CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=main 2020-03-17T21:21:45+00:00 2020-03-17T21:21:45+00:00 Scott Shawcroft scott@tannewt.org 2020-03-17T21:21:45+00:00 urn:sha1:6db11cf68ba2d5e17c6267f36f516bc0abce4643 2019-11-18T17:01:23+00:00 Jeff Epler jepler@gmail.com 2019-11-18T14:22:41+00:00 urn:sha1:7f744a2369a5036cadfa05575da1704f709c98bb This code is shared by most parts, except where not all the #ifdefs inside the tick function were present in all ports. This mostly would have broken gamepad tick support on non-samd ports. The "ms32" and "ms64" variants of the tick functions are introduced because there is no 64-bit atomic read. Disabling interrupts avoids a low probability bug where milliseconds could be off by ~49.5 days once every ~49.5 days (2^32 ms). Avoiding disabling interrupts when only the low 32 bits are needed is a minor optimization. Testing performed: on metro m4 express, USB still works and time.monotonic_ns() still counts up 2019-10-11T06:23:51+00:00 Kamil Tomaszewski kamil.tomaszewski@sony.com 2019-10-11T06:09:15+00:00 urn:sha1:1fa8841d20ef973e71dce52978de59c6dd6f918b