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Add the missing preset and shared declarations, remove duplicate initialization, and correct callback call sites so the new example builds through the normal CMake flow.
Signed-off-by: HiFiPHile <[email protected]>
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Provide a high-level audio streaming API over UAC 1.0 devices while
keeping the USB topology private: applications select supported
{format, sample_rate, channels} configurations per logical stream, and
the driver owns the mapping to AS interface, alternate setting, and
endpoint.
- One logical stream per direction per instance; multiple AS interfaces
and alternate settings in a direction are merged into the stream's
configuration list (discrete tuples; continuous ranges exposed as a
single configuration at the top rate)
- Asynchronous tuh_audio_configure(): SET_INTERFACE to the selected
alternate setting, open/reconfigure the endpoint, set the sampling
frequency when supported, initialize the FIFO and packet scheduler,
then invoke the completion callback
- Frame-based FIFO streaming: tuh_audio_read()/tuh_audio_write() queue
whole frames; the driver owns transfer replenishment and fractional
packet scheduling (44.1 kHz pays back the 0.1 frame/ms remainder via
an accumulator for exact average pacing)
- tuh_audio_start()/tuh_audio_stop() activate/deactivate the stream
interface through SET_INTERFACE (alt n / alt 0)
Driver correctness fixes:
- Parse only the AC header's interface collection; MIDI Streaming and
other subclasses are skipped
- Keep every discrete format as a separate configuration; endpoints are
opened only for the alternate setting selected by tuh_audio_configure()
- Check tuh_interface_set() return values and SET_INTERFACE transfer
results instead of ignoring failures
- Validate instance state, direction, buffers, and frame counts in every
transfer API
- Feature Unit requests use the control's real width (mute/AGC/loudness
1 byte, others 2 bytes) and convert multibyte values to host order
- Failed/stalled/aborted isochronous transfers reach only the error
callback, never the capture/playback callbacks
The audio_host example uses the new API: 48 kHz stereo by default,
automatic stream restart on error callbacks, a sine test tone on the
playback stream, and periodic mic-only / spk-only / echo phase switching.
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This commit refactors the TUH_AUDIO (USB Audio Host) class driver to
simplify its public API and improve multi-AS (Audio Streaming) interface
support. The changes are focused on three files: the core driver
(audio_host.c/h) and the example application (audio_app.c).
Key changes in src/class/audio/audio_host.h:
- Remove tuh_audio_descriptor_cb_t and tuh_audio_mount_cb_t structures.
The mount callback no longer passes a large descriptor-info struct;
applications query per-AS info via tuh_audio_as_get_info().
- Add tuh_audio_get_dev_addr() and tuh_audio_get_feature_unit_id()
accessors to retrieve device address and feature-unit ID from an
interface index.
- Simplify control-transfer APIs by replacing (daddr, itf_num, unit_id)
parameters with a single idx parameter:
tuh_audio_set_sampling_freq(idx, as_idx, ...)
tuh_audio_get_sampling_freq(idx, as_idx, ...)
tuh_audio_feature_unit_set(idx, control_selector, channel, ...)
tuh_audio_feature_unit_get(idx, control_selector, channel, ...)
- Add synchronous wrapper APIs using TU_API_SYNC macro:
tuh_audio_get_sampling_freq_sync()
tuh_audio_set_sampling_freq_sync()
tuh_audio_feature_unit_set_sync()
tuh_audio_feature_unit_get_sync()
- Update isochronous endpoint APIs to use (idx, as_idx) instead of
(daddr, idx):
tuh_audio_receive(idx, as_idx, buffer, len)
tuh_audio_send(idx, as_idx, buffer, len)
- Remove tuh_audio_descriptor_cb() weak callback.
- Update tuh_audio_mount_cb() signature from mount_cb(param) to no param.
- Update tuh_audio_rx_cb()/tuh_audio_tx_cb() first parameter from idx to
dev_addr for consistency with other class drivers.
Key changes in src/class/audio/audio_host.c:
- Delete tuh_audio_descriptor_cb weak stub.
- Refactor get_idx_by_ep_addr() to iterate all AS interfaces per device
instead of relying on single ep_in/ep_out fields.
- Add audioh_get_ep_addr_by_dir() helper to find an endpoint address by
direction across multiple AS interfaces.
