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Keil breakpoint on port change

PeterS

Hi,

      I am using Keil uVision V5.27.1.0 to compile and debug a code produced for an STM32L072 micro

      Is it possible to set a breakpoint when an IO port changes and if so, instructions about how to do it would be appreciated.

Thank You

Regards

Parents
  • 0 in reply to Andy Neil

    Pretty sure the Core doesn't actively probe memory to see it change, you have to read a memory location for the breakpoint unit to inspect it.

    The CM0(+) parts also tend to be seriously lacking debug resources to save transistors, so you need to approach the diagnostic exercise in a different direction.

    For a GPIO pin, use it to trigger an EXTI, or input to a TIM if that's mappable to the pin in question.

Reply
  • 0 in reply to Andy Neil

    Pretty sure the Core doesn't actively probe memory to see it change, you have to read a memory location for the breakpoint unit to inspect it.

    The CM0(+) parts also tend to be seriously lacking debug resources to save transistors, so you need to approach the diagnostic exercise in a different direction.

    For a GPIO pin, use it to trigger an EXTI, or input to a TIM if that's mappable to the pin in question.

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