initmcu.c

单片机C源程序souce

#include <SST89V564.H>


extern InitMCU(void)//Initialize the Registers in SST89V564RD.
{
SCON = 0x50;	/*Set the serial port working mode*/
TMOD = 0x21;
TCON = 0x05;
CMOD = 0x00;
CCON = 0x00;
PCON = 0x80;
CL = 0x00;
CH = 0x00;
P0 = 0xff;
P1 = 0xff;
P2 = 0xff;
P3 = 0xff;
ES  = 1;//Enable Serial interruption.
EX0 = 1;//Enable INT1 interruption.
ET0 = 1;//Enable T0 interruption.
EA  = 1;//Enable interruption.
TH1 = 0xfd;	//Set baud rate to 38400bps.
TL1 = 0xfd;
TR1 = 1;
TH0 = 0x4c;//Timing for 25ms.
TL0 = 0xf7;
TR0 =1;
}