Commit Graph

73 Commits

Author SHA1 Message Date
Dan Halbert 40434d6919 wip 2019-12-05 22:45:53 -05:00
Dan Halbert 1ccb7b4c5e cosmetic commit, mostly to re-run 2019-11-22 16:30:10 -05:00
Dan Halbert 13375d16f1 change mpconfigport.mk files so they can be overriden by mpconfigboard.mk 2019-11-22 15:44:51 -05:00
sommersoft 2e4b687ba5 enable audiomixer on nrf 2019-08-25 07:32:48 -05:00
Jeff Epler 79f8a85786 nrf: stub out audiobusio.PDMIn, audiobusio.I2SOut 2019-08-18 15:55:57 -05:00
Jeff Epler a183425e00 ports/nrf: Implement audioio.AudioOut using PWM
This implements AudioOut, with known caveats:
 * pause/resume are not yet implemented (this is just a bug)
 * at best, the sample fidelity is 8 bits (this is a hardware limitation)

Testing performed:

My test system is a Particle Xenon with a PAM8302 op-amp
https://www.adafruit.com/product/2130 and 8-ohm speaker.  There's no
analog filtering between the Xenon's PWM pin and the "A+" input of
the amplifier; the "A-" pin is disconnected.  It is powered from
VUSB.

I used pin D4, which is *NOT* listed as a low-speed-only pin, but
the code does NOT switch the pin to high drive.  This is related to
an open issue for general inability to set drive level for pins
being used by a "special function" on nrf:
https://github.com/adafruit/circuitpython/issues/1270

Nothing about the code I've written should limit the usable pins.

All samples I played were 16-bit, generally monophonic at 11025Hz
and 22050Hz from the Debian LibreOffice package.
2019-07-26 07:57:11 -05:00
Nick Moore 531cf7eb4c switch CIRCUITPY_NVM on! 2019-04-16 14:53:44 +10:00
Scott Shawcroft 254d0a53ac
Revert "nrf nvm: touchups to nickzoic PR #1768" 2019-04-15 18:50:33 -07:00
Nick Moore 592bd0140a switch CIRCUITPY_NVM on! 2019-04-09 10:55:15 +10:00
Scott Shawcroft 92095eb666 Update comment 2019-04-02 13:28:35 +11:00
Nick Moore 4a5c52fbd6 starting on #1046 rtc for nRF 2019-04-02 13:27:00 +11:00
Dan Halbert 0653bca323
Revert "Circuitpython nickzoic 1046 nrf rtc" 2019-03-29 16:41:29 -04:00
Scott Shawcroft 98811a9675
Update comment 2019-03-28 09:29:18 -07:00
Nick Moore 77f307c642 starting on #1046 rtc for nRF 2019-03-28 09:50:09 +11:00
Dan Halbert fe555a4098 Allow NFC pins to be used for other purposes. 2019-03-21 11:22:58 -04:00
sommersoft 2cd6a79016 better handle frequencyio inclusion 2019-03-01 22:46:57 -06:00
Dan Halbert 5ec92415b0 fix module weak links; add missing nrf features 2019-02-17 17:29:28 -05:00
Dan Halbert a345ef28f2 finish Makefile refactoring; nrf builds work 2019-02-15 18:55:10 -05:00
Scott Shawcroft 9d91111b1b
Move atmel-samd to tinyusb and support nRF flash.
This started while adding USB MIDI support (and descriptor support is
in this change.) When seeing that I'd have to implement the MIDI class
logic twice, once for atmel-samd and once for nrf, I decided to refactor
the USB stack so its shared across ports. This has led to a number of
changes that remove items from the ports folder and move them into
supervisor.

Furthermore, we had external SPI flash support for nrf pending so I
factored out the connection between the usb stack and the flash API as
well. This PR also includes the QSPI support for nRF.
2018-11-08 17:25:30 -08:00
Dan Halbert 065e82015f merge from 2.2.0 + fix up board defs 2018-01-02 21:25:41 -05:00
microbuilder 60a23f0fb6 nRF52 update with internal file system support 2017-12-21 13:49:14 +01:00
Kevin Townsend ce75a21e50 Revert "Supervisor REPL support for ports/nrf/boards/feather52"
This reverts commit 92113dde81.
2017-11-23 13:38:38 +01:00
Kevin Townsend 92113dde81 Supervisor REPL support for ports/nrf/boards/feather52 2017-11-23 09:22:11 +01:00