v2.1.2

The only change in this release is:

• Update the neopixel module to increase compatibility with other ws2812 variants (#161)

v2.1.1

• Fix issue controlling pin 11 (#136)
• Fix issue where stopping execution with Ctrl+C could continue executing code (#134)
• Configure MicroPython with MICROPY_PY_BUILTINS_STR_UNICODE (unicode strings) and MICROPY_PY_BUILTINS_FROZENSET (frozenset) build flags to match V1 (#138)
• Remove (unused, undocumented, and not working) support for None as a music tune rest (#139)
• Fix audio and speech pin mode configuration when playing (#137)

Full Changelog: v2.1.0...v2.1.1

v2.1.0

• microphone.sound_level() now uses a better SPL algorithm with better range detection (#122)
• Setting the audio.SoundEffect constructor arguments and/or attributes to out of range values now throws an exception (#120, #129)
• audio.SoundEffect.fx no longer returns None instead of 0 (the constant FX_NONE value) (#130)
• Update microbit.scale() to set the output type depending on the to parameter type (#121)
• Fix issue where power.deep_sleep() with a ms argument would block until the time elapsed when it was woken up via other wake up sources (#119, #128)
• power.deep_sleep() parameter run_every updated to configure if microbit.run_every functions will continue to run while the board sleeps (#118)
  • Before the micro:bit would wake up at the next scheduled function event, and it was up to the user code to go back to sleep
  • Now it will automatically go back to sleep until the next scheduled event, or configured wake up source
• Add UART as a wake up source from Deep Sleep (#127)
• Fix issue where trying to go to Deep Sleep without wake up sources didn't work (#126)
• Update CODAL from v0.2.42-hotfix.1 to v0.2.43 tag
  • Changes to codal-microbit-v2:
    • deepSleep() with no wake targets will now actually deep sleep.
    • Serial ports can now be used to wake the board from deep sleep.
    • New configuration flag MICROBIT_USB_SERIAL_WAKE can now be set to configure the board to wake on serial input.
  • Changes to codal-core:
    • Fixed spurious mic activation due to overlapping device IDs between CodalComponent and MicroBitCompat.

For a full list of commits since the last release: v2.1.0-beta.3...v2.1.0

v2.1.0-beta.3

• Fix issue introduced in beta.2 playing SoundEffects (#124)
• Update CODAL from v0.2.42 to v0.2.42-hotfix.1 with the fix for #124

For a full list of commits since the last release: v2.1.0-beta.2...v2.1.0-beta.3

v2.1.0-beta.2

• SoundEffect() parameter wave renamed to waveform (bbcmicrobit/micropython#765)
• Fix issue where power.deep_sleep() blocked until the time specified via argument elapsed (lancaster-university/codal-microbit-v2#221)
• Update CODAL from v0.2.40 to v0.2.42 tag.
  • Fixed an off-by-one error in FiberLock whereby a semaphore-mode lock would have 1 slot fewer than expected [codal-core::feature/enhanced-lock]
  • Fixed an off-by-one error in the device pacic codes in MicroBitError, where all codes were one higher than needed (leaving code 50 empty) [codal-microbit-v2::bug/panic-code-offset]
  • Added a new deepSleep() call to support a kind of interruptable deep sleep mode, to better support the way Python sleeps [codal-microbit-v2::feature/interruptable-deep-sleep]
  • Minor patch to show --status without pagenation, for easier code status review
  • Improved sound level detection sensitivity to 35db from 52db, re-calibrated parameters for accuracy, and introduced optional 8 bit range sound level API
  • Merged a new NRF52LEDMatrix::rotateTo function (Thanks Martin!)

Known issues:

• audio.SoundEffects and microbit.Sound have playback issues (#124)

For a full list of commits since the last release: v2.1.0-beta.1...v2.1.0-beta.2

v2.1.0-beta.1

GitHub milestone: https://github.com/microbit-foundation/micropython-microbit-v2/milestone/4?closed=1

