def __del__(self): # Clean up memory used by the library when not needed anymore. if self._leds is not None: ws.ws2811_fini(self._leds) ws.delete_ws2811_t(self._leds) self._leds = None self._channel = None
def __del__(self):
# Clean up memory used by the library when not needed anymore.
if self._leds is not None:
ws.ws2811_fini(self._leds)
ws.delete_ws2811_t(self._leds)
self._leds = None
self._channel = None
def _cleanup(self):
# Clean up memory used by the library when not needed anymore.
if self._leds is not None:
print("Exiting cleanly")
ws.ws2811_fini(self._leds)
ws.delete_ws2811_t(self._leds)
self._leds = None
self._channel = None
def _cleanup(self):
# Clean up memory used by the library when not needed anymore.
if self._leds is not None:
print("Exiting cleanly")
ws.ws2811_fini(self._leds)
ws.delete_ws2811_t(self._leds)
self._leds = None
self._channel = None
def colorChange(color):
print(color)
# LED configuration.
LED_CHANNEL = 0
LED_COUNT = 16 # How many LEDs to light.
LED_FREQ_HZ = 800000 # Frequency of the LED signal. Should be 800khz or 400khz.
LED_DMA_NUM = 5 # DMA channel to use, can be 0-14.
LED_GPIO = 18 # GPIO connected to the LED signal line. Must support PWM!
LED_BRIGHTNESS = 255 # Set to 0 for darkest and 255 for brightest
LED_INVERT = 0 # Set to 1 to invert the LED signal, good if using NPN
# transistor as a 3.3V->5V level converter. Keep at 0
# for a normal/non-inverted signal.
leds = ws.new_ws2811_t()
# Initialize all channels to off
for channum in range(2):
channel = ws.ws2811_channel_get(leds, channum)
ws.ws2811_channel_t_count_set(channel, 0)
ws.ws2811_channel_t_gpionum_set(channel, 0)
ws.ws2811_channel_t_invert_set(channel, 0)
ws.ws2811_channel_t_brightness_set(channel, 0)
channel = ws.ws2811_channel_get(leds, LED_CHANNEL)
ws.ws2811_channel_t_count_set(channel, LED_COUNT)
ws.ws2811_channel_t_gpionum_set(channel, LED_GPIO)
ws.ws2811_channel_t_invert_set(channel, LED_INVERT)
ws.ws2811_channel_t_brightness_set(channel, LED_BRIGHTNESS)
ws.ws2811_t_freq_set(leds, LED_FREQ_HZ)
ws.ws2811_t_dmanum_set(leds, LED_DMA_NUM)
# Initialize library with LED configuration.
resp = ws.ws2811_init(leds)
if resp != 0:
raise RuntimeError('ws2811_init failed with code {0}'.format(resp))
try:
DOT_COLOR = int(color[1:7],16)
# Update each LED color in the buffer.
for i in range(LED_COUNT):
# Pick a color based on LED position and an offset for animation.
# Set the LED color buffer value.
ws.ws2811_led_set(channel, i, DOT_COLOR)
time.sleep(.15)
# Send the LED color data to the hardware.
resp = ws.ws2811_render(leds)
if resp != 0:
raise RuntimeError('ws2811_render failed with code {0}'.format(resp))
# Delay for a small period of time.
time.sleep(.25)
finally:
# Ensure ws2811_fini is called before the program quits.
ws.ws2811_fini(leds)
# Example of calling delete function to clean up structure memory. Isn't
# strictly necessary at the end of the program execution here, but is good practice.
ws.delete_ws2811_t(leds)
def _cleanup(self):
# Clean up memory used by the library when not needed anymore.
if self._leds is not None:
if self._init_successful:
ws.ws2811_fini(self._leds)
ws.delete_ws2811_t(self._leds)
self._leds = None
self._channel = None
def init(maxBrightness=10):
global LED_COUNT
global LED_BRIGHTNESS
global LED_GPIO
global CHANNEL
global LEDS
if (LEDS == False):
LEDS = ws.new_ws2811_t()
else:
# Ensure ws2811_fini is called before the program quits.
ws.ws2811_fini(LEDS)
# Example of calling delete function to clean up structure memory. Isn't
# strictly necessary at the end of the program execution here, but is good practice.
ws.delete_ws2811_t(LEDS)
LEDS = ws.new_ws2811_t()
SPLIT_LED_COUNT = [420, 402]
LED_COUNT = 420 + 402
LED_BRIGHTNESS = maxBrightness
LED_GPIO = [18, 13]
CHANNEL = []
LED_CHANNEL = [0, 1]
