• 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...
  • 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+...
  • 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...
  • 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...