Openmoko Bug #1435: modem/kernel truncates packages in mux mode after hours of operation

[Openmoko Public Trac]

#1435: modem/kernel truncates packages in mux mode after hours of operation
---------------------------+------------------------------------------------
 Reporter:  mdt at emdete.de  |        Owner:  openmoko-kernel
     Type:  defect         |       Status:  assigned       
 Priority:  high           |    Milestone:                 
Component:  hardware       |      Version:  GTA02v4        
 Severity:  normal         |   Resolution:                 
 Keywords:                 |     Blocking:                 
Blockedby:                 |  
---------------------------+------------------------------------------------
Changes (by roh):

  * owner:  sean_chiang => openmoko-kernel
  * status:  new => assigned
  * component:  GSM Modem => hardware


Old description:

> i receive the following packages from the modem in mux mode:
>
> 00000000: 7e 05 ef 0d 0a 2b 43 50-42 53 3a 20 28 22 45 4e  ~.ï..+CPBS:
> ("EN
> 00000010: 22 2c 22 42 44 22 2c 22-46 44 22 2c 22 44 43 22
> ","BD","FD","DC"
> 00000020: 2c 22 4c 44 22 2c 22 52- .  .  .  .  .  .  .  .  ,"LD","R
>
> 00000000: 7e 05 ef 0d 0a 2b 43 47-4d 49 3a 20 46 49 43 2f  ~.ï..+CGMI:
> FIC/
> 00000010: 4f 70 65 6e 4d 6f 6b 6f-0d 0a df 7e 7e 05 ef 0d
> OpenMoko..ß~~.ï.
> 00000020: 0a 4f 4b 0d 0a df 7e  .- .  .  .  .  .  .  .  .  .OK..ß~
>
> as you can see, the first block does not end with an 0x7e which is the
> package
> end byte. the second block is again a complete package with 0x7e at the
> beginning and the end.
>
> this behavior starts after hours of operation and increases.

New description:

 i receive the following packages from the modem in mux mode:

 00000000: 7e 05 ef 0d 0a 2b 43 50-42 53 3a 20 28 22 45 4e  ~.ï..+CPBS:
 ("EN
 00000010: 22 2c 22 42 44 22 2c 22-46 44 22 2c 22 44 43 22
 ","BD","FD","DC"
 00000020: 2c 22 4c 44 22 2c 22 52- .  .  .  .  .  .  .  .  ,"LD","R

 00000000: 7e 05 ef 0d 0a 2b 43 47-4d 49 3a 20 46 49 43 2f  ~.ï..+CGMI:
 FIC/
 00000010: 4f 70 65 6e 4d 6f 6b 6f-0d 0a df 7e 7e 05 ef 0d
 OpenMoko..ß~~.ï.
 00000020: 0a 4f 4b 0d 0a df 7e  .- .  .  .  .  .  .  .  .  .OK..ß~

 as you can see, the first block does not end with an 0x7e which is the
 package
 end byte. the second block is again a complete package with 0x7e at the
 beginning and the end.

 this behavior starts after hours of operation and increases.

--

Comment:

 sounds like a calypso fw bug.

 do you have any specifics about how to provoke this?

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/1435#comment:2>
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