CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=2.x 2017-02-19T16:22:42+00:00 2017-02-19T16:22:42+00:00 Scott Shawcroft scott.shawcroft@gmail.com 2017-02-19T16:22:42+00:00 urn:sha1:f0b62a2b0eef5d6a825d6ca19a8c50f019e2628f 2016-11-07T06:13:49+00:00 Olivier Ortigues o.ortigues@gmail.com 2016-10-18T20:43:43+00:00 urn:sha1:bc4441afa753176e1901017708d8a739c38806eb At the WS2812 driver level, a 400ns value was used for T0H (time high to send a 0 bit) but LED specification says it should be 350ns +- 150ns. Due to loop overhead the 400ns value could lead to T0H close to 500ns which is too close from the limit value and gave glitches (bad data to pixels) in some cases. This patch makes the calculated T0H value 350ns. 2016-10-08T21:56:46+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-10-08T21:56:46+00:00 urn:sha1:3b3612c65b2de4fdb2d21945e98d1dad7e46b6d6 To save iRAM. 2016-09-06T01:51:35+00:00 Torsten Wagner torsten.wagner@fh-aachen.de 2016-06-30T09:11:56+00:00 urn:sha1:69768c97c060d1b6160e2abcd2fda9c63ce65a2d Interrupts during neopixel_write causes timing problems and therefore wrong light patterns. Switching off IRQs should help to keep the strict timing schedule. 2016-08-07T13:03:00+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2016-08-07T13:03:00+00:00 urn:sha1:f71f37e4269b43222d6b1b812e7109e946345b53 2016-03-26T08:55:21+00:00 Damien George damien.p.george@gmail.com 2016-02-11T13:19:11+00:00 urn:sha1:3962766be08f0ccd81bedab1a5d1d8f6468f972e