Commit Graph

9 Commits

Author SHA1 Message Date
microDev a52eb88031
run code formatting script 2021-03-15 19:27:36 +05:30
Jeff Epler 6b44e40ee8 audiocore: Factor from audioio
When nrf pwm audio is introduced, it will be called `audiopwmio`.  To
enable code sharing with the existing (dac-based) `audioio`, factor
the sample and mixer types to `audiocore`.

INCOMPATIBLE CHANGE: Now, `Mixer`, `RawSample` and `WaveFile` must
be imported from `audiocore`, not `audioio`.
2019-07-25 06:44:26 -05:00
Scott Shawcroft c209165d43
Ramp values to and from a default value while active.
This reduces the popping sound on initial playback of an audio
sample.

The M4 DAC has a pop on startup that cannot be prevented. It also
does not allow readback so current values of the DAC are ignored.

Fixes #1090
2018-10-16 16:23:29 -07:00
Scott Shawcroft 50fc90bc5f Add pause/resume control to AudioOut and I2SOut
Fixes #808
2018-05-08 11:53:13 -07:00
Scott Shawcroft 28642ab10d Add audio output support!
This evolves the API from 2.x (and breaks it). Playback devices are now
separate from the samples themselves. This allows for greater playback
flexibility. Two sample sources are audioio.RawSample and audioio.WaveFile.
They can both be mono or stereo. They can be output to audioio.AudioOut or
audiobusio.I2SOut.

Internally, the dma tracking has changed from a TC counting block transfers
to an interrupt generated by the block event sent to the EVSYS. This reduces
the overhead of each DMA transfer so multiple can occure without using up TCs.

Fixes #652. Fixes #522. Huge progress on #263
2018-04-12 16:35:13 -07:00
Dan Halbert c478c10923 Do not allow a *io object to be used after deinit().
Fixes #278, #277, #276, #275.
2017-10-03 12:07:17 -07:00
Dan Halbert ef61b5ecb5 Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master.
cpx build compiles and loads and works in repl; test suite not run yet
esp8266 not tested yet
2017-08-25 22:17:07 -04:00
Scott Shawcroft f878bc4efc atmel-samd: Fix AudioOut buffer playback by supporting bytes_per_sample.
Thanks to @ntoll for finding this bug!
2017-07-12 11:55:49 -07:00
Scott Shawcroft 58b9789d0c atmel-samd: Introduce audio sample playback via audioio.AudioOut. 2017-05-01 13:10:03 -07:00