Max/earlephilhower_arduino-pico
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8 Commits
Author SHA1 Message Date
Earle F. Philhower, III cc800713bd Minor clean up includes (#1520) 2023-06-10 20:42:28 -07:00
Linar Yusupov c6a0d6ecfe Fix for invalid __channelCount in ~AudioBufferManager() (#1519) 2023-06-10 10:51:19 -07:00
Earle F. Philhower, III 3c408dab7c AudioBufferManager(I2s, PWMAudio, ADCInput) clicking fix (#1500) 
The ABM had an off-by-one error in the DMA buffer swapover.  Instead of
setting the DMA address to the newly added buffer in active[], it set it
to the buffer that was currently running.

This would effectively disable the ping-pong and cause clicks/lost data.

Fixes #1491
 2023-06-04 18:40:29 -07:00
LinusHeu 45bbcca207 AudioBufferManager: Make dma_claim_unused_channel() not panic (#1487) 2023-05-30 15:51:07 -07:00
Earle F. Philhower, III b6cb2e7edc Avoid race condition in I2S/PWMAudio delete (#1163) 
Fixes #1162

Disable DMA interrupts while we're tearing down an AudioBufferManager
and explicitly clear any potential leftover IRQs to avoid hangs.
 2023-02-09 13:29:45 -08:00
Earle F. Philhower, III da26016edf DMA-based ADC input (microphone, analog sensor) (#1101) 
Mimics the I2S/PWMAudio/Stream interface for ease of use.

* Fix non-32b DMA size transfer calculation in ABM
* Rename wasHolding to isHolding in the I2S/PWM
  It is the **current** number of bits left, not the past number.
* Add commented microphone example
* Add docs
 2023-01-05 16:00:34 -08:00
Earle F. Philhower, III 02465b48b3 Allow on-the-fly changes to PWMAudio when possible (#1098) 
Also fix crash on PWMAudio::end()
 2023-01-03 16:02:43 -08:00
Earle F. Philhower, III 08d37de94e Add PWMAudio for DAC-free audio playback (#1076) 
Use the PWM hardware to generate a signal suitable for filtering and
amplifying 16bps audio output.

Refactor the AudioBufferManager to allow sharing with I2S

Add example
 2022-12-30 13:24:06 -08:00