serial ports does not work

Hello,

I have come up with a strange problem.
I am running an application on my mini2440(Linux) which uses its one of the
serial ports.
But the communication stops after certain amount of data has been
communicated.
I tried all the serial ports (ttySAC0, ttySAC1, ttySAC2). But same thing
happened.

When I used USB port (converted to serial (ttyUSB0)using serial to usb
converter) on mini2440, the same application worked fine.

Is there any problem with serial ports...?

How long does it works for?  Consistently?

Kernel and rootfs?

Using serial ports, the application stops at a particular stage when fixed
amount of data has been communicated (say 1kb).
No such problem with ttyUSB0..
I have to use serial port only..

Kernel- 2.6.32.2
rootfs - root_qtopia

Sounds familiar, but think it was quite awhile on this or another mini2440
forum.

Lots of hits on <serial port not working> here and a few more interesting
ones at:

http://groups.google.com/group/mini2440/search?group=mini2440&q=seri...

Good luck

Is it because i am transmitting huge amount of data?

1kb is not a huge amount of data.  About 1 second at 9600 baud.

Think there were some issues on really BIG files and transferring files in
some unusual format.

Try searching these forums as well:

http://billforums.station51.net/
http://groups.google.com/group/mini2440

hii,
m using tiny6410,n default linux os...m not able to understand y my data is
nt being receive by serial port 0f friendly arm..
it transmit d data to my PC..n gives n error [root@FriendlyARM /]#
efdgfdgfgf
-/bin/sh: efdgfdgfgf: not found when i feed d data from PC on terminal
can suggest some solution??
thnakz

Try sending "ls -la" and hit the return key.

What do you see?

@orbit: can you please explain more precise what you are doing, and what
you want your Tiny6410 to do? What data do you want to exchange via the
serial line.

> [root@FriendlyARM /]# efdgfdgfgf
> -/bin/sh: efdgfdgfgf: not found

If you have typed the "efdgfdgfgf" string at your host's serial terminal
everything seems okay. The shell at your Tiny6410 responds correctly with
an error message, due to it tries to run the program "efdgfdgfgf" which
does not exitsts on your Tiny6410.

What do you expect instead?