tinyusb.git/src/class/usbtmc/usbtmc_device.h, branch claude/usbh-enum-timeout

usbtmc: re-arm (or stall) the bulk-OUT endpoint after a USB488 TRIGGER

2026-08-14T07:00:06Z

A single USB488 TRIGGER message left the bulk-OUT endpoint un-armed, so the host's next bulk-OUT transfer timed out. The trigger itself succeeded silently, so the failure surfaced on a later, unrelated command; only a USBTMC device clear recovered it. The bundled examples/device/usbtmc reproduced this as shipped. Every other branch of the STATE_IDLE dispatch in usbtmcd_xfer_cb() leaves the endpoint in a defined state: it either transitions out of STATE_IDLE so a later tud_usbtmc_start_bus_read() can re-arm it, or it stalls and lets the CLEAR_FEATURE(ENDPOINT_HALT) handler recover it. USBTMC_MSGID_USB488_TRIGGER did neither, and because the state stayed STATE_IDLE, even an application following the contract documented in usbtmc_device.h got a silent no-op from tud_usbtmc_start_bus_read(). Transition to STATE_NAK so the re-arm can take effect, and stall the endpoint when trigger is unsupported or the application callback rejects it, matching the existing handling for messages the driver cannot process. The callback result is deliberately not wrapped in TU_VERIFY(), which would return before the stall/re-arm and reintroduce the same hang. Since the driver now re-arms after a trigger, drop tud_usbtmc_msg_trigger_cb from the list of callbacks after which the application must do so. Fixes #3821 Co-Authored-By: Claude Opus 5

license: use SPDX identifiers for src/ headers (#3749)

2026-07-02T14:55:45Z

* license: use SPDX identifiers for src/ headers Replace the full ~20-line MIT license boilerplate on every src/ file with a two-line SPDX tag (SPDX-FileCopyrightText + SPDX-License-Identifier), following the REUSE convention used by CircuitPython and the Linux kernel. Removes ~3500 lines of duplicated boilerplate.

Potential fix for code scanning alert no. 914: Commented-out code

2025-09-17T22:16:27Z

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Update weak callbacks to new syntax

2025-09-17T20:48:59Z

Signed-off-by: HiFiPhile

Merge pull request #2494 from tommie/usbtmcnotif

2024-04-28T10:36:41Z

Add notification support for device class USBTMC

Buffer int msg to ensure alignment and placement correctness.

2024-04-27T15:12:00Z

add class driver deinit

2024-04-08T15:07:56Z

add notification support for device class USBTMC.

2024-02-26T10:43:45Z

The ep_int_in is already used for responding to USB488 READ_STATUS_BYTE requests, but that EP is defined for all of USBTMC. This extends the functionality to let callers send notifications and receive ACKs.

Fix typos

2022-12-04T12:43:23Z

Update USBTMC driver to support dynamic packet sizes (based on descriptor).

2022-06-22T01:27:52Z