Hi Mike... yes, I was testing between ground and the GPIO pin question (GPIO1 in my case) for voltage. 

See my later message I posted for details on what I found. 

73
Stephen
K1LNX

On Thu, Aug 4, 2016 at 9:05 AM, <mike@midnighteng.com> wrote:

Sorry,
I do have to ask the obvious,
Are you sure you are testing the output correctly ?
I believe these FLOAT and switch to ground when active.
Just like a parallel port.Don't use them so I don't know for sure.
So you need to check continuity between ground and the pin in question for activity.

...mike/kb8jnm

> I'm trying to manipulate a GPIO pin off of a URIx and I am not able to get
> it to work for whatever reason. If I send a cop,62 command to toggle it, it
> does not change the state.
>
> I found this message from Jim that was posted in June 2011:
>
> http://ohnosec.org/pipermail/app_rpt-users/2011-June/002725.html
>
> Does anyone know if this was ever implemented? This was quite some time
> ago.
>
> I might be able to use usbradio instead for my application, but prefer
> SimpleUSB as it's easier to implement.
>
> 73
> Stephen
> K1LNX
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