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pixelDriver.py
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# NeoPixel library strandtest example
# Author: Tony DiCola ([email protected])
#
# Direct port of the Arduino NeoPixel library strandtest example. Showcases
# various animations on a strip of NeoPixels.
import time
import state
from neopixel import *
# Check for user imports
try:
import conflocal as config
except ImportError:
import config
# LED strip configuration:
LED_COUNT = 8 # Number of LED pixels.
LED_PIN = config.pixelPin # GPIO pin connected to the pixels (must support PWM!).
LED_FREQ_HZ = 800000 # LED signal frequency in hertz (usually 800khz)
LED_DMA = 10 # DMA channel to use for generating signal (try 10)
LED_BRIGHTNESS = 255 # Set to 0 for darkest and 255 for brightest
LED_INVERT = False # True to invert the signal (when using NPN transistor level shift)
LED_CHANNEL = 0
LED_STRIP = ws.SK6812_STRIP_RGBW
#LED_STRIP = ws.SK6812W_STRIP
# Define functions which animate LEDs in various ways.
def colorWipe(strip, color, wait_ms=50):
"""Wipe color across display a pixel at a time."""
for i in range(strip.numPixels()):
strip.setPixelColor(i, color)
strip.show()
time.sleep(wait_ms/1000.0)
def theaterChase(strip, color, wait_ms=50, iterations=10):
"""Movie theater light style chaser animation."""
for j in range(iterations):
for q in range(3):
for i in range(0, strip.numPixels(), 3):
strip.setPixelColor(i+q, color)
strip.show()
time.sleep(wait_ms/1000.0)
for i in range(0, strip.numPixels(), 3):
strip.setPixelColor(i+q, 0)
def wheel(pos):
"""Generate rainbow colors across 0-255 positions."""
if pos < 85:
return Color(pos * 3, 255 - pos * 3, 0)
elif pos < 170:
pos -= 85
return Color(255 - pos * 3, 0, pos * 3)
else:
pos -= 170
return Color(0, pos * 3, 255 - pos * 3)
def rainbow(strip, wait_ms=20, iterations=1):
"""Draw rainbow that fades across all pixels at once."""
for j in range(256*iterations):
for i in range(strip.numPixels()):
strip.setPixelColor(i, wheel((i+j) & 255))
strip.show()
time.sleep(wait_ms/1000.0)
def rainbowCycle(strip, wait_ms=20, iterations=5):
"""Draw rainbow that uniformly distributes itself across all pixels."""
for j in range(256*iterations):
for i in range(strip.numPixels()):
strip.setPixelColor(i, wheel(((i * 256 / strip.numPixels()) + j) & 255))
strip.show()
time.sleep(wait_ms/1000.0)
def theaterChaseRainbow(strip, wait_ms=50):
"""Rainbow movie theater light style chaser animation."""
for j in range(256):
for q in range(3):
for i in range(0, strip.numPixels(), 3):
strip.setPixelColor(i+q, wheel((i+j) % 255))
strip.show()
time.sleep(wait_ms/1000.0)
for i in range(0, strip.numPixels(), 3):
strip.setPixelColor(i+q, 0)
def statusLEDs(strip, PixelLock):
PixelLock.acquire()
if (state.runLEDs == True):
while (state.runRainbow == True):
if (config.DEBUG):
print "rainbow start"
rainbow(strip)
#rainbowCycle(strip)
#theaterChaseRainbow(strip)
if (config.DEBUG):
print "rainbow end"
for i in range(1,8):
strip.setPixelColor(i,Color(0,0,0))
time.sleep(0.2)
strip.show()
setDryness(strip, PixelLock)
time.sleep(2.0)
for i in range(1,8):
strip.setPixelColor(i,Color(0,0,0))
time.sleep(0.2)
strip.show()
setWaterLevel(strip, PixelLock)
time.sleep(2.0)
else:
strip.setPixelColor(7,Color(0,0,0))
strip.setPixelColor(6,Color(0,0,0))
strip.setPixelColor(5,Color(0,0,0))
strip.setPixelColor(4,Color(0,0,0))
