26. Using the timer interrupt in the microcontroller, set every precise time measurement in the main process while (1) {}

 void  Timer0_isr () interrupt 5  {countmilliseconds  + +; //  is only responsible for self-addition, add to the maximum and start again from 0  }u16 Setdelay (U16 t) { return  (                                             Countmilliseconds + T-1  ); }u8 Checkdelay (U16 t)  //  returns a nonzero representation Timed end  { return  (((T- countmilliseconds) & 0x8000 ) >> 8 ); // } 

Use 1: (more general usage)

void Delay_ms (U16 W)// delay How many ms{     u16 temp     ; = Setdelay (w);       while (! Checkdelay (temp));}

Use 2:

U16 dely_500ms = Setdelay (+);  while (1) {... if (Checkdelay (dely_500ms)) {}// indicates that the timekeeping time has arrived

...
}

26. Using the timer interrupt in the microcontroller, set every precise time measurement in the main process while (1) {}