tinyusb.git/examples/host, branch rework-metrics

examples: align device-info descriptor handling

2026-09-05T15:32:47Z

examples: write the host cdc console over RTT when that is the console

2026-09-05T08:25:15Z

console_write() forwards what the attached CDC device sent back to the board's console, and reached for board_uart_write() directly to stay non-blocking. On a board whose console is the debug probe there is no UART: board_uart_write() is a stub returning -1, so everything the device echoed was dropped, and the do/while loop retried a write that could never make progress and spun until more data arrived. Send it through SEGGER_RTT_Write() on LOGGER_RTT builds -- already non-blocking in the default NO_BLOCK_SKIP mode, which is what the UART path wanted board_uart_write() for. The retry is also bounded now. board_uart_write() is only documented to return the number of bytes sent, and the stubs disagree on how they say "no console here" -- lpc40 returns -1, apm32f0xx returns 0 -- so the loop cannot decide from the return value alone when to stop. It gives up after 10 ms without progress instead, which no draining console ever hits, and keeps the negative return as a fast path so a stub UART does not cost that wait on every read. The RTT header include lives in board_api.h so any example can reach it; the include path only exists when LOGGER=rtt defines LOGGER_RTT. host/cdc_msc_hid now passes on ea4088_quickstart, whose probe (LPC-Link2) has no VCOM: the CDC echo round-trips through a CH340 with TX-RX shorted.

improve example details

2026-09-03T02:46:14Z

Signed-off-by: HiFiPHile

implement per channel volume control

2026-09-02T13:24:36Z

Signed-off-by: HiFiPHile

Improve audio host stream event reporting

2026-08-27T13:28:07Z

Report asynchronous start and stop completion with transfer results. Replace the ambiguous stream error callback and byte count with explicit transfer-failure events, and ignore stale completions after stopping.

audio: service example FIFOs at watermarks

2026-08-27T08:36:52Z

Move capture and playback FIFO servicing into the main-loop task at half-full and half-drained watermarks. Use transfer callbacks only for diagnostics, share one conversion buffer, and demonstrate that application reads and writes need not be synchronized to USB callbacks. Signed-off-by: HiFiPHile

audio: expose generic Audio Control requests

2026-08-27T08:34:34Z

Remove the narrow public Feature Unit request API while retaining managed mute and volume helpers. Expose validated Audio Control descriptors during enumeration and provide raw asynchronous and synchronous entity requests for advanced controls. Signed-off-by: HiFiPHile

audio: allow stopped duplex streams to change rate

2026-08-27T08:34:33Z

Enforce a shared capture/playback sample rate only while the opposite stream is running. This lets both stopped streams be configured in either order while preventing a live shared clock from changing underneath a transfer. Signed-off-by: HiFiPHile

audio: add UAC2 host streaming support

2026-08-27T08:34:33Z

Add protocol-selectable UAC1/UAC2 parsing, UAC2 terminal and Feature Unit topology, Clock Source discovery, sampling-frequency ranges, and protocol-specific stream controls. Cover UAC2 playback, capture, control discovery, and malformed descriptors with unit tests. Signed-off-by: HiFiPHile

implement explicit feeback support

2026-08-26T07:16:49Z

Signed-off-by: HiFiPHile