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third_party/tinyusb/docs/changelog/0.20.0.md

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+# 0.20.0
+
+*November 19, 2025*
+
+## General
+
+### New MCUs and Boards
+
+- Add STM32U3 device support (adjusted from STM32U0)
+- Add nRF54H20 support with initial board configuration
+- Rename board names: pca10056→nrf52840dk, pca10059→nrf52840dongle, pca10095→nrf5340dk
+- Improve CMake: Move startup and linker files from board target to executable. Enhance target warning flags and fix various build warnings
+
+### Code Quality and Static Analysis
+
+- Add PVS-Studio static analysis to CI
+- Add SonarQube scan support
+- Add IAR C-Stat analysis capability
+- Add `.clang-format` for consistent code formatting
+- Fix numerous alerts and warnings found by static analysis tools
+
+### Documentation
+
+- Improve Getting Started documentation structure and flow
+- Add naming conventions and buffer handling documentation
+
+## Controller Driver (DCD & HCD)
+
+### DWC2
+
+- Fix incorrect handling of Zero-Length Packets (ZLP) in the DWC2 driver when receiving data (OUT transfers)
+- Improve EP0 multi-packet logic
+- Support EP0 with max packet size = 8
+- For IN endpoint, write initial packet directly to FIFO and only use TXFE interrupt for subsequent packets
+- Fix ISO with bInterval > 2 using incomplete IN interrupt handling.
+- Fix compile issues when enabling both host and device
+- Clear pending suspend interrupt after USB reset (enum end)
+- Improve host closing endpoint and channel handling when device is unplugged
+
+### FSDEV (STM32)
+
+- Fix AT32 USB interrupt remapping in `dcd_int_enable()`
+
+### OHCI
+
+- Add initial LPC55 OHCI support
+- Improve data cache support
+
+## Device Stack
+
+### USBD Core
+
+- Support configurable EP0 buffer size CFG_TUD_ENDPOINT0_BUFSIZE
+- Make dcd_edpt_iso_alloc/activate as default API for ISO endpoint
+
+### Audio
+
+- Add UAC1 support
+- Implement RX FIFO threshold adjustment with `tud_audio_get/set_ep_in_fifo_threshold()`
+
+### CDC
+
+- Migrate to endpoint stream API
+
+### HID
+
+- Fix HID stylus descriptor
+
+### MIDI
+
+- Migrate to endpoint stream API
+- Add `tud_midi_n_packet_write_n()` and `tud_midi_n_packet_read_n()`
+
+### MTP
+
+- Fix incorrect MTP xact_len calculation
+
+### Video
+
+- Add bufferless operation callback for dynamic frame generation with tud_video_prepare_payload_cb()
+
+## Host Stack
+
+No changes
+
+## Contributors
+
+Thanks to everyone who contributed to this release: @adam-embedded, @ArcaneNibble, @c1570, @embedded-ideas, @gabChouin, @hathach, @HiFiPhile, @karlp, @ldube, @peppapighs, @poornadharshan13-rgb, @RigoLigoRLC, @tangpipi, @ToonVanEyck, @tswan22.