Lin bus and auto baud detection


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Thread: Lin bus and auto baud detection277 days old

  1. #1
    Fanatical Contributor Tim's Avatar
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    Default Lin bus and auto baud detection

    Lin bus looks to be a great system for an application i'm working on. One of the main things is the slave can be really simple without needing a crystal. To resolve the usart timing its master sends it as at the start of every packet in a couple of $55 or $AA bytes for the slave device to sync its clock to.

    However I cannot find out how its done. Technically how do you set the hardware up to monitor the usart and sync its usart clock to the masters.

    Does anyone know?

    Thanks

    Tim
    Tim

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    Prolific Poster towlerg's Avatar
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    Default Re: Lin bus and auto baud detection

    Hi Tim, I looked at LIN once JOOQ. This PDF was helpful http://ww1.microchip.com/downloads/e.../00000237B.pdf
    George.

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    Fanatical Contributor Tim's Avatar
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    Default Re: Lin bus and auto baud detection

    Thanks George

    I had seen that but they do not show the source or explain how it works. You need to use the IDE to generate the code first, then i would have to figure out what it was doing and it is in C. Not a language that I'm familiar with.

    Thanks


    Tim
    Tim

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    Prolific Poster towlerg's Avatar
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    Default Re: Lin bus and auto baud detection

    I seem to remember that the source is available separetly.

    Edit. Just checked and it's here https://www.microchip.com/wwwAppNote...pnote=en012053
    Last edited by towlerg; 21st October 2018 at 15:24.
    George.

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