• 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...
  • Cortex M4 - Returning from Interrupt
    Hi, I'm using the STM32 F407 (Cortex M4), and I am also only using assembly in uVision IDE. So far I have managed to setup a ISR for a pushbutton generated interrupt via GPIO. This all works, I get...
  • When does a Cortex Mx wake up from "wfi" ? Is it configurable?
    Hello, Question about the "hint" instruction - WFI. The armv7m arch manual (i'm using DDI0403_B, latest?) says it will come out of the suspended / low-power state if: • A reset. • An asynchronous...
  • maximum level of functions than can be called within
    function1 calling function2, function2 calling function3, function3 calling function4 and so on. Maximum stage depends upon Stack Size, right? How to identify Stack Size and if required how to change...