- Simplify audioh_close() cleanup: remove now-removed single-endpoint
fields (ep_in, ep_out) and rely on tu_memclr(p_audio->as, ...).
- Update audioh_xfer_cb() to pass dev_addr (not idx) to rx/tx callbacks,
matching the new callback signature.
- Simplify audioh_open(): remove descriptor-callback emission and the
temporary desc_cb structure; store only ac_itf_num instead of
bInterfaceNumber + iInterface + as_interface_num.
- Rename local descriptor pointers for clarity:
desc_input_terminal (was desc_it)
desc_output_terminal (was desc_ot)
Key changes in examples/host/audio_host/src/audio_app.c:
- Remove now-unnecessary globals: audio_ep_in, audio_ep_out, audio_ac_itf,
audio_feature_unit_id.
- Initialize audio_dev_addr, audio_idx, audiostream_in_idx,
audiostream_out_idx to 0xFF (TUSB_INDEX_INVALID_8) instead of 0.
- Update print_as_interfaces() to use tuh_audio_as_get_count() and
tuh_audio_as_get_info() instead of accessing mount_cb_data.
- Update all callback signatures and API calls to match the new driver API.
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- Fix missing tu_htole16() conversions for wValue and wIndex in
tuh_audio_set_sampling_freq, tuh_audio_get_sampling_freq,
tuh_audio_feature_unit_set, and tuh_audio_feature_unit_get
- Fix incorrect wIndex parameter order in feature unit requests
(unit_id and itf_num were swapped)
- Replace static freq_buf with per-endpoint ctrl buffer in
tuh_audio_set_sampling_freq to avoid concurrency issues
- Update audio_host README to match actual example behavior
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control transfer buffer
- Stop parsing at first non-Audio interface in audioh_open to avoid claiming unrelated interfaces
- Call usbh_driver_set_config_complete for AS and unknown interfaces to allow enumeration to continue
- Add global ctrl endpoint buffer to audioh_epbuf_t to fix use-after-return in feature_unit_set
- Add sampling_freq NULL check and initialize to 0 in tuh_audio_get_sampling_freq
- Change BOARD_TUH_RHPORT from 1 to 0 in audio_host example
- Add only.txt with supported MCU/family list for audio_host example
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Co-authored-by: Copilot Autofix powered by AI <[email protected]>
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Add TinyUSB Host Audio class driver supporting UAC 1.0 devices.
Features:
- Support multiple Audio Streaming (AS) interfaces with independent format storage
- Support both IN (Microphone) and OUT (Speaker) endpoints
- Per-AS interface format info: channels, sample rate, bit resolution
- Support Feature Unit volume control
- Support sampling frequency get/set
- Add host/audio_host example for STM32F407 discovery board
- Support mono-to-stereo conversion for loopback
Changes:
- Add src/class/audio/audio_host.c and audio_host.h
- Register AUDIO driver in usbh.c
- Add CFG_TUH_AUDIO macro in tusb_option.h
- Add host/audio_host example with CMake and Makefile build support
Tested with Jabra USB headset (stereo speaker + mono microphone) on STM32F407 disco.
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- Order CFG_TUH_DEVICE_MAX before CFG_TUH_HID in the host config snippets
(cdc_msc_hid, hid_controller) so the documented snippet has no forward
macro reference when copied into tusb_config.h.
- Fix stale `examples.rst` references: the generator now writes per-group
`docs/examples/<group>/index.rst` pages, so update the conf.py comment and
the build-doc SKILL.md accordingly.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Documentation tooling:
- Add the `build-doc` skill and `tools/build_doc.py` wrapper for local
Sphinx builds (clean / -W / open).
- Enable Markdown (MyST) in conf.py and auto-collect
examples/{device,host,dual}/*/README.md into a 3-level Examples nav
(Examples > Device/Host/Dual > example), noting each page's source
location and normalizing headings to a single H1.
- Remove the stale `.claude/commands/build-doc.md`; point the AGENTS.md
Documentation section at the skill.
Example docs:
- Add a README.md for every device/host/dual example: what it does, USB
interface table, notable tusb_config.h settings, generic CMake + Make
build steps, and how to try it.
- Fold each *_freertos variant into its base README, noting the FreeRTOS
source path and any RTOS-specific behavior.
