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waheed901
waheed901
Associate III
August 13, 2015
Question

PROBLEM: STM32F4 External Pulse counting by using HAL Libraries

  • August 13, 2015
  • 3 replies
  • 836 views
Posted on August 13, 2015 at 07:26

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    3 replies

    Amel NASRI
    Amel NASRI
    ST Technical Moderator
    August 13, 2015
    Posted on August 13, 2015 at 15:15

    Hi w.a,

    I think that the counting has to be done in the call back of the timer's IRQ handler.

    You may refer to the example STM32Cube_FW_F4_V1.7.0\Projects\STM324xG_EVAL\Examples\TIM\TIM_InputCapture to get some insight.

    -Mayla-

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    Tesla DeLorean
    Tesla DeLorean
    Guru
    August 13, 2015
    Posted on August 13, 2015 at 17:56

    He's NOT asking about Input Capture, which btw has some grave math issues.

    What's missing are External Clock Source examples for the TIM, using HAL

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    waheed901
    waheed901Author
    Associate III
    August 14, 2015
    Posted on August 14, 2015 at 03:57

    Thanks Mayla and Clive for the replies:

    Mayla, I have gone through the inputcapture program, in fact I am using that for frequency counting by using internal clock on the  interrupt generated by the external signals, but this project is some what different, I want to have just counts of the external rising pulses but unable to configure by using HAL libraries. I am just a starter to board things, so need step by step guidance/examples to understand and implement things. 

    Clive is right, HAL's examples and guidance is some what limited, while there are lot many examples/forums/posts of Firmware available. 

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