x0;   
    Current = 0;   
}   
   
void Send_Char(unsigned char buf)   
{   
    SBUF = buf;   
    while(TI == 0);   
    TI = 0;   
}   
   
void Send_Data(void)   
{   
    Send_Char(0x55);   
    Send_Char(Data[3]);   
    Send_Char(Data[2]);   
    Send_Char(Data[1]);   
    Send_Char(Data[0]);   
    Send_Char(0xAA);   
}