UP Squared Pro, High Speed COM1

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ryan_mulder_antrum
ryan_mulder_antrum New Member Posts: 3 ✭
in UP Board Linux

Can I configure the baud rate on COM1/2 on the Up Squared Pro to be higher than 115200?

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  • Wilbert
    Wilbert New Member Posts: 168 ✭✭✭
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    Hi Sir,

    You can try it, the IC specification can support 1M (minimum).
    I have tried it under Ubuntu and tested that 921600 baud rate can be used.

    Best Regards,
    Wilbert Lee.

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  • ryan_mulder_antrum
    ryan_mulder_antrum New Member Posts: 3 ✭
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    Hi @Wilbert ,

    I did try in Ubuntu 20.04, and the command to set the baud rate succeeded, but the baud rate does not actually change unless I choose a rate less than or equal to 115200.

    Could you provide more details on what worked for you?

    Thanks,
    Ryan

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  • Wilbert
    Wilbert New Member Posts: 168 ✭✭✭
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    Hi Sir,

    I use the Minicom tool.
    Directly use the internal settings of the tool to set baudrate as 921600.
    When the measurement signal comes out, it can be seen that the width is about 1us, and the Baudrate is pushed back to 921600.

    Best Regards,
    Wilbert Lee

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  • ryan_mulder_antrum
    ryan_mulder_antrum New Member Posts: 3 ✭
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    Hi @Wilbert,

    Can you confirm that the Up Square Pro you're using has the Celeron processor?
    I'm unable to succeed using stty:
    $ stty -F /dev/ttyS0 460800 stty: /dev/ttyS0: unable to perform all requested operations
    $ stty -F /dev/ttyS1 460800 stty: /dev/ttyS1: unable to perform all requested operations

    Thanks,
    Ryan

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