1.6.2 - 2020.09.08

• Update Adafruit_TinyUSB_ArduinoCore to commit 238a5c0b95fcd402d24524c7bebbdd822168a51e
• Fix external pin interrupt definition for most boards.
• Add 2 new boards: "BLM Badge" and "Portal Matrix"
• Fix lots of compiler warnings
• Fix SPI DMA bug and allow big non-blocking transfers
• Fix incorrect tone() usage of Timer: use TC1 for servo, TC0 for tone in samd51

1.6.1 - 2020.07.21

• Fixed CI build
• Fixed duplicated Grand Central M4 in index file arduino/arduino-pro-ide#262

1.6.0 - 2020.07.07

• Fixed I2C SERCOM Hang (from Arduino SAMD core)
• Added BLE UART test support
• Update toolchain from gcc 7-2017q4 to gcc 9-2019q4
• Update CMSIS from 4.5.0 to 5.4.0

Special thanks to @prototypicalpro

1.5.14 - 2020.05.04

• fix SAMD21 USB issue with TinyUSB adafruit/Adafruit_TinyUSB_Arduino#60

1.5.13 - 2020.04.23

• Fix warnings on Feather M0
• Increase MIDI buffer size from 64 to 128
• Updated TinyUSB to commit c59fa77

1.5.11 - 2020.02.27

• Fix Arduino warning
• First release affected by adafruit/arduino-board-index#52 , bump gcc and other tool version

1.5.10 - 2019.12.31

Add new defines to all variants that has on-board flash

• EXTERNAL_FLASH_USE_QSPI
• EXTERNAL_FLASH_USE_SPI / EXTERNAL_FLASH_USE_CS

1.5.9 - 2019.12.31

Print::availableForWrite() return int instead of size_t

1.5.8 - 2019.12.30

Core

• SAMD21 Fix freq clipping in SPI.h, allow 24 Mhz SPI

TinyUSB

• Moved TinyUSB core into submodule at https://github.com/adafruit/Adafruit_TinyUSB_ArduinoCore
• Added USBD detach/attach API
• Fixed USB racing condition when mounted via a Hub, accessing external flashes under certain circumstances
• Synced TinyUSB with upstream

webUSB support

• Update tinyusb core to support webUSB & vendor class
• Fixed RAMSTART, RAMSIZE, RAMEND for samd51 and same21
• Added hallowing_m4 variant
• Fixed tone()
• Added Serial.availableForWrite()