#define OSC_FREQ 12000000
#define C1ms (65536-OSC_FREQ/(12000000/980))
//考虑重装时时间上的误差，将1000调整为980
unsigned int ms, second;
void main()
{ DelayXms(60000); //延时6s
DelayXms(6); //延时6ms
}
void DelayXms(unsigned long z)
{
second=0;
ms=0;
TMOD=TMOD&(0x0f)|0x10;
EA=1;
ET1=1;
TR1=1;
do { } while (second*1000+ms<z);
TR1=0;
second=0;
ms=0;
}
void timer1(void) interrupt 3 using 3
{
TH1=C1ms/256;
TL1=C1ms%256;
if(ms>=1000) {
ms=0;
if(second>=60) {
second=0;
}
else{
second++;
}
}
else{
ms++;
}
}
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