Untraceable problem with Minicom

[Ulf Samuelsson]

Shahnewaz Chowdhury skrev:
> Dear all,
> 
> I am facing an untraceable problem with minicom. Allow me to provide proper 
> details so that it will be easier to provide assistance.
> 
> I am using a desktop PC with Ubuntu 10.10. It has only one serial port (ttyS0) 
> and I have verified that using the command " dmesg | grep tty ".
> 
> My development board is called HDP6410, which is a clone of the SMDK6410. The 
> processor is S3C6410 with ARM 1176 JZ(F)-S core. After I start minicom, when I 
> connect the board to the pc using a null-modem cable and power up the board I am 
> supposed to see booting updates on minicom, followed by a prompt that would 
> allow me to access the board. However, I do not see anything. I know that the 
> serial port on the pc and the serial cable are fully functional because I do get 
> all the booting updates and prompt when I use a custom serial communication 
> software provided with the board. However, I want to use minicom because the 
> custom software provides no means of transferring files.
> 
> I added my username to the following groups : dialout, uucp and tty.
> 
> I have also checked that ttyS0 has read/write permissions.
> 
> My settings in minicom are as follows:
> 
> Serial Device                           : /dev/ttyS0
> Lockfile Location                     : /var/lock
> Bps / Par / Bits                         : 115200 8N1
> hardware flow control               : no
> software flow control                : no
> 
> I have tried running minicom both as normal user and root, but I still get no 
> output on the console when I power up the board. I know for sure that the serial 
> port on the board is working fine and it does send messages once I power up the 
> board. Something is wrong on the PC side. For some reason when I run minicom, 
> the connection is probably not established on the PC side.
> 
> Am I missing any essential configurations / settings ?
> 
> I would highly appreciated some guidance on this. I have been trying for a week 
> now without any positive result. Please help.
> 
> Sincerely,
> Shan
> 
I would connect my host PC to another PC, and see if THAT works.

What does the modem init strings do you your board?
Are they cleared?

BR
Ulf Samuelsson
> 
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