Created Mon, 12 Nov 2012 18:57:36 +0000 by thejoerusso
Mon, 12 Nov 2012 18:57:36 +0000
I am trying to use an existing design that uses pin 43 for basic I/O. After trying a simple sketch, I can't get it to work. I've looked at the schematic, but I'm having trouble understanding whether this pin can actually function in this way or if it is reserved for something else?
Mon, 12 Nov 2012 19:19:58 +0000
Which board are you using?
Mon, 12 Nov 2012 19:49:50 +0000
Mon, 12 Nov 2012 20:44:07 +0000
According to the Max32 schematic ([url]http://www.digilentinc.com/Data/Products/CHIPKIT-MAX32/chipKIT%20Max32_bysa_d_sch.pdf[/url]) that pin is connected to JP4. Have you read through the relevant section in the Max32 manual on JP4?
Mon, 12 Nov 2012 20:45:34 +0000
That pin is subject to the JP3/JP4 setting.
I suggest you read the board reference manual:
Mon, 12 Nov 2012 23:15:45 +0000
Thanks guys. Moving to a different pin worked. I had read about this in the docs, but I didn't realize those pins weren't useable for general I/O.
Tue, 13 Nov 2012 01:31:35 +0000
They are usable as GPIO - you just have to make sure that you have the jumper(s) in the right place.