chipKIT® Development Platform

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ChipKit Uno32 with GPS Receiver

Created Sun, 11 Jan 2015 00:58:19 +0000 by afpds


Sun, 11 Jan 2015 00:58:19 +0000

Hello Everybody,

My name is Andre, Im from Portugal and I have some problems to programme my Uno32 with a GPS receiver.

How can I make the transmission at two serial ports (RX|TX)?

When I make the connection at RX TX from my ChipKit board to my GPS, a LED gets on and I cant Compile with Flash.

I really need some help. :? :cry:

Thank you!


Sun, 11 Jan 2015 01:05:10 +0000

Using the RX/TX pins 0 and 1 is not a good idea. It is shared, as with most Arduino boards, with the on-board USB serial connection. You can't use it for both that and for communication with another external serial device. That includes uploading new code.

But the UNO32 does have a second serial port, on pins 39 (RX) and 40 (TX).

You can access that port by using Serial1 instead of Serial:

if (Serial1.available()) {
  int c =;
... etc ...