Teensy 2.0 serial interface problem

by rweber95 on Fri Feb 01, 2013 4:44 am

I have a teensy 2.0 connected to a stepper motor shield and motor. While debuging some software I got a driver update notice which I clicked to install. Now, when I connect the Teensy to my laptop or my desktop computer, the Device Manager shows it as Portable Device, E:\ instead of an entry in PORTS and COM, and I get an AutoPlay window for Removable Disk (E:). When I click the 'Open folder to view files' button it lists a Readme.txt file. The contents of that readme are:

"This USB disk was automatically formatted when you compiled your sketch.

You can place files to be copied onto this disk, instead of this Readme
file, in a "disk" subdirectory inside your sketch. That location
would be:

C:\Users\Weber\Documents\Arduino\IRteensey\disk

For a blank disk, just create that directory but don't put any files
into it. To name your disk, create a file ".VolumeLabel" with the name."

Apparently the driver I allowed to download has overwritten the USB/Serial software in the Teensy. What program is loaded in the Teensy's ATmega32U4 that provides the serial interface to the USB? HalfKay? Can I install it? What do I need to do it?

Bob Weber
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Re: Teensy 2.0 serial interface problem

by adafruit_support_bill on Fri Feb 01, 2013 6:58 am

Wow! Never heard of anything like that. Nevertheless, it sounds like it should be reversible. If you contact PJRC, they should be able to provide information on how to re-flash the firmware on the Teensy. (And maybe offer some insight about how it happened in the first place)
http://www.pjrc.com/about/contact.html
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Re: Teensy 2.0 serial interface problem

by rweber95 on Sat Feb 02, 2013 3:07 am

I finally got a reply from Paul to try the recovery procedures in http://www.pjrc.com/teensy/troubleshoot.html.
Worked. I can now program my Teensy.

Bob
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Re: Teensy 2.0 serial interface problem

by adafruit_support_bill on Sat Feb 02, 2013 7:13 am

That's good to hear. Thanks for the follow-up!
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