單片機定時器/計數器2工作模式-應用實例

ID:912892 · 發(fā)表于 2022-11-7 10:35

#include "reg51.h"
#define TIMS 3036
sfr AUXR  =0x8E;                         //
sfr IE2 =0xAF;                            //??IE2??????0xAF
sfr TH2 =0xD6;                            //??TH2??????0xD6
sfr TL2 =0xD7;                            //??TL2??????0xD7
sfr CLK_DIV=0x97;                      //??CLK_DIV??????0x97
void timer_2() interrupt 12       //?????/???2??????
{
   P16=!P16;                            //P4.6????
   P17=!P17;                            //P4.7????
}
main()

{
      P1M0=0;
         P1M0=0;
      CLK_DIV=0x03;       //???8??
   TL2=TIMS;                //TIMS?8????TL2???
   TH2=TIMS>>8;       //TIMS?8????TH2???
   AUXR|=0x10;             //?????/???2,
   P16=0;                      //P4.6???0,
   P17=0;                      //P4.7???0
   IE2|=0x04;                //?????2??
   EA=1;                         //CPU
   while(1);
}

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