serial.c

51单片机控制产生4路标准舵机PWM（周期20ms

/*--------------------------------------------------------------------------
Serial.C 串口

--------------------------------------------------------------------------*/
#include <Serial.h>
#include <REG52.H>

void init_serialcomm( void ) 
{ 
    SCON  = 0x50;		        /* SCON: mode 1, 8-bit UART, enable receive     */
    TMOD |= 0x20;               /* TMOD: timer 1, mode 2, 8-bit reload        */
    TH1   = 0xF4;                /* TH1:  reload value for 2400 baud @ 11.0592MHz   */
    TR1   = 1;                  /* TR1:  timer 1 run                          */
    TI    = 0;
	ES=1;
	RI	=0;                  /* TI:   set TI to send first char of UART    */
}