# Create a ws2811_t structure from the LED configuration.
# Note that this structure will be created on the heap so you need to be careful
# that you delete its memory by calling delete_ws2811_t when it's not needed.
# Initialize all channels to off
for channum in range(2):
channel = ws.ws2811_channel_get(LEDS, channum)
ws.ws2811_channel_t_count_set(channel, 0)
ws.ws2811_channel_t_gpionum_set(channel, 0)
ws.ws2811_channel_t_invert_set(channel, 0)
ws.ws2811_channel_t_brightness_set(channel, 0)
CHANNEL.append(ws.ws2811_channel_get(LEDS, channum))
ws.ws2811_channel_t_count_set(CHANNEL[channum],
SPLIT_LED_COUNT[channum])
ws.ws2811_channel_t_gpionum_set(CHANNEL[channum], LED_GPIO[channum])
ws.ws2811_channel_t_invert_set(CHANNEL[channum], LED_INVERT)
ws.ws2811_channel_t_brightness_set(CHANNEL[channum], LED_BRIGHTNESS)
ws.ws2811_channel_t_strip_type_set(CHANNEL[channum], LED_STRIP)
ws.ws2811_t_freq_set(LEDS, LED_FREQ_HZ)
ws.ws2811_t_dmanum_set(LEDS, LED_DMA_NUM)
# Initialize library with LED configuration.
resp = ws.ws2811_init(LEDS)
if resp != ws.WS2811_SUCCESS:
message = ws.ws2811_get_return_t_str(resp)
raise RuntimeError('ws2811_init failed with code {0} ({1})'.format(
resp, message))
fill({"R": 0, "G": 0, "B": 0})
render()
print('Initialized ✓')
def neopixel_cleanup():
global _led_strip
if _led_strip is not None:
# Ensure ws2811_fini is called before the program quits.
ws.ws2811_fini(_led_strip)
# Example of calling delete function to clean up structure memory. Isn't
# strictly necessary at the end of the program execution here, but is good practice.
ws.delete_ws2811_t(_led_strip)
_led_strip = None
def start(self, delegate, style):
print("Setting up LED environment...")
try:
self.LED_BRIGHTNESS = style['brightness'] or 64
self.LED_COUNT = style['led_count'] or 630
self.leds = ws.new_ws2811_t()
clean_up = style['cleanup'] == 1
# Initialize all channels to off
for channum in range(2):
self.channel = ws.ws2811_channel_get(self.leds, channum)
ws.ws2811_channel_t_count_set(self.channel, 0)
ws.ws2811_channel_t_gpionum_set(self.channel, 0)
ws.ws2811_channel_t_invert_set(self.channel, 0)
ws.ws2811_channel_t_brightness_set(self.channel, 0)
self.channel = ws.ws2811_channel_get(self.leds, self.LED_CHANNEL)
ws.ws2811_channel_t_count_set(self.channel, self.LED_COUNT)
ws.ws2811_channel_t_gpionum_set(self.channel, self.LED_GPIO)
ws.ws2811_channel_t_invert_set(self.channel, self.LED_INVERT)
ws.ws2811_channel_t_brightness_set(
self.channel, self.LED_BRIGHTNESS)
ws.ws2811_t_freq_set(self.leds, self.LED_FREQ_HZ)
ws.ws2811_t_dmanum_set(self.leds, self.LED_DMA_NUM)
# Initialize library with LED configuration.
resp = ws.ws2811_init(self.leds)
if resp != 0:
raise RuntimeError(
'ws2811_init failed with code {0}'.format(resp))
print(
"Starting {0} via {1}...".format(
style['style_name'], style['method_name'])
)
delegate(style)
finally:
if clean_up:
self.cleanup()
ws.ws2811_fini(self.leds)
ws.delete_ws2811_t(self.leds)
def start(self, delegate, style):
print("Setting up LED environment...")
try:
self.LED_BRIGHTNESS = style['brightness'] or 64
self.LED_COUNT = style['led_count'] or 630
self.leds = ws.new_ws2811_t()
clean_up = style['cleanup'] == 1
# Initialize all channels to off
for channum in range(2):
self.channel = ws.ws2811_channel_get(self.leds, channum)
ws.ws2811_channel_t_count_set(self.channel, 0)
ws.ws2811_channel_t_gpionum_set(self.channel, 0)
ws.ws2811_channel_t_invert_set(self.channel, 0)
ws.ws2811_channel_t_brightness_set(self.channel, 0)
self.channel = ws.ws2811_channel_get(self.leds, self.LED_CHANNEL)
ws.ws2811_channel_t_count_set(self.channel, self.LED_COUNT)
ws.ws2811_channel_t_gpionum_set(self.channel, self.LED_GPIO)
ws.ws2811_channel_t_invert_set(self.channel, self.LED_INVERT)
ws.ws2811_channel_t_brightness_set(self.channel,
self.LED_BRIGHTNESS)
ws.ws2811_t_freq_set(self.leds, self.LED_FREQ_HZ)
ws.ws2811_t_dmanum_set(self.leds, self.LED_DMA_NUM)
# Initialize library with LED configuration.
resp = ws.ws2811_init(self.leds)
if resp != 0:
raise RuntimeError(
'ws2811_init failed with code {0}'.format(resp))
print("Starting {0} via {1}...".format(style['style_name'],
style['method_name']))
delegate(style)
finally:
if clean_up:
self.cleanup()
ws.ws2811_fini(self.leds)
ws.delete_ws2811_t(self.leds)
def set_leds(self, status):
""" Set the color according to the humidity threshold
In the optimal state when no threshold is reached the
led is turned off.
