• Why or how does SysTick interrupt wakeup the processor?
    Hello all, I am confusing by SysTick interrupt behavior. Even if SysTick clock was processor clock, the processor woke up from Sleep or DeepSleep mode by SysTick interrupt. My understanding is that the...
  • SysTick
    Hi guys, I am trying software timers without using interrupt SysTick->CTRL = 0x5; SysTick->LOAD = 0xFFFFFF; SysTick->VAL = 0; when start the program, what will happen with SysTick->VAL = 0; it...
  • Systick precision
    Hi all, To prove that my code was configuring the systick counter correctly, I did a small test. To measure the interval length between each SysTick interrupt handler I used SWV in combination with...
  • Changing interrupt priority to prevent nesting
    Hi, I'm working on M0+, but the question applies to M3 or M4 too. I have the following situation: 2 interrupt sources inject events on a state machine that must handle each event separately (not nested...
  • Problem: WFI instruction slowing down SYStick interrupt
    I've configured my Infineon relax kit for max frequency(120 MHz). I've set my SYSTick for a periodic interrupt of 10 ms. For power saving, I use a WFI assembler instruction whenever my processor is idle...