USB Issues With Beagleboard C4 Connected To Zippy Rev-A

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1

I soldered the expansion header to my Beagleboard Rev C4 and plugged it in to my brand new Zippy board Rev A. Everything went well until I logged in to ttyS1 as an ordinary user. Then
I began getting the USB error messages that are shown on line 396 of this pastebin:

http://pastebin.com/m15957167

I have not gotten these types of errors in the few times I've booted the Beagle without the Zippy board. I wonder if I damaged either the Beagle or the Zippy, or both? Or perhaps it is a badly soldered joint or two on the expansion header?

The Zippy's wired ethernet was connected and it was able to get an IP address. As root, I could ping the DNS server.

Any suggestions as to why I am getting the USB errors?

Thanks

Bob Cochran

2

I forgot to add that I have not installed any jumpers on the Zippy board, or on the Beagle. Do I need to jumper either or both?

Bob

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Robert,

based on your logs, i suspect you are powering the beagle+zippy via the usb port which is not going to provide you enough power. please try using a +5V DC with a minimum of 700mA current rating.

dave

4

Hi Dave,

Actually, I'm powering the Beagle with a 5v, 2.5A wall wart. However I just discovered heat shrink tubing on the 5v power cable from the adapter to the plug that connects to the Beagle Board, and I am wondering if the seller did a repair on the adapter before mailing it to me. It seems unusual to see heat shrink on an adapter cable. I will use a different adapter that has worked fine in the past and see what happens. Thanks a lot for the suggestion. You are the second person to wonder if I'm using USB power, so perhaps this is a faulty wall wart issue?

Thanks

Bob

5

As a followup to this, I used a different wall wart rated 5v, 2.0A on the Beagle and all is well -- the USB error messages stopped completely. So I guess the 5v, 2.5A unit is defective in some way. I ought to buy test leads which can connect to my multimeter and are small enough to test the wart's output at the connector end.

Rusty from TinCanTools.com told me how to set the date on the Beagle, but since it is defaulting to UTC and I want localtime, I learned how to update the opkg list of available packages and then install the tzdata package, and finally symlink my timezone to /etc/timezone. So I'm feeling pretty good about these basic skills. I learned a big lesson about wall warts and still have a working Beagle and a working Zippy. Miracles do happen.

Bob Cochran