Sunday , 16 May 2021
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ex.2 in ch11 (TIM in DMA polling mode) doesn t work


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  • #27255
    kekkoian
    Participant

    ex.2 in ch11 (TIM in DMA polling mode) doesn t work.

    i build examples from STM32CUbeIDE

    built process has no error but led is not blinking.

    Someone can help?

    #28141
    kekkoian
    Participant

    ok it works with advanced timer. Thanks!!!

    #28146
    kekkoian
    Participant

    Read Carefully
    In STM32F2/F4/F7/L1/L4 families, only the DMA2 has full access to the Bus Matrix. This
    means that only timers whose requests are bound to this DMA controller can be used to
    perform transfers involving other peripheral (except for the internal and external volatile
    memories). For this reasons, this example for Nucleo boards based on F2/F4/L1/L4 MCUs
    use TIM1 as base generator.
    In STM32F103R8, STM32F302RB and STM32F334R8, STM32L053R8 and STM32L073RZ
    MCUs TIMx_UP request does not allow to trigger transfer between memory and
    GPIO peripheral. So this example is not available for the corresponding Nucleo
    boards.


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