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Merge pull request #312 from lurch/rgbled_pulse

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Add RGBLED.pulse method
This commit is contained in:
Dave Jones
2016-05-08 11:53:14 +01:00
parent 4ff0f3f043 18bb3f559e
commit 1575863ba5
3 changed files with 239 additions and 7 deletions
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44
gpiozero/output_devices.py
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@@ -435,12 +435,12 @@ class PWMOutputDevice(OutputDevice):
Number of seconds to spend fading out. Defaults to 1.
:param int n:
Number of times to blink; ``None`` (the default) means forever.
Number of times to pulse; ``None`` (the default) means forever.
:param bool background:
If ``True`` (the default), start a background thread to continue
blinking and return immediately. If ``False``, only return when the
blink is finished (warning: the default value of *n* will result in
pulsing and return immediately. If ``False``, only return when the
pulse is finished (warning: the default value of *n* will result in
this method never returning).
"""
on_time = off_time = 0
@@ -670,13 +670,49 @@ class RGBLED(SourceMixin, Device):
self._stop_blink()
self._blink_thread = GPIOThread(
target=self._blink_device,
args=(on_time, off_time, fade_in_time, fade_out_time, on_color, off_color, n)
args=(
on_time, off_time, fade_in_time, fade_out_time,
on_color, off_color, n
)
)
self._blink_thread.start()
if not background:
self._blink_thread.join()
self._blink_thread = None
def pulse(
self, fade_in_time=1, fade_out_time=1,
on_color=(1, 1, 1), off_color=(0, 0, 0), n=None, background=True):
"""
Make the device fade in and out repeatedly.
:param float fade_in_time:
Number of seconds to spend fading in. Defaults to 1.
:param float fade_out_time:
Number of seconds to spend fading out. Defaults to 1.
:param tuple on_color:
The color to use when the LED is "on". Defaults to white.
:param tuple off_color:
The color to use when the LED is "off". Defaults to black.
:param int n:
Number of times to pulse; ``None`` (the default) means forever.
:param bool background:
If ``True`` (the default), start a background thread to continue
pulsing and return immediately. If ``False``, only return when the
pulse is finished (warning: the default value of *n* will result in
this method never returning).
"""
on_time = off_time = 0
self.blink(
on_time, off_time, fade_in_time, fade_out_time,
on_color, off_color, n, background
)
def _stop_blink(self, led=None):
# If this is called with a single led, we stop all blinking anyway
if self._blink_thread: