suspect-devices/circuitpython/extmod/machine_signal.c, branch 2.2.4CircuitPython - a Python implementation for teaching coding with microcontrollershttps://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=2.2.42017-07-26T02:51:46+00:00extmod/machine_signal: Fix parsing of invert arg when Pin is first arg.2017-07-26T02:51:46+00:00Damien Georgedamien.p.george@gmail.com2017-07-26T02:51:46+00:00urn:sha1:653a0c2d71100998a9cce0b7e2eb29ce54014aabextmod/machine_signal: Rename "inverted" arg to "invert", it's shorter.2017-04-15T18:01:47+00:00Damien Georgedamien.p.george@gmail.com2017-04-12T03:00:40+00:00urn:sha1:61616e84ce41e1b1a0fad62704488d79b87cfbe2
A shorter name takes less code size, less room in scripts and is faster to
type at the REPL.
Tests and HW-API examples are updated to reflect the change.
extmod/machine_signal: Support all Pin's arguments to the constructor.2017-04-10T21:12:20+00:00Paul Sokolovskypfalcon@users.sourceforge.net2017-04-10T21:12:20+00:00urn:sha1:605ff91efdeb3cd7e4948c0398c839a9ae06044a
This implements the orginal idea is that Signal is a subclass of Pin, and
thus can accept all the same argument as Pin, and additionally, "inverted"
param. On the practical side, it allows to avoid many enclosed parenses for
a typical declararion, e.g. for Zephyr:
Signal(Pin(("GPIO_0", 1))).
Of course, passing a Pin to Signal constructor is still supported and is the
most generic form (e.g. Unix port will only support such form, as it doesn't
have "builtin" Pins), what's introduces here is just practical readability
optimization.
"value" kwarg is treated as applying to a Signal (i.e. accounts for possible
inversion).
extmod/machine_signal: Implement Signal .on() and .off() methods.2017-02-08T08:14:23+00:00Paul Sokolovskypfalcon@users.sourceforge.net2017-02-08T08:14:23+00:00urn:sha1:181f7d145002731e5baec0f2c43ac57818447f8b
Each method asserts and deasserts signal respectively. They are equivalent
to .value(1) and .value(0) but conceptually simpler (and may help to avoid
confusion with inverted signals, where "asserted" state means logical 0
output).
extmod/machine_signal: Implement "signal" abstraction for machine module.2017-01-29T15:57:36+00:00Paul Sokolovskypfalcon@users.sourceforge.net2017-01-01T16:09:25+00:00urn:sha1:7a7516d40ddc00b051dd8dcf8ab38b5f845dcec4
A signal is like a pin, but ca also be inverted (active low). As such, it
abstracts properties of various physical devices, like LEDs, buttons,
relays, buzzers, etc. To instantiate a Signal:
pin = machine.Pin(...)
signal = machine.Signal(pin, inverted=True)
signal has the same .value() and __call__() methods as a pin.