Generated docs/examples/ output is git-ignored. Builds clean with
`sphinx-build -W`.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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# Conflicts:
# README.rst
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The variable is set in mount/umount callbacks but not read elsewhere
in the example (rx_cb already receives idx as a parameter). IAR
treats Pe550 as an error under --warnings_are_errors. Tag it
TU_ATTR_UNUSED so the example still shows the pattern of tracking
the device index without erroring on unused-set.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
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Same fix as midi2_device — IAR rejects the unreachable statement
after the while(1) superloop. Let int main fall off the end.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
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- examples/device/midi2_device/src/main.c: drop the unreachable
`return 0;` after the `while(1)` superloop. IAR with
--warnings_are_errors rejects Pe111 (statement is unreachable);
C99 lets `int main` fall off the end, matching midi_test.
- examples/host/msc_file_explorer_freertos/skip.txt: skip
stm32h7s3nucleo. The board has only 64 KB on-chip FLASH and the
FreeRTOS + FatFS host MSC explorer now overflows by ~248 bytes
after the async control queue refactor.
Co-Authored-By: Claude Opus 4.7 <[email protected]>
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task is blocking
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Signed-off-by: HiFiPhile <[email protected]>
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Signed-off-by: HiFiPhile <[email protected]>
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stm32h573i_dk, stm32n657nucleo and stm32n6570dk have the same
pre-existing uninitialized io_ctx.GetTick in their board.h that we
already skip on stm32h7s3nucleo. Trips with Make+LTO; CMake passes.
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Make build was missing midi2_device.c/midi2_host.c from
src/tinyusb.mk. Skip stm32h7s3nucleo board which exposes a
pre-existing uninitialized warning in its board.h (board_init2)
under Make+LTO.
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Restrict midi2_host build to MCUs with USB host support (cloned from
midi_rx) and skip SAMD11 from midi2_device (ROM overflow on link).
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Drop Feather-specific scaffolding (SSD1306 display, font, PIO-USB pin
override) and rename the directory to midi2_host. The example is now a
single main.c + tusb_config.h pair following the midi_rx pattern, with a
printf-only UMP decoder for Channel Voice messages.
Build-tested on adafruit_feather_rp2040_usb_host, daisyseed (stm32h7),
mimxrt1010_evk, stm32f407disco, raspberry_pi_pico2, b_u585i_iot2a,
portenta_c33, stm32h503nucleo, stlinkv3mini, feather_stm32f405.
Ref #3571
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Remove the Waveshare RP2350-USB-A host example and board definition.
The Feather RP2040 USB Host is the TinyUSB reference board for
PIO-USB host and does not require the CFG_TUSB_DEBUG workaround
needed by the Waveshare (R13 pull-up issue).
One host example is sufficient for the PR. The Feather variant has
an improved display with splash, spinner, and 6-line live view.
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The Makefile was missing the FAMILY=rp2040 guard, causing CI failures
on stm32h7rs and other non-RP2040 targets. Matches the approach used
by midi2_host.
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Board-specific variant of midi2_host targeting the Adafruit Feather
RP2040 with USB Type A Host (product 5723).
Hardware differences from the Waveshare RP2350-USB-A example:
- PIO-USB on GP16/GP17 (vs GP12/GP13)
- I2C1 via STEMMA QT on GP2/GP3 (vs I2C0 GP4/GP5)
- USB Host 5V power enable on GP18
Display uses three phases: splash screen, spinner while waiting for
a device, then live scrolling UMP message view with 6 visible lines.
Tested board-to-board: RP2040 Pico (Device) to Feather RP2040 (Host),
SSD1306 128x64 OLED showing decoded MIDI 2.0 messages in real time.
