circuitpython

Author	SHA1	Message	Date
Scott Shawcroft	383bf9a59e	Wait for the DFLL to be stable.	2018-06-08 12:56:32 -07:00
Scott Shawcroft	e580d22f4a	Use the external crystal on SAMD21 again. Also, re-enable calibration storage for CircuitPlayground Express. Tested with a 500hz PWMOut on Metro M0 with Saleae: * with crystal 500hz * with usb 500hz +- 0.1hz * without either 487hz += 0.1hz SAMD51 is skipped due to DFLL errata and the fact it defaults to a factory calibrated 48mhz that works fine for USB. Fixes #648	2018-06-01 18:01:42 -07:00
Scott Shawcroft	717199018b	Adapt for feedback and hack around pIRkey size constraint.	2018-06-01 15:08:52 -07:00
Scott Shawcroft	d0fb6e7a2f	atmel-samd: Add rotary encoder support. Fixes #283	2018-06-01 15:08:48 -07:00
Scott Shawcroft	fd71e56891	atmel-samd: Re-org helper peripheral files into their own subdirectory. Ideally in the future they won't depend on ASF4 or MicroPython.	2018-06-01 15:07:31 -07:00