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arunease
arunease
Associate III
January 28, 2016
Question

Clock configuration

  • January 28, 2016
  • 3 replies
  • 767 views
Posted on January 28, 2016 at 09:35

Hi, 

i am designing a board based on f329. The problem is,   i have a red mark on the clock configuration on HSI(16MHZ) and also 48MHZ clocks. when i am configuration with HSI(16MHZ). Could anyone tell me why ?

i have attached the screnshot. 
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    3 replies

    Nesrine M_O
    Nesrine M_O
    Associate
    January 28, 2016
    Posted on January 28, 2016 at 10:17

    Hi emb_begin,

    Could you please give us the right STM32 part number that you use, so we can help you?

    You can set the clock value you need as target and CubeMX will do needed claculation for other parameters (M, N, P, Q).

    -Syrine-

    arunease
    aruneaseAuthor
    Associate III
    January 28, 2016
    Posted on January 28, 2016 at 11:21

    its stm32439I.

     Do you have any example or configuration file for selecting HSI as clock source for PLL?
    Amel NASRI
    Amel NASRI
    ST Technical Moderator
    January 28, 2016
    Posted on January 28, 2016 at 15:49

    Hi emb_begin,

    Please refer to

    http://www.st.com/st-web-ui/static/active/en/resource/technical/document/user_manual/DM00104712.pdf

    and mainly the section ''Clock tree configuration view''. It describes how to use CubeMX for clock configuration.

    CubeMX allows you to set a target frequency and it calculates other parameters based on this target and clock source.

    -Mayla- 

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