• Add log module for data logging (bbcmicrobit/micropython#720)
  • https://microbit.org/get-started/user-guide/data-logging/
• Add audio.SoundEffect class to create custom sounds (#103, bbcmicrobit/micropython#753)
• Add initial version of the power module for power management (#60, bbcmicrobit/micropython#754)
• Add microbit.run_every function/decorator, to schedule functions at a set interval (bbcmicrobit/micropython#720)
• Add microbit.scale() function to scale values between different ranges (#102, bbcmicrobit/micropython#762)
• Add microbit.accelerometer.get_strength() method (#81)
• Add microbit.accelerometer.set_range() method (bbcmicrobit/micropython#264)
• Add microbit.Image.SCISSORS image (bbcmicrobit/micropython#602)
• Allow value of 2 to be set for radio.config() data_rate parameter, to select the 250 Kbit rate for compatibility for V1 (#87)
• Importing the radio module now turns on the radio automatically (#97)
• A couple of sound differences with V1 fixed via CODAL update (#47, #67)
• Fix shift_down(), shift_left(), shift_right(), shift_up(), methods from microbit.Image to retain the original image width/height (bbcmicrobit/micropython#718)
• Fix issues where the first return value of microbit.microphone.current_event() could be None instead of the "quiet" sound event (#86)
• Fix filesystem issue where it wouldn't sweep when there was just a few free chunks (#105)
• Lock scheduler when starting audio pipeline to avoid scheduler starting a fetch at the same time (#47)
• Update MicroPython from v1.6 to v1.18: micropython/micropython@1e2f0d2...v1.18
• Update CODAL from v0.2.31 to v0.2.40 tag.
  • codal-microbit-v2:
    • stabilize I2C communications between NRF52 and KL27 DAPLINK chip when
      running on battery
    • improvements and optimizations to MicroBitLog
    • ensure mutual exclusion for all MicroBitLog APIs
    • introduce workaround for back-to-back I2C Flash transactions using KL27
      DAPLink firmware
    • move to runtime configuration of I2C DAPLink interface
    • update MicroBitLog serial mirroring to emit CRLF
    • option for Nordic Default UART characteristics
    • BLE: make Device Info Service Model Number String sensitive to board ID
    • fix typo in MicroBitLog units
    • increase resolution of SoundOutputPin playback; this reduces the period
      of generated sound from 50ms to 5ms, providing better approximation to
      micro:bit v1 PWM based behaviour
    • update to DAPLink I2C Protocol v2
    • implement fixed size journal and metadata regions
    • unify available off-chip flash
    • introduce delay following FLASH_ERASE request
    • remove verbose debug in source/MicroBitUSBFlashManager.cpp
    • align DAPLink v1/v2 workarounds
    • add MicroBitPowerManager::readInterfaceRequest()
    • change variable sampleRate to float to avoid rounding errors when
      generating frequencies
    • improve audio input pipeline for microphone support
    • add per-channel volume control methods
    • increase DAPLink I2C wait for data to be ready timeout
    • add missing end frequency parameter to the log generator function
    • add polyphonic real-time synthesizer
    • fix MicroBitBLEManager support for MicroBitPowerManager::deepSleep
    • add support for the BUSY flag on the KL27
    • add the DAPLink version to the data logging HTM page
    • add MicroBitLog::readData
  • codal-core:
    • optimize and fix logical error in inline ManagedString != method
    • remove sample endpointRequest() impl
    • don't crash when not initialized
    • add REAL_TIME_FUNC attribute
    • put REAL_TIME_FUNC on functions that disable IRQs or are used from ISRs
    • use new FORCE_RAM_FUNC attribute
    • shorten IRQ-disabled period in DMESG
    • fix warnings
    • mark more functions real-time
    • FORCE_RAM_FUNC now correctly uses .data.ramfuncs rather than plain .data,
      to work with newer gcc versions
  • codal-nrf52
    • introduce transaction timeout for NRF52I2C
    • add case for 31250 in switch(baudrate)
  • codal-microbit-nrf5sdk
    • no changes

For a full list of commits since the last release: v2.0.0...v2.1.0-beta.1

v2.0.0

GitHub milestone: https://github.com/microbit-foundation/micropython-microbit-v2/milestone/6?closed=1

• 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

v2.0.0-beta.5

Changelog:

• Disable pin_speaker as a valid argument to play() pin argument in music/audio/speech (#63)
  • This pin can still use its own methods, like the PWM functionality
• Improves buffering and flow control to the audio mixer (#47)
• Updated CODAL to v0.2.25
  • Stability improvements with UART
  • Stability improvements with I2C
  • Improved accuracy of tone generation
  • Fixed timer resolution
  • Fixed issue in GPIO edge events
  • Added BLE Partial Flashing support for MicroPython
  • Fixed GPIO default pull mode to match V1

v2.0.0-beta.4

Changelog:

• Added the antigravity, love, and this modules from v1
• uart.read() doesn't trigger an OS error anymore if the buffer is empty (#45)
• Fixed issue where the random number generator was not being seeded and producing the same sequence of random numbers (#53)
• Fixed machine.time_pulse_us() (#26)
• Fixed pin.set_analog_period() (#54)
• Fixed issue where pin9 could not be used unless the display was disabled (#57)
• The CODAL version used has not been updated

v2.0.0-beta.3

Changelog:

• Added pin.set_touch_mode() method (#14).
• Updated the pin argument in audio/music/speech play function (#30).
• The speaker enable/disable methods have been moved from pin_speaker.enable()/disable(), to speaker.on()/off()
• Exceptions now show the line number on serial
• microphone.is_event() now check the current event instead of the last in the internal list
• Assembly decorator enabled
• Fixes issue building with debian-packaged Arm GCC (#5)
• Updated CODAL to v0.2.24
  • Fixes an issue with sequential PWM DMA writes that have a small delaybetween them, eg when driving Neopixels (#27).
  • Fixes issues with incorrect serial data on startup and when buffer overflows (#15, #35)
  • Fixes issue with 0-length i2c operations.