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pull up gpio input mraa

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Sahaj Sarup
Sahaj Sarup New Member Posts: 21 ✭
in UP Board Hardware Specification
does it support gpio in with pullup configuration for internal resistors
this is my circuit right now
gpio_x --> resistor --> switch --> gnd pin
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  • Dan O'Donovan
    Dan O'Donovan Administrator, Moderator, Emutex Posts: 241 admin
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    No, unfortunately the UP board doesn't support configurable pull-up resistors for the 40-pin I/O interface.
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  • jwessel
    jwessel New Member Posts: 11 ✭
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    Is this true because of some kind of hardware limitation with the way the header is brought out from the FPGA? The data sheet on the Altera MAX10 states an weak internal pull up is available on all I/O pins.

    I have multiple custom hardware shields that do not work because of the inability to set the internal pull up, like the Raspberry Pi hardware. I was contemplating trying to make extension cable with some pull up resistors for the sole purpose of trying one of the shields. Is there any progress on the ability to load a custom FPGA image where the weak pull up could be enabled?

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