help for lpcxpresso base board rev A with LPC1768

[lpcware]

Content originally posted in LPCWare by sajan.k on Sat Jan 03 11:57:35 MST 2015
hai...........

I trying to create one  UART application for just sent some data to hyper terminal but i am stacking.................
because i am using lpcxpresso base board REV A  EA
here i can successfully dump the code to my target board(LPC 1768 ). But nothing show  on hyper terminal....
my code for  UART0 channel , and i am using CP210x USB to UART bridge...
so my doubt is can use internal USB to UART bridge of lpcxpresso base board REV A or i want to use external USB to UART bridge for communicate with hyper terminal ................
  i hope  somebody will help me.............
thanks......................

[lpcware]

Content originally posted in LPCWare by sajan.k on Thu Jan 08 21:31:21 MST 2015
ok guys its working................... ;-)
thanks for your valuable help

[lpcware]

Content originally posted in LPCWare by andersrosvall on Wed Jan 07 05:35:28 MST 2015
Hi,
As owner of an LPCXpresso Base Board you have received a product serial number that you can register on our website (www.EmbeddedArtists.com) and get access to a support site for the board.
there you can download schematic and user manual/guide for both rev A and rev B boards.
There is also sample code.

It is very unclear what you are trying to do. The RS232 interface on the LPCXpresso base board is not directly connected to the LPC1769 MCU, but rather to U19 (SC16IS752).
UART3 on the LPC1769 is connected to the on-board UART-to-USB bridge. UART0 is not connected to anything special.

Kind Regards,
Anders @ EA

[lpcware]

Content originally posted in LPCWare by sajan.k on Tue Jan 06 22:00:38 MST 2015
Ok I already read the LPCXpresso base board REV B document, and set the jumper as per the that document.But the main problem is my LPCXpresso base board version is[u]  REV A
[/u]so let me know the following things
1.can I follow LPCXpresso base board REV B  document for my LPCXpresso base board REV A...........?
2.where can I get  LPCXpresso base board REV A document....?

I am also try remove my target board (LPC1768) from base board and connect my converter(USB to UART ) with target board. in this cause it working properly. But not working whenever I mount target board on the base board and use base board pins.............

[lpcware]

Content originally posted in LPCWare by Superfred on Tue Jan 06 07:06:45 MST 2015
Hi Sajan,

Here are some ideas:
1.TX pin of the converter must be connected to the Rx pin of the Microcontroller, and Rx to Tx.
2. Check your Pinsel registers if you connect the correct pins to the UART.
3. Is the Baudrate correctly set?

And have a look here:
http://www.lpcware.com/content/forum/1769-example-uart-for-receive
http://www.lpcware.com/content/forum/adc-lpc1769-please-help (Post#9)

Fred

[lpcware]

Content originally posted in LPCWare by sajan.k on Tue Jan 06 06:55:51 MST 2015

---

Quote: Superfred
Hello Sajan,

I am using an USB to Serial Converter (TTL level) without problems.
I never used
As terminal program I use this:
http://www.parallax.com/downloads/parallax-serial-terminal

There can be many problems why it is not working, it could be:
Wrong Comport
Windows Driver
USB Converter defect
cabling problem (maybe tx/rx pins not crossed)
Microcontroller code problem

As first test i suggest to disconnect the converter from the microcontroller and connect ( on the converter) the tx to the rx pin.
If you type a character on the keyboard you should receive it back on the screen, if you open the connection not.

Fred

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Yes Superfred I just test my my converter(CP210x USB to Uart TTL level) as per you described above..so my converter is working...
and I test with sample code only......

[lpcware]

Content originally posted in LPCWare by lpcxpresso-support on Mon Jan 05 04:39:51 MST 2015
Make sure that you have read the documentation for the baseboard available from:

http://www.embeddedartists.com/products/lpcxpresso/xpr_base.php

In particular, you need to make sure that you have jumpers correctly configured and the baseboard/target boards powered correctly.

Regards
LPCXpresso Support

[lpcware]

Content originally posted in LPCWare by R2D2 on Mon Jan 05 01:11:26 MST 2015

---

Quote: sajan.k
please help me guys..........

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How?

You don't post your code, you don't post a schematic and you don't post a converter description  ;-)

Which UART are you using? Is your converter a 3.3V converter?

Why are you using this crappy Hyper Terminal?

The rest of the world is using Tera Term:

http://ttssh2.sourceforge.jp/index.html.en

[lpcware]

Content originally posted in LPCWare by Superfred on Mon Jan 05 01:00:22 MST 2015
Hello Sajan,

I am using an USB to Serial Converter (TTL level) without problems.
I never used
As terminal program I use this:
http://www.parallax.com/downloads/parallax-serial-terminal

There can be many problems why it is not working, it could be:
Wrong Comport
Windows Driver
USB Converter defect
cabling problem (maybe tx/rx pins not crossed)
Microcontroller code problem

As first test i suggest to disconnect the converter from the microcontroller and connect ( on the converter) the tx to the rx pin.
If you type a character on the keyboard you should receive it back on the screen, if you open the connection not.

Fred

[lpcware]

Content originally posted in LPCWare by sajan.k on Sun Jan 04 22:39:02 MST 2015
please help me guys..........