CH32V307 Audio was corrupted after move ISO transfers into xfer_isr

[fangxx3863]

Operating System

Windows 11

Commit SHA

from eed294f to master

Board

ch32v307v_r1_1v0

Firmware

Test code examples/device/audio_test

Caused commit eed294f

What happened ?

The audio was intermittently set to near 0.

This wasn't just limited to the mic test; the same applied to the speaker.

This issue persists even on the current master branch.

checkout to 76a6834 and get correct result

I'm also tested the same code on an STM32F103C8, and it worked fine.

How to reproduce ?

1. Use ch32v307v_r1_1v0 board
2. Download examples/device/audio_test
3. Run python plot_audio_samples.py
4. Get the error result

Debug Log as txt file (LOG/CFG_TUSB_DEBUG=2)

If you add LOG=2 to the make command line, the program may not even be able to run the test Python script after downloading.

Screenshots

Output file of running the test script Output.csv

I have checked existing issues, discussion and documentation

• I confirm I have checked existing issues, discussion and documentation.

[HiFiPhile]

I'm not familiar with ch32, if you can find the issue please let me know.