PIN 43

Created Mon, 12 Nov 2012 18:57:36 +0000 by thejoerusso

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?

EmbeddedMan

Mon, 12 Nov 2012 19:19:58 +0000

Which board are you using?

*Brian

thejoerusso

Mon, 12 Nov 2012 19:49:50 +0000

ChipKit Max32

EmbeddedMan

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?

*Brian

majenko

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:

[url]http://www.digilentinc.com/Data/Products/CHIPKIT-MAX32/chipKIT%20Max32_rm.pdf[/url]

thejoerusso

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.

EmbeddedMan

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.

*Brian