tinyusb.git/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c, branch master

dcd(fsdev): don't disarm an armed endpoint on clear-halt toggle reset

2026-07-09T16:38:35Z

Co-Authored-By: Claude Fable 5 Claude-Session: https://claude.ai/code/session_01HeF2gZ1M7GWkz6Av4BpKPg

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.

dcd/stm32_fsdev: restore CH32 EP0 CONTROL type when stalling

2026-06-18T08:56:23Z

The CH32 workaround only restored EP0 to CONTROL in edpt_xfer(). When the stack rejects a control write with data (handle_ctr_setup having already switched EP0 to BULK) it stalls EP0 via dcd_edpt_stall() without ever calling dcd_edpt_xfer(), leaving EP0 typed BULK+STALL. As SETUP recognition is tied to CONTROL-typed endpoints, the host's recovery SETUP (which should auto-clear the stall) would be ignored, wedging EP0 until a bus reset. Restore CONTROL for EP0 in the same exclusive write that sets the STALL status. DFU download-in-wrong-state is a concrete trigger. Co-Authored-By: Claude Fable 5

dcd/stm32_fsdev: restore CH32 EP0 CONTROL type atomically with arming

2026-06-18T08:56:23Z

edpt_xfer() restored EP0 to CONTROL at the top of the function, before the OUT stage was armed (rx bufsize + STAT_RX=VALID written further down, with interrupts enabled in between). That re-enabled the CH32 blind OUT ACK while STAT_RX was still NAK and the buffer size stale, so a host-retried DATA OUT / status ZLP could be ACKed into the wrong buffer in the gap. Fold the CONTROL restore into the single exclusive write that programs STAT_RX=VALID for the OUT direction, after the buffer size is set, so type and arming go live together. The IN direction keeps the (now atomic) early restore, where no pending OUT exists to be blind-ACKed. Co-Authored-By: Claude Fable 5

dcd/stm32_fsdev: tidy CH32 EP0 setup parsing and whitespace

2026-06-18T08:35:55Z

Parse the setup packet via tusb_control_request_t instead of hand-rolled byte indexing; drop a stray blank line and fix indentation. No functional change. Co-Authored-By: Claude Fable 5

dcd/stm32_fsdev: make CH32 ep0_set_type read-modify-write atomic

2026-06-18T08:35:55Z

ep0_set_type() read the EP0 register outside any critical section and only ep_write() masked the USB IRQ around the store. A USB interrupt landing between the read and the write (e.g. a new SETUP whose handler installs the BULK gate) was silently undone when the task resumed and wrote back its pre-interrupt snapshot with the type forced to CONTROL, re-exposing the unsolicited EP0 OUT ACK the workaround blocks. Bracket the whole read-modify-write with fsdev_int_disable/enable when called with need_exclusive (task context). ISR-context callers pass false and are unaffected (the ISR cannot preempt itself). Co-Authored-By: Claude Fable 5

Merge branch 'master' into ch32_fsdev

2026-06-12T16:59:13Z

optimize interrupt handling time

2026-05-25T20:28:39Z

Signed-off-by: HiFiPhile

dcd/stm32_fsdev: workaround CH32 EP0 premature OUT ACK

2026-05-24T14:02:39Z

Track EP0 control transfer state from SETUP (direction and wLength) and gate CH32 EP0 handshakes accordingly. Switch EP0 type away from control to bulk to block unsolicited OUT ACKs during control read/write gaps, then restore control type when EP0 transfer is explicitly armed. Signed-off-by: HiFiPhile

add stm32c5 support

2026-05-10T12:17:00Z

Signed-off-by: HiFiPHile