What's Changed

• Fixed Serial_::begin(..) definition to match arduino::HardwareSerial by @cmaglie in #672
• Document how to add the required link to ArduinoCore-API. by @aentinger in #676
• Update I2S.cpp to work with RTCZero library by @Khosos in #692
• Updated naming of boards by @jhansson-ard in #696
• Updated naming of MKR boards by @jhansson-ard in #695
• USB CDC: Line Info Per Instance by @skulblakka in #713
• Fix variant docs Issue #507 by @henklaak in #714

New Contributors

• @Khosos made their first contribution in #692
• @jhansson-ard made their first contribution in #696
• @skulblakka made their first contribution in #713
• @henklaak made their first contribution in #714

Full Changelog: 1.8.13...1.8.14

Contributors

• @cmaglie
• @skulblakka
• @aentinger
• @henklaak
• @Khosos
• @jhansson-ard

Regressions fixed:

• Fix upload via openODC (Arduino Zero Programming port)

Fixes:

• SerialCDC now inherits from HardwareSerial (makes it easier to create classes that accept both Serial and Serial1 objects
• Fix USBDevice.connected()
• Align HID library with AVR

Regressions fixed:

• Fix Serial.flush()
• Use 12MHz as maximum SPI speed
• UART: Ringbuffer size is back to 256 bytes

Improvements:

• Refactor programmers menu and add Jlink to the available programmers

Changelog

Fix some bugs exposed by ArduinoCore-API migration

• SPI clock is now limited to F_CPU/2
• RingBuffer access for UART is now IRQ safe (fixes issues with high speed serial communication)
• Get rid of all warnings
• Allow inclusion of <avr/pgmspace.h> (backwards compatibility)

Changelog

First release with ArduinoCore-API support
While aiming for maximum backwards compatibility, this will likely expose some "unofficial" behaviours on 3rd party libraries, resulting in compilation errors.
We'll work closely with the maintainers to fix them as soon as possibile.

Wire
requestFrom can return more than 256 bytes

• Correct MKR Vidor 4000 PB09 notes (#505)
• Update comments in mkrvidor4000/clockout.c (#508)
• Allow configuration of USB SRAM QOS (#509)
• Adding SFU (Serial Flash Updater - loads firmware image from SPIFFS formatted MKR MEM shield) (#513)
• Allow Arduino development software to display % usage, remaining, and total for SRAM. (#517)
• Fix crash when calling tone() with frequency 0 (#520)
• Fixed program (upload-with-programmer) recipe. (#525)
• Adding missing section .sketch_boot for Nano 33 IoT (#529)
• Adding SNU (Serial Nina Updater - loads firmware image from Nina module storage) (#512) (incl. LZSS compressed binaries #544)
• Adding SSU (Serial Sara Updater - loads firmware image from MKR GSM 1400 modem storage) (#534) (incl. LZSS compressed binaries #548)
• Adding SBU (Serial MKR NB 1500 Updater - loads firmware image from MKR NB 1500 modem storage) (#549) (incl. LZSS compressed binaries #551)
• Fixing comment in mkrnb1500/variant.cpp (#550)

• Adding various recipes to support the new debugging functionality via arduino-cli and Arduino Pro IDE
• Fixing of platform.txt's regular expressions allows to display Flash and RAM usage when building applications with the SAMD core
• Added I2S definitions for Arduino Nano 33 IoT (b2fce4c)
• Improvement of documentation for pinout of MKRWAN1310/SPI1 ( e7b7923 )

Bugfix:
Fix post_install script on Windows x86 (32bit)
Wait for first ADC read to complete after ADC enable.
Fixing infinite hang within 'noTone' if it is called before 'tone' was called at least once

New:
Update Bootloader for arduino.org boards
Remove Genuino strings
Add Arduino MKRWAN1310 support