uart.c

RS232串口程序

#include <W78E365.h>
#include <uart.h>

void InitUart(void)
{
   // TH1 = 243;                      // 19200@16MHz (when T1M=1 and SMOD=1)
   // TH1 = 247;                      // 28800 16MHz (when T1M=1 and SMOD=1)                              
   // PCON = 0x80;                    // SMOD=1 (double baud rate)
   // SCON = 0x52;                    // Serial mode1, enable receiver
   // TMOD &= ~0x30;
   // TMOD |= 0x20;                   // Timer1 8bit auto reload 
   // TR1 = 1;                        // Start timer1
    //ES = 0;

	

//-----------INITIALIZE SERIES PORT HERE, AND START TIMER1------------------;
	SCON=0x50;//, #50H		; DEFINE SERIES MODE
	TMOD=0x20;//#20H		; DEFINE TIMER1 MODE2
	TH1=0xFD;//, #0FDH		; PRESET TH1 TO BE FD OF AUTORELOAD EVERYTIME
	PCON=0x80;//, #7FH		; SET PCON
	TR1=1;//                ; START TIMER MOV SCON, #50H		
}

void sPutChar(char c)
{
    TI = 0;
    SBUF = c;
    while(!TI)
        ;
}

unsigned char sGetChar(void)
{
    unsigned char c;
	c = SBUF;
	RI=0;
	return c;
}