Using UART3

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by jbperkins on Sun Oct 30 13:16:58 MST 2011
I'm trying to modify the UART example from NXP_LPCXpresso1769_MCB1700_2011-02-11.zip to use UART3 instead of UART0.  It's not working.  Before I go any further let me start with simple question.

Is there something that I have to do to enable UART3?  I read something that made me think that UART3 defaults to off.  I tried setting bit 25 of PCONP to 1 (which should turn it on??) but that doesn't take.  When I looked at the PCONP register all of the UART bits where set to 0.