[Bug 263] New: gsmd doesn't receive AT reply from the modem properly.

bugzilla-daemon at bugzilla.openmoko.org bugzilla-daemon at bugzilla.openmoko.org
Tue Mar 13 09:01:57 CET 2007


http://bugzilla.openmoko.org/cgi-bin/bugzilla/show_bug.cgi?id=263

           Summary: gsmd doesn't receive AT reply from the modem properly.
           Product: OpenMoko
           Version: unspecified
          Platform: Neo1973
        OS/Version: Windows XP
            Status: NEW
          Severity: blocker
          Priority: P2
         Component: gsmd
        AssignedTo: laforge at openmoko.org
        ReportedBy: tonyguan at fic-sh.com.cn


following the instructions given by harald in wiki sites:
http://wiki.openmoko.org/wiki/Manually_using_GSM
voice call can be made successfully without problem.

while using gsmd will not act well. the phenominon is gsmd launched, but seems 
like receiving no echo messages from the gsm module.
ue Mar 13 15:40:37 2007 <1> atcmd.c:443:atcmd_drain() c_iflag = 0x00000000, 
c_oflag = 0x00000000, c_cflag = 0x00001cb2, c_lflag = 0x00000a30
Tue Mar 13 15:40:37 2007 <1> atcmd.c:428:atcmd_submit() submitting command 
`ATE0V1'
Tue Mar 13 15:40:37 2007 <1> atcmd.c:428:atcmd_submit() submitting command 
`AT+CRC=1'
...
(just the sumitting command log.)

but when I luanch cu at the same time, cu will display some of the echo 
messages. like "returned OK,..."

So it seems by some reason, the com communication path is not smooth or 
redirected.

Sometimes the gsmd does display some echos, when I following such procedures:
1)rm /usr/spool/uucp/LCK..ttySAC0
2)gsmd -p /dev/ttySAC0 -s 115200
3)launch cu (upon the luanching, gsmd will display some echo like "OK")
4)kill cu (in this way, seems gsmd get the return messages back)
But the echo seems not match with the real ATA command sent.



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