Interrupted Learning 2

#include   //header file

#define GPIO_LED P2

//External interrupt IO

sbit K3=P3^2;

sbit K4=P3^3;   //define the io port values ​​of k3 and k4 to be p3.2   p3.3

void IntConfiguration();

void Delay(unsigned int n);

unsigned char KeyValue=0;  

void main(void)

{

GPIO_LED=0X01;    // led=0000 - 0001

IntConfiguration();

while(1)

{

if(KeyValue)     //keyvalue value

GPIO_LED=_crol_(GPIO_LED,1);

else

GPIO_LED=_cror_(GPIO_LED,1);

Delay(2000);

}

}

void IntConfiguration()

{

//Set INT0

IT0=1; // Jump edge start mode (falling edge)

EX0=1; //Turn on the interrupt enable of INT0.

//Set INT1

IT1=1;

EX1=1;

EA=1; //Open the general interrupt

}

void Delay(unsigned int n)    //Delay 50us error 0us

{

    unsigned char a,b;

for(;n>0;n--)

{

     for(b=1;b>0;b--)

        for(a=22;a>0;a--);

}

}

  void Int0() interrupt 0 //interrupt function of external interrupt 0

  {

  Delay(1);

  if(K3==0) //Press P3^2 key to trigger external interrupt 0
 
  KeyValue=1; //Interrupt handler 0 will assign KeyValue to 1

  }
  void Int1() interrupt 2 //Interrupt function of external interrupt 1

  {

  Delay(1);

  if(K4==0)//When P3^3 is pressed, external interrupt 1 will be triggered

  KeyValue=0; //      Interrupt handler 0 will set KeyValue to 0

  }

//The two external interrupt hardware are connected to P3^3 and P3^2
. //For example, if the P3^2 key is pressed, external interrupt 0 is triggered, and interrupt handler 0 will assign KeyValue to 1.
//At this time, the main loop will execute GPIO_LED=_crol_(GPIO_LED,1

//); Similarly, when P3^3 is pressed, external interrupt 1 will be triggered
//, and interrupt handler 0 will assign KeyValue to 0; at this time, the main loop will execute GPIO_LED=_cror_(GPIO_LED,1).