Your library ramdomly freezes at reading.

[bgracso]

Your library has been a real solution for our trouble, but it freezes randomly, your event USBHostSerial::_handle_rx stops executing at any time. Because of this the Available() method always returns 0. I guess it is the same issue described in espressif/esp-idf#14996
Have you seen this before? Any ideas on how to fix it?
Thanks in advance.

Esp32-S3 N16R8.
Arduino 2.3.3.
Windows 10.

[bertmelis]

I haven't seen this before and also no idea on how to fix. In the _handle_rx code is no blocking code. Even in the case the buffer would overflow, it just discards the extra data.

Could be related to the mentioned issue. If this callback in ran in an ISR, I should alter the call. It might also be solved by setting the wait time to zero: xRingbufferSend(static_cast<USBHostSerial*>(arg)->_rx_buf_handle, &data[lenReceived], 1, 0)

[bgracso]

Hmm... thanks for your reply. I changed the xRingBuffer to a StreamBuffer because I thought that was the problem, until I found the problem already posted. I have two ESP32-S3s, one running as a USB device and the other as a USB host. Your library is implemented on the latter, and it starts receiving and sending data... After 20'000, 70'000, or even 120'000 packets exchanged, the USB host stops receiving data. After running several tests, I realized that the number of packets sent wasn't the problem, but rather the random timing at which it stops working, I don't know what to do now. If Espressif decides to fix this bug, could you regenerate your library?

[bertmelis]

Of course! I'm actively using this library myself. But the issue might be in the underlying libraries and there I'm not in control.

I'm following the referenced issue.