单片机怎么中断套中断 - 搜狗问问

//晶振：12MHz 单片机：8051系列

#include

#define T 10000 //定义PWM周期，单位：ms

#define M 65536-T

#define T0H (char)(M/256)

#define T0L (char)(M%256)

#define PWM P1_0

unsigned char T1H,T1L;

void main()

{

unsigned int SetPWM;

EA=1;

ET0=1;

ET1=1;

TH0=T0H;

TL0=T0L;

TR0=1;

TR1=0;

PWM=0;

SetPWM=100; //设置高电平周期，单位：ms

T1H=SetPWM/256;

T1L=SetPWM%256;

while(1);

}

void timer0() interrupt 1

{

TH0=T0H;

TL0=T0L;

TH1=T1H;

TL1=T1L;

PWM=1;

TR1=1;

}

void timer1()interrupt 3

{

PWM=0;

TR1=0;

}