topic Re: Use pin 2.9 as RXD for Uart2 (Lpc1769) in LPC Microcontrollers

Use pin 2.9 as RXD for Uart2 (Lpc1769)

lpcware — Wed, 15 Jun 2016 17:34:41 GMT

Content originally posted in LPCWare by Scorpio on Tue Nov 26 03:35:45 MST 2013
Can anybody to help me? I try to use the pin 2.9 as RXD for the uart 2 (Lpc1769). I use Lpcopen and setup pin in function mode (2), as input and initialize at state low. I connect the data out from a rfid module but the interrupt of uart is never fired up. If i use the same rfid module and config the pin 0.11 as RXD, everything works perfectly.

Re: Use pin 2.9 as RXD for Uart2 (Lpc1769)

lpcware — Wed, 15 Jun 2016 17:34:42 GMT

Content originally posted in LPCWare by mc on Tue Nov 26 23:08:17 MST 2013
Hi Scorpio,
Are you using our evaluation board or you have your own customized board?

Re: Use pin 2.9 as RXD for Uart2 (Lpc1769)

lpcware — Wed, 15 Jun 2016 17:34:42 GMT

Content originally posted in LPCWare by Scorpio on Tue Nov 26 23:38:41 MST 2013
Hi mc,

I use the LPC1769 LPCXpresso board separately for testing. I need this pin to work for a customized board of our company. If i drive the pin at ground for a moment i can get the interrupt from the uart (2). Then i can see some data at my uart buffer.

Re: Use pin 2.9 as RXD for Uart2 (Lpc1769)

lpcware — Wed, 15 Jun 2016 17:34:43 GMT

Content originally posted in LPCWare by Scorpio on Wed Nov 27 03:22:22 MST 2013
Thank you very much. I found the solution.

Re: Use pin 2.9 as RXD for Uart2 (Lpc1769)

lpcware — Wed, 15 Jun 2016 17:34:44 GMT

Content originally posted in LPCWare by Pacman on Wed Nov 27 10:28:10 MST 2013
What was the problem ?