strip.setPixelColor(3,Color(0,0,0))
strip.setPixelColor(2,Color(0,0,0))
strip.setPixelColor(1,Color(0,0,0))
strip.setPixelColor(0,Color(0,0,0))
strip.show()
PixelLock.release()
def setDryness(strip, PixelLock):
""" uses 7 top pixels """
# 0 - 1/2 of set level- bottom two - RED
# 1/2 - set level middle three - YELLOW
# set equal above set level top = Green
if (state.Moisture_Humidity > state.Moisture_Threshold):
strip.setPixelColor(7,Color(255,0,0))
strip.setPixelColor(6,Color(100,255,0))
strip.setPixelColor(5,Color(100,255,0))
strip.setPixelColor(4,Color(100,255,0))
strip.setPixelColor(3,Color(0,255,0))
strip.setPixelColor(2,Color(0,255,0))
strip.setPixelColor(1,Color(0,255,0))
else:
if (state.Moisture_Humidity > state.Moisture_Threshold/2.0):
count = int(( state.Moisture_Humidity-state.Moisture_Threshold/2.0)/(3.0*state.Moisture_Threshold/2.0)) +1
strip.setPixelColor(7,Color(0,0,0))
if (count >2):
strip.setPixelColor(6,Color(100,255,0))
else:
strip.setPixelColor(6,Color(0,0,0))
if (count >1):
strip.setPixelColor(5,Color(100,255,0))
else:
strip.setPixelColor(5,Color(0,0,0))
if (count >0):
strip.setPixelColor(4,Color(100,255,0))
else:
strip.setPixelColor(4,Color(0,0,0))
strip.setPixelColor(3,Color(0,255,0))
strip.setPixelColor(2,Color(0,255,0))
strip.setPixelColor(1,Color(0,255,0))
else:
strip.setPixelColor(7,Color(0,0,0))
strip.setPixelColor(6,Color(0,0,0))
strip.setPixelColor(5,Color(0,0,0))
strip.setPixelColor(4,Color(0,0,0))
count = int(( state.Moisture_Humidity)/((state.Moisture_Threshold/2.0)/3.0)) +1
if (count >2):
strip.setPixelColor(3,Color(0,255,0))
else:
strip.setPixelColor(3,Color(0,0,0))
if (count >1):
strip.setPixelColor(2,Color(0,255,0))
else:
strip.setPixelColor(2,Color(0,0,0))
if (count >0):
strip.setPixelColor(1,Color(0,255,0))
else:
strip.setPixelColor(1,Color(0,0,0))
strip.show()
def setWaterLevel(strip, PixelLock):
""" uses 7 top pixels """
# all 7 green until under 1/7 of level, step by 1/7 - then all black except for 1 - RED
count = int (state.Tank_Percentage_Full/14.0)
for i in range(2,count+1):
strip.setPixelColor(i,Color(255,0,0))
strip.setPixelColor(1,Color(0,255,0))
strip.show()
"""
# Main program logic follows:
if __name__ == '__main__':
# Create NeoPixel object with appropriate configuration.
strip = Adafruit_NeoPixel(LED_COUNT, LED_PIN, LED_FREQ_HZ, LED_DMA, LED_INVERT, LED_BRIGHTNESS, LED_CHANNEL, LED_STRIP)
# Intialize the library (must be called once before other functions).
strip.begin()
print ('Press Ctrl-C to quit.')
/bin/bash: tx: command not found
# Color wipe animations.
colorWipe(strip, Color(255, 0, 0)) # Red wipe
colorWipe(strip, Color(0, 255, 0)) # Blue wipe
colorWipe(strip, Color(0, 0, 255)) # Green wipe
colorWipe(strip, Color(0, 0, 0, 255)) # White wipe
colorWipe(strip, Color(255, 255, 255)) # Composite White wipe
colorWipe(strip, Color(255, 255, 255, 255)) # Composite White + White LED wipe
# Theater chase animations.
theaterChase(strip, Color(127, 0, 0)) # Red theater chase
theaterChase(strip, Color(0, 127, 0)) # Green theater chase
theaterChase(strip, Color(0, 0, 127)) # Blue theater chase
theaterChase(strip, Color(0, 0, 0, 127)) # White theater chase
theaterChase(strip, Color(127, 127, 127, 0)) # Composite White theater chase
theaterChase(strip, Color(127, 127, 127, 127)) # Composite White + White theater chase
# Rainbow animations.
rainbow(strip)
rainbowCycle(strip)
theaterChaseRainbow(strip)
"""