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Last Post 30 May 2017 03:13 PM by  Adam Ford
uP_D8 thru uP_D14 data lines as GPIOs
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L DiRuscio
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Posts:44


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30 May 2017 01:07 PM

    We would like to use the signals labeled uP_D8 thru uP-D14 as GPIOs? They are labeled as either processor data lines, or GPIO on the schematic.

    How are these lines configured as GPIO (the same as other GPIOs via /sys/class/gpio system calls?) and what will prevent them from toggling during boot-time until configured as GPIOs?
    Adam Ford
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    Posts:794


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    30 May 2017 03:13 PM
    uP_D8 through D16 are all used as part of the NAND flash interface. While they technically can be configured for GPIO, doing so will break the NAND interface. Is that really desired?

    Our hardware checklist is here: http://support.logicpd.co...rtalid=0&EntryId=637

    (You'll need to be logged into the site for the download to work).

    It lists all the pins necessary for NAND operation.


    adam
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