diff options
Diffstat (limited to 'examples/host')
| -rw-r--r-- | examples/host/audio_host/README.md | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/examples/host/audio_host/README.md b/examples/host/audio_host/README.md index 5413895a4..27e6425b8 100644 --- a/examples/host/audio_host/README.md +++ b/examples/host/audio_host/README.md @@ -52,8 +52,9 @@ make BOARD=<your_board> all ## Flashing ```bash -# Using CMake -ninja flash +# Using CMake: list the board-specific flash targets, then select one +ninja -t targets +ninja audio_host-jlink # example for a board with J-Link support # Using Make make BOARD=<your_board> flash @@ -111,5 +112,6 @@ Edit `src/tusb_config.h` to modify: ## Notes - While a stream is running, the driver keeps one isochronous transfer in flight and re-submits on completion, so transfers follow the endpoint's `bInterval`. `tuh_audio_capture_cb()` / `tuh_audio_playback_cb()` report each completed transfer; `tuh_audio_err_cb()` reports failures. The example restarts the failed stream automatically 100 ms after the error callback. +- Capture and playback streams in the same Audio Control instance must use the same sample rate. - `tuh_audio_read()` / `tuh_audio_write()` are non-blocking FIFO operations: they return the number of whole frames actually queued/read (0 when the FIFO is empty/full or the stream is not running), and `tuh_audio_read_available()` / `tuh_audio_write_available()` report the FIFO occupancy in frames. `tuh_audio_write()` only queues data; the playback transfer-completion chain sends it, or sends silence when the FIFO does not contain a complete polling interval without consuming the partial data. - Isochronous transfers require the host to poll `tuh_task()` continuously; the capture FIFO absorbs short scheduling gaps and overwrites the oldest frames when full. |