SDK 2.1.0 tinyusb panics on composite usb audio and cdc acm device

[not1337]

The tinyusb version pulled by SDK 2.1.0 is missing a fix causing panic when using a composite usb device (audio and cdc/acm). The problem seems to be well known and fixed in current versions of tinyusb. See: hathach/tinyusb#1802
A future SDK release needs an updated version of tinyusb.

As a temporary fix for everyone affected, replace the dcd_rp2040.c of the pulled tinyusb library with:

https://raw.githubusercontent.com/howard0su/tinyusb/cd7ee9639ee5ceddcdaecde5842c2ce97a56ce63/src/portable/raspberrypi/rp2040/dcd_rp2040.c

The above fixes the problem for me and the link is included for convenience to reduce search time for everyone affected.

[kilograham]

Note that we don't want that particular fix, but we want the change that is being made in TinyUSB upstream (which may or may not be this one hathach/tinyusb#2937 )

[kilograham]

OP: is this a regression from earlier SDK, or was that also broken due to TinyUSB/rp2040 issues?

[not1337]

Sorry, don't know. SDK 2.1.0 is the first version I'm using and I never used rp2040, only rp2350.

[Slion]

Is this bug specific to rp2040 or does it affect rp2350 too?

[not1337]

In my case rp2350a, I don't have any rp2040.

[liamfraser]

@not1337 this should be fixed in the latest version of the SDK (2.1.1) as we now run TinyUSB 0.18.0, which contains this fix here hathach/tinyusb#2847 - can you confirm this works?