From bc8ce76ae800b312b4d3ef591cc42e8726e68d7f Mon Sep 17 00:00:00 2001 From: Saulo Veríssimo Date: Tue, 24 Mar 2026 23:37:48 -0300 Subject: feat: add MIDI 2.0 Device class driver (USB-MIDI 2.0) Add native USB-MIDI 2.0 Device class driver to TinyUSB. Implements the USB-MIDI 2.0 specification with both Alt Setting 0 (MIDI 1.0 fallback) and Alt Setting 1 (UMP native) descriptor support. Driver features: - UMP (Universal MIDI Packet) read/write with atomic message framing - Protocol negotiation: Endpoint Discovery, Config Request/Notify, Function Block Discovery (embedded in driver) - Group Terminal Block descriptor via GET_DESCRIPTOR - Alt Setting switch handler with endpoint re-arm - Static allocation, no dynamic memory, ISR-safe Build system: - Register midi2d_* in usbd.c driver table - Add TUD_MIDI2_DESCRIPTOR macros to usbd.h - Add config defaults (CFG_TUD_MIDI2_*) to tusb_option.h - Add midi2_ump_word_count() to midi.h (shared by Device and Host) - Add midi2_device.c/h to family.cmake and CMakeLists.txt - Add midi2_device.h include to tusb.h All changes guarded by #if CFG_TUD_MIDI2 (default 0). Zero impact on existing drivers and examples. Tested: Raspberry Pi Pico (RP2040), Linux ALSA, Windows MIDI Services --- src/device/usbd.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'src/device/usbd.c') diff --git a/src/device/usbd.c b/src/device/usbd.c index 0e58f70bf..55ad330c1 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -254,6 +254,20 @@ static const usbd_class_driver_t _usbd_driver[] = { }, #endif + #if CFG_TUD_MIDI2 + { + .name = DRIVER_NAME("MIDI2"), + .init = midi2d_init, + .deinit = midi2d_deinit, + .open = midi2d_open, + .reset = midi2d_reset, + .control_xfer_cb = midi2d_control_xfer_cb, + .xfer_cb = midi2d_xfer_cb, + .xfer_isr = NULL, + .sof = NULL + }, + #endif + #if CFG_TUD_VENDOR { .name = DRIVER_NAME("VENDOR"), -- cgit v1.3.1