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    BMF055- Program halts on custom design

    kgoveas
    Community Moderator

    Re: BMF055- Program halts on custom design

    Hi,

    It seems like an issue with the crystal or GCLK initialization. Are you using the crystal?

    The examples may not have been updated with the latest Board Support Package drivers from Atmel and hence may not have the latest work-arounds in the underlying drivers. Shortcut to the SAMD20J18 Errata sheet.

     

    RknCdacT
    Member

    Re: BMF055- Program halts on custom design

    @FAE_CA1,

     Thank you for your reply. 

    @Vincent

    Will share by private message.

    @kgoveas,

    We are not using the crystal. Its the same way as in the default code available for download in Data stream example. Also, the BMF055 is working without issues in the shuttle board. 

     

    RknCdacT
    Member

    Re: BMF055- Program halts on custom design

    Hi FAE_CA1,

    Please support us in solving the issue with the BMF055 IC.

    Also, is it possible to share the BMF055 shuttle board layout with us? It would help us to compare with our custom PCB and resolve any errors that might have been created while designing our PCB. 

    Thanks & regards,

    Rajeev

     

    Vincent
    Community Moderator

    Re: BMF055- Program halts on custom design

    In your previous comments,  you said you are not using external crystal  but i found 32KHz crystal on your schematic.  

    Does it mean you just not install it on PCB?

    If it is the case,  you can take a look the errata which my colleague shared to you in comments.  there is some extra things need to be take care in your code.  

    I also attached the BMF055 shuttle schematic in the attachment.  

    Vincent
    Community Moderator

    Re: BMF055- Program halts on custom design

    Could you also try to add GND on C1 and C5?  

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