tinyusb.git/src/class/midi/midi2_device.c, branch 0.21.0

midi2: convert to raw Tx FIFO for better segmentation handling, add count to packet api

2026-05-18T21:07:49Z

Signed-off-by: HiFiPhile

midi2: boundary-aware drain in xfer_cb to keep UMP packets intact

2026-05-18T14:42:34Z

midi2: per-interface weak callbacks for UMP Stream config

2026-05-17T15:19:45Z

Lets each instance return different NUM_GROUPS, NUM_FUNCTION_BLOCKS, EP_NAME and PRODUCT_ID. Defaults fall back to the macros.

midi2: peek 4 bytes for MT, restore 256 buffers

2026-05-17T14:31:12Z

MT is in byte 3 of the UMP word in LE memory, not byte 0. Buffers at mps blocked RX xfer re-arm on partial packets.

midi2: use hwfifo if supported

2026-05-17T12:35:34Z

Signed-off-by: HiFiPhile

midi2: prevent UMP packet split across USB transfers

2026-05-16T15:59:44Z

The edpt_stream auto-flush is byte-oriented and could cut an UMP message in half when the FIFO reached wMaxPacketSize, corrupting the peer's RX context. Pre-flush whole packets before writing one that would cross the boundary on both device (tud_midi2_n_ump_write) and host (tuh_midi2_ump_write) paths. Host write also becomes packet-aware instead of word-by-word. Ref #3571

midi2: reject UMP read/write API on alt setting 0

2026-05-16T15:59:03Z

Alt 0 carries USB-MIDI 1.0 32-bit Event Packets, not UMP words; calling the UMP API there would misinterpret the stream. Expose MIDI_PROTOCOL_MIDI1 and MIDI_PROTOCOL_MIDI2 in the public header so applications can branch on the negotiated protocol. Ref #3571

midi2: align descriptors with USB-MIDI 2.0 spec

2026-05-12T14:07:45Z

Brings the MIDI 2.0 device driver into full conformance with USB Device Class Definition for MIDI Devices v2.0 (USB-IF, May 2020). - Alt 1 MS Interface Header wTotalLength now reports 0x0007 per Table 5-2 ("set to match bLength"), replacing the prior 0x0011 carried over from USB-MIDI 1.0 conventions. - GET_DESCRIPTOR class request now validates bmRequestType direction, type and recipient plus wIndex and wValue high byte per Section 6. - iBlockItem in the default Group Terminal Block is driven by CFG_TUD_MIDI2_BLOCK_STRIDX so applications can attach a UI string descriptor to the block per Table 5-6. - UMP word byte order assumption (little-endian host per Section 3.2.2) is documented inline so future big-endian ports know where to wrap access with tu_htole32 / tu_le32toh. Validated on RP2040 and ESP32-P4 under Linux kernel 6.17: lsusb -v reports wTotalLength = 0x0007 on Alt 1 MS Header (raw bytes 07 24 01 00 02 07 00). amidi -l enumerates Group Terminals exposed via the class-specific GET_DESCRIPTOR response.

midi2: align ep_buf allocation with other stream-based classes

2026-05-12T14:07:45Z

Keep the MIDI 2.0 drivers fully self-contained, with no changes to shared or generic stack code. Allocate the per-endpoint buffer in both midi2_host and midi2_device, following the convention used by cdc, midi, vendor, and printer. The class buffer struct is declared unconditionally and passed to tu_edpt_stream_init on every init, so the streaming helpers operate on the same shape across all classes.

fix: CI build failures on non-RP2040 platforms

2026-05-12T14:07:44Z

- 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)