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Bring the audio work onto the current host core and build files before applying the remaining review fixes.
Signed-off-by: HiFiPHile <[email protected]>
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Look up the playback Feature Unit in the host example and set its master volume after configuration. The output also reports when a stream has no controllable Feature Unit.
Signed-off-by: HiFiPHile <[email protected]>
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Record terminal and Feature Unit links while parsing the AudioControl block, then resolve the stream association after all entities are known. Common capture and playback descriptor orders are both supported.
Signed-off-by: HiFiPHile <[email protected]>
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Collect only format descriptors with discrete sampling frequencies. The configuration API exposes concrete tuples and cannot safely represent a continuous range as one selectable rate.
Signed-off-by: HiFiPHile <[email protected]>
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Convert full-speed bInterval values to the scheduler microframe timebase and size transfers for the complete service interval. Endpoints with bInterval greater than one no longer run at a one-frame cadence.
Signed-off-by: HiFiPHile <[email protected]>
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Select capture and playback configurations independently in the example. Speaker-only devices can now start playback without a capture configuration.
Signed-off-by: HiFiPHile <[email protected]>
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Associate one directly connected Feature Unit with each capture and playback stream. This lets applications control microphone and speaker paths independently.
Signed-off-by: HiFiPHile <[email protected]>
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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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Complete the khci -> chipidea ci_fs migration that was started for device
(commit d70403f1f "host is not yet"):
- device: switch kinetis_k/kl/k32l (Makefiles + k32l CMake) to dcd_ci_fs.c
- host: add hcd_ci_fs.c (port of hcd_khci.c onto ci_fs_regs_t) and switch all
Kinetis families to it; remove src/portable/nxp/khci entirely
- enable host examples (device_info, cdc_msc_hid) for mcu:KINETIS_K
- README: merge the KL and K32L2 rows into a single "KL, K32L" ci_fs row
hcd_ci_fs.c also fixes two pre-existing host bugs found via HIL on frdm_k64f
(present in the old hcd_khci.c too):
- data toggle was flipped on a NAK in suspend_transfer; a NAK transfers no
data so the toggle must be preserved, else the retried bulk packet is
silently discarded by the device (MSC CBW/CSW hang). See comment in file.
- prepare_packets asserted and dropped a transfer when the single shared BDT
was still owned by an in-flight transfer under concurrent activity; now it
returns busy and resume_transfer defers/retries on the next SOF.
HIL verified on frdm_k64f: device 13/13, host cdc_msc_hid (CDC mount + echo +
MSC mount, through a hub).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01ExGPLP5eU43LR7o6yYLpNi
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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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