//寫了個(gè)測試程序，希望對你有幫助#include<reg52.h>#defineucharunsignedcharucharm=0,i=0;voidmain(){TMOD|=0x01;//定時(shí)器0工作方式為1TH0=(65536-50000)/256;//裝初值TL0=(65536-50000)%256;EA=1;//開總中斷ET0=1;//開定時(shí)器中斷TR0=1;//開啟定時(shí)器while(1);//等待中斷}voidtimer0()interrupt1{TH0=(65536-50000)/256;TL0=(65536-50000)%256;m++;if(m==5)//12M晶振定時(shí)5*50MS=250MS{m=0;P1=~(0X01<<i);//P1接8個(gè)LEDif(++i==8)i=0;}}