Release v2.0.0 · microbit-foundation/micropython-microbit-v2

Fixed issue where display.get_pixel() returned values in the range 0..255 instead of 0..9 (as V1) (#75)
Fixed issue playing Sound expressions in the background (#76)
Fixed issue grabbing pins when switching between different music/sound modes (#50)
Fixed issues with ADC measurements (#65, #66)
Fixed issue where UART pins were not redirected to the USB pins on a second call to uart.init() (#70)
Added Code of Conduct to the repository (#71)
Enable BLE partial flashing (#77)
Fixed internal name of microbit.speaker type to MicroBitSpeaker
Updated to the latest MicroPython on the 02/05/2021 (micropython/micropython@1e2f0d2)
Updated CODAL to v0.2.31
- codal-microbit-v2:
  - mixer: add isSilent() and fire SOUND/SILENCE events
  - Introduction of persistent logging API
  - improvements to MicroBitLog
  - make private pin variable a pointer, to fix pins becoming other pins
  - deep sleep support
  - fix memory leak in MicroBitAudio::setSleep()/enable()
- codal-core:
  - add default atomic operations for reference counted types
  - add events to CodalUSB
  - ifguard uf2_info in GhostFAT implementation
  - introduce framework for power efficient deep sleep
- codal-nrf52:
  - USB for the nrf52 family
  - NRF52Serial - Avoid overwriting pin definitions during redirection
  - NRF52Serial::configurePins - wait for TX buffer to empty
  - NRF52ADC: Improvements to discrete sampling
  - NRF52I2C Workaround for missed SHORT trigger
  - update drivers to support deep sleep mode

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