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- Use UINT32_C(1) instead of 1u for bit shifts >= 16 in
midi2_device.c to avoid shift-count-overflow on 16-bit
platforms (MSP430)
- Add Makefiles for midi2_device and midi2_host examples with
family guard (skip if FAMILY != rp2040). These examples
require Pico SDK and board-specific hardware
- Restrict midi2_device CMakeLists.txt to rp2040 family
(matching midi2_host)
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Host driver (midi2_host.c):
- midih2_open() now returns actual parsed length instead of max_len,
preventing composite device interface conflicts
- Parsers (alt0/alt1) refactored to return const uint8_t* end pointer
following midi_host.c switch/case pattern
- Alt 1 CS Endpoint now parses MIDI 2.0 layout (bNumGrpTrmBlk at
offset 3 with MIDI_CS_ENDPOINT_GENERAL_2_0 subtype check) instead
of reusing MIDI 1.0 struct (bNumEmbMIDIJack)
- midih2_set_config() now issues SET_INTERFACE control request via
tuh_interface_set() before completing configuration. Falls back to
alt 0 if SET_INTERFACE fails
- Extracted midih2_set_config_complete() and midih2_set_interface_cb()
for async SET_INTERFACE handling
Device driver (midi2_device.c):
- midi2d_open() skip loop now checks bInterfaceNumber, stopping at
interfaces that belong to other functions in composite devices
- SET_INTERFACE handler now rejects alt > 1 (returns false/stall)
- Named constants for GTB descriptor types and MIDI protocol values
Descriptor macros (usbd.h):
- TUD_MIDI2_DESC_ALT1_HEAD: iInterface set to 0 (consistent with
Alt 0), wTotalLength now uses TUD_MIDI2_DESC_ALT1_CS_LEN to cover
all Alt 1 class-specific descriptors
- TUD_MIDI2_DESC_ALT1_EP: now accepts GTB ID list via variadic args,
emitting complete CS endpoint descriptor
Host example:
- CMakeLists.txt restricted to rp2040 family (display.c requires
Pico SDK headers)
- display.c: null terminator after strncpy in log scroll
Documentation:
- class_drivers.rst updated to reflect SET_INTERFACE behavior and
auto-select with fallback
Addresses: Codex P1 (#1, #2, #3), Copilot (#4-#9)
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Add Host example that receives UMP from a MIDI 2.0 Device via PIO-USB
and displays received messages on a SSD1306 OLED (I2C, 128x64).
Features:
- Boot checklist on display (PWR, TinyUSB, USB bus, Device, Descriptor,
Alt Setting UMP, Mount, Receiving)
- Decode and display all MIDI 2.0 Channel Voice messages
- PIO-USB Host on rhport 1 (GP12/GP13 for Waveshare RP2350-USB-A)
- SSD1306 display via I2C0 (GP4=SDA, GP5=SCL)
Also add board definition for Waveshare RP2350-USB-A.
Tested: Waveshare RP2350-USB-A (Host) receiving UMP from Raspberry Pi
Pico (Device) via USB cable, notes displayed on SSD1306 OLED
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Signed-off-by: HiFiPHile <[email protected]>
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Co-authored-by: Copilot Autofix powered by AI <[email protected]>
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Co-authored-by: Copilot <[email protected]>
Signed-off-by: HiFiPhile <[email protected]>
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WARN_FLAGS to tinyusb sources and examples sources only (skip 3rd party library and mcu vendor)
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IAR is only supported with CMake. Remove all IAR-specific references
from the Make build system including toolchain files, SRC_S_IAR,
LD_FILE_IAR variables, and IAR toolchain detection.
Also fix GET_SECTOR_COUNT truncation in msc_file_explorer and
broken formatting in stm32f7 board_uart_write.
Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>
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Update FatFS to R0.16
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- Add lib/fatfs to deps_mandatory in get_deps.py, pinned to R0.16
(commit 30ca13c6) from github.com/abbrev/fatfs mirror
- Move TinyUSB custom ffconf.h to examples/host/msc_file_explorer/src/
with project-specific settings: FF_CODE_PAGE=437, FF_USE_LFN=1,
FF_FS_RPATH=2, FF_VOLUMES=4, FF_FS_NORTC=1
- get_deps.py removes stock ffconf.h after clone to avoid conflict
- Remove vendored fatfs source files from git tracking
FatFS R0.16 includes important fixes since R0.15:
- Fixed FAT32 FsInfo regression (forced full FAT scan on f_getfree)
- Fixed f_readdir infinite loop (from R0.15b)
- f_getcwd/.. now works on exFAT
- Added FF_FS_CRTIME support
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to prevent xfer is ack while stopping.
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adjust CLI configuration and HIL tests
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Signed-off-by: HiFiPhile <[email protected]>
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Signed-off-by: HiFiPhile <[email protected]>
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