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Linux - Embedded & Single-board computer This forum is for the discussion of Linux on both embedded devices and single-board computers (such as the Raspberry Pi, BeagleBoard and PandaBoard). Discussions involving Arduino, plug computers and other micro-controller like devices are also welcome.

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Old 04-17-2012, 07:43 PM   #1
lmorda
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Registered: Nov 2011
Location: San Diego
Distribution: Fedora
Posts: 11

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USB peripheral device not found on USB OTG port with Linux 3.0.0 kernel


I am having problems with a USB OTG port on my embedded system. I have a Gumstix Overo Air embedded computer running on a Stagecoach expansion board. The Overo runs an embedded distribution called Angstrom which uses Linux kernel 3.0.0. I am trying to connect a USB peripheral device. This device is a General Dynamics radio. The radio is usually connected to a Windows or Linux desktop with a USB standard A 2.0 cable. A Belcarra CDC ethernet driver is used to connect to the radio over tcp/ip.

The connection to the Overo computer USB OTG port is unreliable. Sometimes the connection is found, and sometimes it is not. I cannot seem to repeat the issue. It's very important for my system to always find the radio when it is plugged into the USB OTG port. I looked at '/var/log/messages' and also the output from 'lsusb -v' Basically, both just output information about the radio when it is found, and don't output anything about the radio or that USB port when the radio is not found.

How can I debug this problem? I've tried the Gumstix mailing list but have not gotten any help. I'm hoping this is a Linux issue and I can get some help on here!! :-/ I'm sorry in advance if this forum does not cover embedded questions.

Any help is very very much appreciated. Thanks.
 
Old 04-28-2012, 11:56 AM   #2
will.larson
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Registered: Feb 2012
Posts: 10

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Have you tried earlier or later kernel releases? Are you compiling your own kernel?

Are you using a board config files. How is the radio device being powered.
 
  


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