• Cortex-M4 setup vector table for external interrupts

    Jo Van Montfort
    Jo Van Montfort

    I don't want to setup the vector table for all my external interrupts. For instance I only need the timer4 IRQhandler at IRQn 30. How can I make an offset in the table? Is this necessary?

    • Answered
    • over 5 years ago
    • System
    • Embedded forum
  • WFI Instruction

    Arun
    Arun

    Hi,

    I want to use the wfi instruction in my code. I'm sending a command to a module and wait for the reply.

    I have configured UART communication with the module. Will it be good to use wfi() instruction? I know that it will turn  the cpu to power down…

    • Answered
    • over 3 years ago
    • System
    • Embedded forum
  • Wake-up time from WFI

    EyalB
    EyalB

    How long does it take to wake up from from WFI once an interrupt occurs? 

    What system parameters does the answer depend on?

    What's turned off in the CPU (and elsewhere) while WFI is underway?

    I'm using NXP i.MXRT1050 (Cortex M7) and I'm experiencing…

    • over 1 year ago
    • System
    • Embedded forum
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