Timer counting experiment-EEWORLD

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#include
typedef unsigned char u8;
typedef unsigned int u16;
sbit led = P1^0;
u8 timer;
void main (void)
{
   TMOD = 0x01; //Set TMOD to make T0 work in 16-bit timing.
   TH0 = (65535-50000) / 256;
   TL0 = (65535-50000) % 256;
   EA = 1; //Open the total interrupt
   ET0 = 1; //Open the overflow interrupt of timer 0
   TR0 = 1; //Start timing
   while(1) //The function is to end the program, otherwise the program will keep running here;
   {
       ;
   }
}
//Implementation method 1
void timer0_service(void) interrupt 1
{
   TH0 = (65535-50000) / 256;
   TL0 = (65535-50000) % 256;
   //50ms has been set
   timer ++;
   if (timer == 20)
   {
       timer = 0;
       led = ~led;
   }
}

/**************************** Stay hungry, Stay foolish. @Rocky**************** **********/

Keywords：Timer Reference address：Timer counting experiment

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