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circuitpython/ports/raspberrypi/common-hal/audiobusio
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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
..
I2SOut.c Fix various RP2040 audio dma things: (see detailed commit message) 2021-07-08 08:14:49 -04:00
I2SOut.h RP2040 PWMAudioOut: Release DMA channels after play has finished. 2021-07-01 17:36:29 -04:00
PDMIn.c raspberrypi: Implement ParallelImageCapture using PIO 2021-04-22 12:02:51 -05:00
PDMIn.h Implement audiobusio and enhance PIO for it 2021-02-23 15:50:00 -08:00
__init__.c Implement audiobusio and enhance PIO for it 2021-02-23 15:50:00 -08:00