Home arrow Support arrow Forums

Luminary Micro Forums
home | post reply | threaded view | PDF | help | rules
Boardwalk :: Forum List Luminary Micro Forums General Discussion
<< Start < Prev 1 2 Next > End >>

rsmith

Junior Boarder

2008/08/20 17:30

LM3S6965 Uart Echo demo

Hello All,

I've had the EK-LM3S6965 demo board for a few days. I've been trying to get the UART Echo code working.

I've searched these forums and tried changing the baud from 115200 to 9600 without any noticeable difference.

After programming and connecting to either realterm or hyperterminal, I typically reset the board with the reset button. It will print out the text in the terminal as expected, but when I type nothing else happens.

I was wondering if anyone had some suggestions. My guess right now is that maybe my drivers aren't quite right.

Edit: Am I misunderstanding what this is supposed to do? Since I'm connecting to the UART via a terminal, will it echo what is typed back, or is it all done internally and nothing is visible?


Cheers,
Ryan

Post edited by: rsmith, at: 2008/08/22 17:10

login or register to reply

wella

Platinum Boarder

2008/08/29 07:44

Re:LM3S6965 Uart Echo demo

Hi,

i have tried it on LM3S8962 Evaluation Kit and it works fine. However I don't beleive Windows HyperTerminal so I used another program for serial port. It is also possible some mismatch in ft232 driver if you use virtual com setting.

Is 115200 working? If yes, are you sure, that you are uploading the right one .bin? Try compile it again and check date.

Martin

login or register to reply

rsmith

Junior Boarder

2008/09/03 15:11

Re:LM3S6965 Uart Echo demo

Thanks for the tip. I used both Realterm and Hyperterminal. I don't have my kit today, so I will try the new drivers tomorrow and see if that helped.

Regards,
Ryan

login or register to reply

cb1

Platinum Boarder

2008/09/03 18:26

Re:LM3S6965 Uart Echo demo

Agree that hyperterm is a bit flaky. It is possible to prevent "echo" thru configuration of hyper-term. Go into properties & you should be able to review and set all options...

login or register to reply

rsmith

Junior Boarder

2008/09/04 14:49

Re:LM3S6965 Uart Echo demo

I'm not sure if this was it, but in RealTerm 2.0.0.57, I changed it to half duplex mode because in the tooltip it reads, "Shows outgoing chars in the terminal."

Also, upon close inspection of the Char Count, I noticed that the character count was always double what was being shown before making that change.

Also, the Stellaris Virtual Com Port driver was set to 9600, I changed it to 115200 to match the software and the realterm connection settings.

Now I'm seeing red input characters and yellow output characters. The "Enter Text: " is printed yellow, then one yellow character for every red character typed after. So I presume it is working.

It seems like the half duplex mode change was the most significant, even if it isn't correct it allows me to put this problem to rest finally.

Thanks for all the suggestions :-)

Cheers,
Ryan

login or register to reply

d51hqe

Fresh Boarder

2008/10/28 05:43

Re:LM3S6965 Uart Echo demo

Hi
I'm having the same problem. I have corrected the baud rate of the com port as suggested and I'm using half duplex mode in the same version of real term.

I am currently using the example uart_echo program provided. When i reset the board it prints "enter text:" and i can then type characters in red on the screen but no yellow characters are received.

Any help would be greatly appreciated

Linzi

Post edited by: d51hqe, at: 2008/10/28 05:43

login or register to reply
<< Start < Prev 1 2 Next > End >>
Boardwalk :: Forum List Luminary Micro Forums General Discussion

Luminary Micro Forums