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woodenshark / Lightpack

Lightpack and Prismatik open repository (For support use support@lightpack.tv)
https://lightpack.tv/
GNU General Public License v3.0
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Old lightpack (first rev, with miniUSB only) invalid USB descriptor #77

Closed arcaine2 closed 7 years ago

arcaine2 commented 7 years ago

I have an old variant of Lightpack, bought years ago which was working just fine untill it stopped being detected by OS. After disassembly it looks like the fir rev, with miniUSB only, with 12 LEDs.

dmesg only shows: [1132625.783436] usb 7-1: new full-speed USB device number 5 using uhci_hcd [1132625.818483] usb 7-1: device descriptor read/8, error -61 [1132625.954486] usb 7-1: device descriptor read/8, error -61 [1132626.060136] usb usb7-port1: unable to enumerate USB device

Windows claims the desciptor is invalid and clasifies the devices with VID_0000&PID_0005. I tried entering firmware update mode by pressing the button on the board while plugging the USB but it's still the same.

Any idea what died on it? Could this be AT90USB162 issue and replacing and flashing with new firmware could help?

e-yes commented 7 years ago

I think this is only related to cable OR USB connector - when they're worn - you can face such an issue.

arcaine2 commented 7 years ago

Already tried different cable and different PC, same problem. After disassembly the USB connector looks perfect, not corroded or loose etc. I had the set assembled in place since i bought it, never moved it so this should not be a soldering issue. I already ordered both AT90USB162 and USB6B1 to check.

arcaine2 commented 7 years ago

Problem solved. Replacing AT90USB162 made it detected as DFU device properly. Flashing correct firmware and fixing soldering for couple elements around the MCU to make LEDs working made it fully working again. Guess microcontroller went bad for some reason after all.