topic Re: LPC1343 - Uart in LPCXpresso IDE

LPC1343 - Uart

lpcware — Wed, 15 Jun 2016 22:42:57 GMT

Content originally posted in LPCWare by hubijo on Fri Apr 08 09:31:33 MST 2011
Hi all,

how can i send a string with the serial connection from the lpc1343 eval board to a pc with a usb to serial converter?
I tryed with the example code from codred...

thank for your help

Re: LPC1343 - Uart

lpcware — Wed, 15 Jun 2016 22:42:58 GMT

Content originally posted in LPCWare by Ajay on Fri Apr 08 09:49:28 MST 2011
You will need to use a terminal program on the PC similar to Hyperterminal and set the baud rate, # of data bits, parity, stop bits, and flow control. You also want to make sure the adaptor shows up under com ports under device manager on the PC in Ports (COM & LPT). If not, you will need to install the correct driver for the adaptor. The driver is typically downloaded from the manufacturer's web site.

Re: LPC1343 - Uart

lpcware — Wed, 15 Jun 2016 22:42:58 GMT

Content originally posted in LPCWare by hubijo on Fri Apr 08 10:08:51 MST 2011
Thanks.
I have done all this steps. I measured with the osciloscope the txd signal, but i dont see a signal. there are only 3.3V. should i do something at the code?

Re: LPC1343 - Uart

lpcware — Wed, 15 Jun 2016 22:42:59 GMT

Content originally posted in LPCWare by larryvc on Fri Apr 08 10:19:14 MST 2011

Quote: hubijo
Thanks.
I have done all this steps. I measured with the osciloscope the txd signal, but i dont see a signal. there are only 3.3V. should i do something at the code?

I will try to use my psychic abilities to see if your code needs fixing.:confused:

No, they didn't work.:(

Maybe if you post your code then we can help you figure out whether it is a software or hardware related problem.:)

One thing to check is:

TX on the LPC goes to RX on the USB adapter

RX on the LPC goes to TX on the USB adapter

Re: LPC1343 - Uart

lpcware — Wed, 15 Jun 2016 22:43:00 GMT

Content originally posted in LPCWare by hubijo on Fri Apr 08 10:39:06 MST 2011
yeees :-) this was the thing... a inverted the signals... ou man... :-$

thanks for this very useful tip! :-)

Re: LPC1343 - Uart

lpcware — Wed, 15 Jun 2016 22:43:00 GMT

Content originally posted in LPCWare by larryvc on Fri Apr 08 10:41:22 MST 2011
You are very welcome.:)