sm89516dev.c

51开发板的源程序

#include "c51base.h"

void InitSFR_SM89516()
{
	SCONF = 0X03;//允许外部RAM，禁止ALE信号
	RCON = 0;
	DBANK = 1;
	P1CON = 0;
	SPWMC = 0;
	SPWMD0 = 0;
	SPWMD1 = 0;
	SPWMD2 = 0;
	SPWMD3 = 0;
	SPWMD4 = 0;
	P4 = 0;	
}

void WDTReset_SM89516()
{
	EA = 0;
	WDTKEY = 0X1E;
	WDTKEY = 0XE1;
	WDTC   = 0XA7; //32毫秒
	WDTKEY = 0XE1;
	WDTKEY = 0X1E;
	EA = 1;
}