Hello Christian,

On Mon, 29 Mar 2010 13:27:31 +0200, "Christian Vogel" vogelchr@vogel.cx wrote:

I'm using a self-made cable consisting of a known good FT232R converter @ 3.3V and a cut off headset cable (that also worked flawlessly without any noise on another mobile phone before). My C123 also looks pristine. I manage to upload and run hello world successfully in maybe one out of ten attempts, often have to remove the battery because the phone just gets stuck. So I have ordered a new cable from Akku-King as suggested on the Wiki.

My experience: I work under Windows with Cygwin so the OS internals how the serial port is handled are (totally) different than Linux. With the non-blocking variant of "osmocon" it was nearly impossible to download the code to the phone in a reliable way. So I had to apply an ugly hack to my version which basically switches the serial connection to "blocking mode" during the download phase. This way it works rather reliable here (regardless of using a "real" RS232 port or an USB to serial converter).

So you might experience the same problem instead of a bad cable. You can try the attached patch to "osmocom.c". The patch is not for the latest GIT version, however it should be quite easy to apply it to the current on. Again, its an ugly hack, but it works for me.

Best regards, Dieter

Dieter Spaar, Germany spaar@mirider.augusta.de