5 commits

Author	SHA1	Message	Date
Earle F. Philhower, III	5b76b0668b	Addition ABM checks in PWMAudio and ADCInput (#1530) ... Handle the case where the DMA manager is unable to completely allocate needed resources (DMA channels or memory) and return `false` in ::begin()	2023-06-12 15:20:52 -07:00
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	1228251bc3	Add stereo support, docs for PWM playback (#1084) ... Limited to consecutive pins (i.e. GPIOs on the same PWM slice). "For free" with PWM since no add'l DMA, buffers, or IRQs are needed.	2023-01-01 11:27:49 -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