@param status: An integer array with 4 integers between 0 and 4
@type status: int[4]
@return: None
"""
leds = ws.new_ws2811_t()
channel = ws.ws2811_channel_get(leds, self.get_channel())
ws.ws2811_channel_t_count_set(channel, self.get_count())
ws.ws2811_channel_t_gpionum_set(channel, self.get_gpio())
ws.ws2811_channel_t_invert_set(channel, self.get_invert())
ws.ws2811_channel_t_brightness_set(channel, self.get_brightness())
ws.ws2811_t_freq_set(leds, self.get_freq())
ws.ws2811_t_dmanum_set(leds, self.get_dma())
try:
resp = ws.ws2811_init(leds)
except Exception as err:
raise RuntimeError('ws2811_init failed with code {0} ({1}) {}', resp, err)
finally:
if resp != ws.WS2811_SUCCESS:
ws.ws2811_get_return_t_str(resp)
try:
for i in range(self.get_count()):
ws.ws2811_led_set(channel, i, self.get_color(status[i]))
resp = ws.ws2811_render(leds)
if resp != ws.WS2811_SUCCESS:
ws.ws2811_get_return_t_str(resp)
time.sleep(0.015)
except Exception as err:
raise RuntimeError('ws2811_render failed with code {0} ({1})'.format(resp, err))
finally:
logging.getLogger().info("LED status:\t\t\t{}".format(status))
ws.ws2811_fini(leds)
ws.delete_ws2811_t(leds)
try:
offset = 0
while True:
# Update each LED color in the buffer.
for i in range(LED_COUNT):
# Pick a color based on LED position and an offset for animation.
color = DOT_COLORS[(i + offset) % len(DOT_COLORS)]
# Set the LED color buffer value.
ws.ws2811_led_set(channel, i, color)
# Send the LED color data to the hardware.
resp = ws.ws2811_render(leds)
if resp != 0:
raise RuntimeError(
'ws2811_render failed with code {0}'.format(resp))
# Delay for a small period of time.
time.sleep(0.25)
# Increase offset to animate colors moving. Will eventually overflow, which
# is fine.
offset += 1
finally:
# Ensure ws2811_fini is called before the program quits.
ws.ws2811_fini(leds)
# Example of calling delete function to clean up structure memory. Isn't
# strictly necessary at the end of the program execution here, but is good practice.
ws.delete_ws2811_t(leds)
# Wrap following code in a try/finally to ensure cleanup functions are called
# after library is initialized.
try:
# Set LED data array on the ws2811_t structure. Be sure to do this AFTER the
# init function is called as it clears out the LEDs.
ws.ws2811_t_leds_set(leds, led_data)
# Loop forever or until ctrl-c is pressed.
offset = 0
while True:
# Update each LED color in the buffer.
for i in range(LED_COUNT):
# Pick a color based on LED position and an offset for animation.
color = DOT_COLORS[(i + offset) % len(DOT_COLORS)]
# Set the LED color buffer value.
ws.led_data_setitem(led_data, i, color)
# Send the LED color data to the hardware.
resp = ws.ws2811_render(leds)
if resp != 0:
raise RuntimeError('ws2811_render failed with code {0}'.format(resp))
# Delay for a small period of time.
time.sleep(0.25)
# Increase offset to animate colors moving. Will eventually overflow, which
# is fine.
offset += 1
finally:
# Ensure ws2811_fini is called before the program quits.
ws.ws2811_fini(leds)
# Example of calling delete function to clean up structure memory. Isn't
# strictly necessary at the end of the program execution here, but is good practice.
ws.delete_ws2811_t(leds)
def ws2811_fini(*args):
return _rpi_ws281x.ws2811_fini(*args)
def stop(self):
self.colorwipe()
self.render()
ws.ws2811_fini(self.leds)
ws.delete_ws2811_t(self.leds)
def ws2811_fini(ws2811):
return _rpi_ws281x.ws2811_fini(ws2811)
def shutdown(leds):
ws.ws2811_fini(leds)
ws.delete_ws2811_t(leds)
def ws2811_fini(*args): return _rpi_ws281x.ws2811_fini(*args)