Garbage feedback value causes Android to refuse playing

dragonman225 / stm32f469-usbaudio

Enable 24-bit / 96kHz Hi-Fi PCM stereo audio output via USB Audio Class 1.0 asynchronous mode on STM32469I-Discovery · Volume and mute control implemented

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Garbage feedback value causes Android to refuse playing #1

Closed dragonman225 closed 5 years ago

dragonman225 commented 5 years ago

Inspect with Wireshark, sometimes there're ISO IN packets with 1 byte data, and Wireshark marks them with "illegal byte sequence".
Android stop playing once it gets a garbage packet.

dragonman225 commented 5 years ago

Also on an Intel IvyBridge laptop running Linux 4.19.69, the USB audio device keeps disconnecting and re-connecting. dmesg shows the following :

usb usb2-port1: disabled by hub (EMI?), re-enabling...

dragonman225 commented 5 years ago

Resolved in commit eb2aa7d737363f3bdf7e1c25f47479547077a448