suspect-devices/circuitpython/shared-bindings/audiobusio, branch 4.0.0-alphaCircuitPython - a Python implementation for teaching coding with microcontrollershttps://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=4.0.0-alpha2018-05-08T20:00:05+00:00Make resume idempotent (allowing you to call it twice without complaining.)2018-05-08T20:00:05+00:00Scott Shawcroftscott.shawcroft@gmail.com2018-05-08T20:00:05+00:00urn:sha1:fc7c25af6dde340fe67e36f9effcc09212734c69Tweak exception message.2018-05-08T19:44:27+00:00Scott Shawcroftscott.shawcroft@gmail.com2018-05-08T19:44:27+00:00urn:sha1:24116eff231df034c3ffed0529a4790545ba5412Add pause/resume control to AudioOut and I2SOut2018-05-08T18:53:13+00:00Scott Shawcroftscott.shawcroft@gmail.com2018-05-08T00:47:29+00:00urn:sha1:50fc90bc5f74dbd7c01e53b02650127ca408f0ae
Fixes #808
Re-enable PDMIn without ASF and using the helpers added with2018-05-01T21:35:43+00:00Scott Shawcroftscott.shawcroft@gmail.com2018-04-26T19:51:37+00:00urn:sha1:cfea51ec68504710ee683e77fada7adf4c3cffd4
I2SOut.
The API is almost the same except the frequency attribute has been
renamed to sample_rate so that its less likely to be confused with
frequencies within the audio itself.
Fixes #263.
Add audio output support!2018-04-12T23:35:13+00:00Scott Shawcroftscott.shawcroft@gmail.com2018-03-12T23:09:13+00:00urn:sha1:28642ab10d6b32fe91dce916d6d57e1b5b9607bc
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
Merge remote-tracking branch 'adafruit/2.x' into merge_2x2018-02-27T23:24:16+00:00Scott Shawcroftscott.shawcroft@gmail.com2018-02-27T23:24:16+00:00urn:sha1:bf05183158c67c4ef1824c3b1296d401bc7754d8Delete a bunch of docs, drivers and examples not relevant to CircuitPython.2018-02-21T01:34:59+00:00Scott Shawcroftscott.shawcroft@gmail.com2018-02-21T01:34:59+00:00urn:sha1:20dd3b1e434f57a0609fd5306f47863396d1022e
This fixes #345 and fixes #215.
shared-bindings: Fix incorrect code comments2018-02-06T21:03:17+00:00arturo182arturo182@tlen.pl2018-02-06T21:03:17+00:00urn:sha1:ff041caa52fcf7a15f0b18f5f1edf1c972f86e50
Most likely caused by copy-paste.
merge from 2.2.0 + fix up board defs2018-01-03T02:25:41+00:00Dan Halberthalbert@halwitz.org2018-01-03T02:25:41+00:00urn:sha1:065e82015f0d2bd6732c62b7375fcc7af87fa0cfFix PDMIn MEMS microphone support (#479)2017-12-13T18:12:49+00:00Dan Halberthalbert@halwitz.org2017-12-13T18:12:49+00:00urn:sha1:43650b689674a18b95d520921d10a91b67f64c84
Changes:
* New faster filter loop, by @ladyada. New filter coefficients as well.
* Turn on microphone clock when PDMIn object is created, and run it all the time, so the user code doesn't have to wait for microphone startup, which can be 10ms or even 100ms.
* Wait for microphone startup when PDMIn is first created, based on new optional parameter microphone_startup in seconds (takes a float).
* record() returns number of samples actually recorded, so you can see if it's not keeping up.
* Fix buffer overflow errors when buffer size was not a multiple of 16 or something like that.
* Tweak a few peripheral settings.
* Minimum sampling frequency is now 16kHZ or so, because 8kHz runs microphone at only 0.5MHz, which is too slow for many mics.
Note: I tried 128x oversampling instead of 64x, but the code cannot keep up at 24kHz or above sampling. 128x would reduce the high-frequency noise by 6db.