E1 GPIO pins are all in 1V

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luisjo.pepis
Posts: 5
Joined: Wed Jun 22, 2016 4:55 pm

E1 GPIO pins are all in 1V

Post by luisjo.pepis » Sat Sep 24, 2016 12:53 am

Hello, I am trying to write my first python program for Red Pitaya and all I want to do is turn a Pin On. Before starting I wanted to know how much Voltage each pin has by default and found out all my DIO*_P pins have 1.3V, since they should work with 3.3V I am concerned they could be working incorrectly. If someone knows if this is OK I would appreciate the response.

Thanks

luisjo.pepis
Posts: 5
Joined: Wed Jun 22, 2016 4:55 pm

Re: E1 GPIO pins are all in 1V

Post by luisjo.pepis » Sat Sep 24, 2016 1:05 am

Also when I do the DIG:PIN? I get ERR! 1 message

Nils Roos
Posts: 1441
Joined: Sat Jun 07, 2014 12:49 pm
Location: Königswinter

Re: E1 GPIO pins are all in 1V

Post by Nils Roos » Sat Sep 24, 2016 3:27 pm

I wanted to know how much Voltage each pin has by default and found out all my DIO*_P pins have 1.3V, since they should work with 3.3V I am concerned they could be working incorrectly.
By default all DIO pins are inputs without pullups or pulldowns, so what you measure is the floating voltage of a high impedance input.
Also when I do the DIG:PIN? I get ERR! 1 message
If you literally only issue "DIG:PIN?", the error means that the parameter from which pin to read is missing.

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