I want to decrement a variable inside a SysTick function, which is decremented every SysTick_ISR call. I would then call this variable inside a function to check if it is zero,
perform an action, and reset the variable.
void SysTickHandler(void)
{
if (Timer_var) Timer_var--;
}
unsigned char Use_Timer(void)
{
if (!Timer_var)
{ //do something
Timer_var = TIMER_VAL;
}
return SUCCESS;
}
#define TIMER_VAL 3000 //3sec
Is there a function similar to SysTickHandler in mrr lab_07 where I can decrement the variable?
It would be nice if this function is inside the mss part of the project.
