• Race condition between wake up event and WFI on Cortex-M3/M4
    When I read below thread in arm forum, I still not clear which one is the safety way. Cortex-M4: guaranteed wakeup from WFI? There're two solutions mentioned above, using WFE instead of WFI, and swap...
  • Cortex-M4: guaranteed wakeup from WFI?
    Note: This was originally posted on 8th August 2013 at http://forums.arm.com Hi all! I'm wondering how to ensure that the Cortex-M4 is always woken up on an interrupt from the WFI instruction when executing...
  • wfi in debug mode
    Hi, Please help me understand expected behavior of CM4 when CM4 is in debug mode and WFI is executed through single step. Does CM4 enter sleep/sleepdeep in such case ? Thanks, Sandeep
  • Processor sometimes ignoring WFI instruction
    Hello everyone, I have a problem with WFI instruction and deep sleep mode. Normally everything work correct, but sometimes processor ignore instruction WFI and continue work. I use ARM Cortex-M0+...
  • 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...