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標題: 單片機定時器方式二仿真（led不亮，請問哪出錯了） [打印本頁]

作者: dzl111 時間: 2021-4-18 12:22
標題: 單片機定時器方式二仿真（led不亮，請問哪出錯了）
#include <reg51.h>
typedef unsigned int u16;
sbit led0 = P1^0;
sbit led1 = P1^1;
u16 num;
void main(void)
{
      TMOD = 0x02;
      TH0 = 156;
      TL0 = 156;
      ET0 = 1;
      TR0 = 1;
      EA = 1;
   while (1)
      {
               if(num == 10000)
               {
                     num = 0;
                     led0 = ~led0;
               }
      }

}
void T0_time(void) interrupt 2
{
      num++;
}

作者: tyrl800 時間: 2021-4-18 19:56
把void T0_time(void) interrupt 2改成void T0_time(void) interrupt 1

作者: dzl111 時間: 2021-4-18 20:16

tyrl800 發表于 2021-4-18 19:56
把void T0_time(void) interrupt 2改成void T0_time(void) interrupt 1

#include <reg51.h>

typedef unsigned int u16;

sbit led0 = P1^0;
sbit led1 = P1^1;

u16 num;

void main(void)
{
// Write your code here
   TMOD = 0x52;
   TH0 = 0x9C;
   TL0 = 0x9C;
   TH1 = (65536-100)/256;
   TL1 = (65536-100)%256;
   EA = 1;
   ET0 = 1;
   TR0 = 1;
   ET1 = 1;
   TR1 = 1;

   while (1);

}

void T0_time(void) interrupt 1
{
num++;

if(num==10000)
{
num = 0;
led0 = ~led0;
}
}

void T1_time(void) interrupt 3
{
TH1 = (65536-100)/256;
TL1 = (65536-100)%256;

if(TF1==1)
{
TF1 = 0;
led1 = ~led1;
}
}
那請問這個T1為計數器時，給它記100個脈沖，led取反，為什么仿真時候不亮呢

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