- yes, when I replug power it start working again.
- by that I mean that when the gumstix reboot I see on my hyperterminal =
the booting process , but at the end of it Gumstix does not show the =
login prompt (I'm not able to fully understand where it get stucked =
because even during a normal booting I loose some boot info usually =
displayed due o my hack of the PXA.C and 8250.C that make the console =
using /dev/ttySA0 in place of/dev/ttyS0
Thank You for Your time.
----- Original Message -----=20
From: Craig Hughes=20
Sent: Monday, March 13, 2006 6:57 PM
Subject: Re: [Gumstix-users] Trouble with serial CF modem + pppd: =
serial port hungs after disconnection
On Mar 13, 2006, at 2:14 AM, swclimber wrote:
I adjusted and recompiled the pxa.c serial driver in order to make =
Compact Flash GPRS modem work with Gumstix.
Eveythings work fine: pppd get connected and I'm able to surf the =
The problem is that when I kill pppd (or the internet provvider cut =
the network - in GPRS network from time to time You are changed =
address) I'm not able to talk to my CF modem anymore.
If I make :
cat /dev/ttyS0 &
echo at > /dev/ttyS0
the console hangs until I Ctrl-C the command and get back a =
system call"(while before the modem returned an "OK").
At the begginning I thought it was the modem still connected to the =
network (thus not processing the AT command), but this should not be =
case since in Windows I get a different behaviour (it works).
For my application it would be acceptable also restart the modem and =
the Gumstix (in auto mode not by operator action since the system is =
remote geografic area), but even that seems not working:
seems not to take away power from the CF sockect (the led is still =
even though "cardctl status" show no board after "eject" while =
insert" it is shown back)
If I try "reboot -d 1", the processor reboot but it does not take =
from the socket and the modem still does not start working (for some =
I not able to get back my serial console either...).
I'm frustrated because I'm not able to understand where the problem =
from and I ended all the testing I thought of in order to debug the =
Any help would be greatly appreciated.
If you remove power from the boards, then re-plug it, does it then =
When you say at the end "for some reasons I not able to get back my =
serial console either", what do you mean by that?