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Sansa Clip+ with Rockbox 3.11.2 Freeze on USB

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Lizardking1:
I don't quite understand what's up, but it seems to be ok now. It was weird on my Win7 laptop, the music didn't appear through MediaMonkey, today it did. On my XP machine it also works. My only concern now is that the battery holds less charge from all the plugging and unplugging.

saratoga:

--- Quote from: Lizardking1 on November 20, 2012, 08:07:06 PM ---I don't quite understand what's up, but it seems to be ok now. It was weird on my Win7 laptop, the music didn't appear through MediaMonkey, today it did.

--- End quote ---

The current USB driver is buggy, and works better on some devices then others.

batman52:
I think I have fallen into the same issue with my clip v2. I comment in case some clever developer can get from this some useful hints.

I wanted to use my player attached to the aux input of my car stereo in "car adapter mode", therefore I have enabled the car adapter function, and the resume playing feature at the same time. The idea was to attach a cigarette lighter power supply to the player, which would have woken up the player when turning on the car (apparently the hardest feature to find on whatever other player...), and then thank to the car adapter mode gently shut down when the car was turned off.

What happens instead is that when I turn on the car, the device sticks with the rockbox splash screen showing a message "loading firmware not found", then after a few seconds goes automatically to the "bootloader USB mode", then when removing power a thrilling panic message appears.

*PANIC*
Unhandeld masked IRQ 03: INT_USB (status0x00000008)

then pressing play resumes playing normally.

The strange bit is that there seems to be some kind of timeout, meaning if you turn off the player and re-attach it in a short delay (I'd say less than 2 mins), the thing does not happen, and it just resumes playing normally.

My feeling is that due to the unstable power supply when attaching the player, the bootloader may detect a false keypress of the "upload firmware mode" (power+left if I remember well). If that assumption is true, a solution could be to add some delay time (0.5 sec?) before doing the check for the keypress in the bootloader - but this is just a guess, and there's obviously people more skilled than me out there who have done this wonderful job of porting rockbox even on my really cheap music player - thank you all for this (still hope someone can work on this bug)!

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