Got another silly question....

Is it possible to invert the default state of the GPIO pins? I've found 
that pulling them up will bring them true, Hardware wise the easiest way 
I've found to make the inputs capable of handling multiple input voltages 
will require them to be pulled down when activated, so I'd have to pull 
them up to a "false" state. This would only be something I need to do with 
the gpio inputs.

On Friday, May 10, 2019 at 6:40:30 PM UTC-4, Michael Brown wrote:
>
> Ok
> Great to hear you have progress.
>
> On a side note:
> I managed to find the bug in the ADC system and the fix got out into the 
> socfpga-rbf deb yesterday.... :-=)  
>
> On Friday, 10 May 2019 22:26:13 UTC+2, justin White wrote:
>>
>> When you are laying out your own custom DExx interface board, you don't 
>>> have to stay restricted to allready made pinouts.
>>
>> Yeah that I know,  Like I said, I was mostly trying to determine how many 
>> pins each tag type used and it's actual usage. I was a bit hung up on the 
>> ADC thing because it didn't directly correspond with the pin tags but now I 
>> realize it's an SPI interface.
>>
>> I'll have to come back to all of the above info once I try to create the 
>> new FPGA project files, for now I think I get the idea.
>>
>> Purging the installed Machinekit packages and installing the new ones as 
>> you suggested got HALshow working right away. 
>>
>> I've pretty much got my encoder interface and output hardware sorted, I 
>> use 24v I/0 but it should handle multiple voltages.
>>
>

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