Upgrade MicroPython to 2.1.0-beta.3

[microbit-robert]

No description provided.

[github-actions]

Preview build will be at
https://review-python-editor-next.microbit.org/micropython-update/

[microbit-robert]

The following code works with the update (i.e., the use of waveform). However, the micro:bit constantly generates noise after the sound effect has played and cannot be stopped.

from microbit import *

a = audio.SoundEffect()
a.waveform = audio.SoundEffect.WAVEFORM_SINE
while True:
    if button_a.was_pressed():
        audio.play(a)
    if button_b.was_pressed():
        audio.stop()
    sleep(500)

[microbit-carlos]

Looks like playing any Sound Expression triggers this, same problem with audio.play(Sound.HAPPY):

• Playing a sound effect crashes MicroPython lancaster-university/codal-microbit-v2#228

[microbit-carlos]

This is likely something introduced by CODAL, I think I'll retract beta.2, and release beta.3 with an older CODAL.

[JohnVidler]

This should now have been fixed in CODAL v0.2.43 ( https://github.com/lancaster-university/codal-microbit-v2/releases/tag/v0.2.43 ) which removes a single timing line in the emoji synth that seems to selectively affect higher-level languages.

[microbit-matt-hillsdon]

Looks good now. I've added the type stubs and we've updated the simulator on microbit-foundation/micropython-microbit-v2-simulator#65