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9 Commits

Author SHA1 Message Date
Dan Halbert 2451c788f4 valid channels in audio_dma_stop; cleaner supervisor_ticks mgmt in keypad 2021-08-09 09:47:13 -04:00
Dan Halbert bd6826496c Fix various RP2040 audio dma things: (see detailed commit message) 
1. Check for correct error values from dma_claim_unused_channel.
2. Introduce a .stereo flag for simplicity.
3. Clarify PWM carrier frequency choice.
4. Start introducing quiescent audio value. Still need to ramp up/down.
5. Redo audio stop logic a bit.
6. Fix (unrelated) displayio dependency things.

There is still an interference problem between other DMA users and audio. Still debugging this.
 2021-07-08 08:14:49 -04:00
Dan Halbert 33bbb8b1f4 RP2040 PWMAudioOut: Release DMA channels after play has finished. 2021-07-01 17:36:29 -04:00
root 8761e4bfd7 Initialize pacing timer 2021-05-30 12:12:38 -05:00
root a2b220370e Fix formatting issue 2021-05-29 12:26:41 -05:00
root 760e8c77bd Changes to correct repeat playing on a channel 2021-05-29 11:55:10 -05:00
root 24e641a834 Fix for Issue #4266 2021-05-25 16:06:00 -05:00
microDev a52eb88031
run code formatting script 2021-03-15 19:27:36 +05:30
Scott Shawcroft 191b143e7b
Add PWM based audio playback 
See
https://learn.adafruit.com/circuitpython-essentials/circuitpython-audio-out
to get started.

Fixes #4037
 2021-02-09 15:38:33 -08:00