149 lines
5.9 KiB
Python
149 lines
5.9 KiB
Python
# -*-coding: utf-8 -*-
|
|
import time
|
|
from rpi_ws281x import *
|
|
# LED strip configuration:
|
|
LED_COUNT = 8 # Number of LED pixels.
|
|
LED_PIN = 18 # GPIO pin connected to the pixels (18 uses 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 # set to '1' for GPIOs 13, 19, 41, 45 or 53
|
|
# Define functions which animate LEDs in various ways.
|
|
class Led:
|
|
def __init__(self):
|
|
#Control the sending order of color data
|
|
self.ORDER = "GRB"
|
|
# Create NeoPixel object with appropriate configuration.
|
|
self.strip = Adafruit_NeoPixel(LED_COUNT, LED_PIN, LED_FREQ_HZ, LED_DMA, LED_INVERT, LED_BRIGHTNESS, LED_CHANNEL)
|
|
# Intialize the library (must be called once before other functions).
|
|
self.strip.begin()
|
|
def LED_TYPR(self,order,R_G_B):
|
|
B=R_G_B & 255
|
|
G=R_G_B >> 8 & 255
|
|
R=R_G_B >> 16 & 255
|
|
Led_type=["GRB","GBR","RGB", "RBG","BRG","BGR"]
|
|
color = [Color(G,R,B),Color(G,B,R),Color(R,G,B),Color(R,B,G),Color(B,R,G),Color(B,G,R)]
|
|
if order in Led_type:
|
|
return color[Led_type.index(order)]
|
|
def colorWipe(self,strip, color, wait_ms=50):
|
|
"""Wipe color across display a pixel at a time."""
|
|
color=self.LED_TYPR(self.ORDER,color)
|
|
for i in range(self.strip.numPixels()):
|
|
self.strip.setPixelColor(i, color)
|
|
self.strip.show()
|
|
time.sleep(wait_ms/1000.0)
|
|
|
|
def theaterChase(self,strip, color, wait_ms=50, iterations=10):
|
|
"""Movie theater light style chaser animation."""
|
|
color=self.LED_TYPR(self.ORDER,color)
|
|
for j in range(iterations):
|
|
for q in range(3):
|
|
for i in range(0,self.strip.numPixels(), 3):
|
|
self.strip.setPixelColor(i+q, color)
|
|
self.strip.show()
|
|
time.sleep(wait_ms/1000.0)
|
|
for i in range(0, self.strip.numPixels(), 3):
|
|
self.strip.setPixelColor(i+q, 0)
|
|
|
|
def wheel(self,pos):
|
|
"""Generate rainbow colors across 0-255 positions."""
|
|
if pos<0 or pos >255:
|
|
r=g=b=0
|
|
elif pos < 85:
|
|
r=pos * 3
|
|
g=255 - pos * 3
|
|
b=0
|
|
elif pos < 170:
|
|
pos -= 85
|
|
r=255 - pos * 3
|
|
g=0
|
|
b=pos * 3
|
|
else:
|
|
pos -= 170
|
|
r=0
|
|
g=pos * 3
|
|
b=255 - pos * 3
|
|
return self.LED_TYPR(self.ORDER,Color(r,g,b))
|
|
|
|
def rainbow(self,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(self.strip.numPixels()):
|
|
self.strip.setPixelColor(i, self.wheel((i+j) & 255))
|
|
self.strip.show()
|
|
time.sleep(wait_ms/1000.0)
|
|
|
|
def rainbowCycle(self,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(self.strip.numPixels()):
|
|
self.strip.setPixelColor(i, self.wheel((int(i * 256 / self.strip.numPixels()) + j) & 255))
|
|
self.strip.show()
|
|
time.sleep(wait_ms/1000.0)
|
|
|
|
def theaterChaseRainbow(self,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, self.strip.numPixels(), 3):
|
|
self.strip.setPixelColor(i+q, self.wheel((i+j) % 255))
|
|
self.strip.show()
|
|
time.sleep(wait_ms/1000.0)
|
|
for i in range(0, strip.numPixels(), 3):
|
|
strip.setPixelColor(i+q, 0)
|
|
def ledIndex(self,index,R,G,B):
|
|
color=self.LED_TYPR(self.ORDER,Color(R,G,B))
|
|
for i in range(8):
|
|
if index & 0x01 == 1:
|
|
self.strip.setPixelColor(i,color)
|
|
self.strip.show()
|
|
index=index >> 1
|
|
def ledMode(self,n):
|
|
self.mode=n
|
|
while True:
|
|
if self.mode=='1':
|
|
self.colorWipe(self.strip, Color(255, 0, 0)) # Red wipe
|
|
self.colorWipe(self.strip, Color(0, 255, 0)) # Green wipe
|
|
self.colorWipe(self.strip, Color(0, 0, 255)) # Blue wipe
|
|
self.colorWipe(self.strip, Color(0,0,0),10)
|
|
elif self.mode=='2':
|
|
self.theaterChaseRainbow(self.strip)
|
|
self.colorWipe(self.strip, Color(0,0,0),10)
|
|
elif self.mode=='3':
|
|
self.rainbow(self.strip)
|
|
self.colorWipe(self.strip, Color(0,0,0),10)
|
|
elif self.mode=='4':
|
|
self.rainbowCycle(self.strip)
|
|
self.colorWipe(self.strip, Color(0,0,0),10)
|
|
else:
|
|
self.colorWipe(self.strip, Color(0,0,0),10)
|
|
break
|
|
led=Led()
|
|
# Main program logic follows:
|
|
if __name__ == '__main__':
|
|
print ('Program is starting ... ')
|
|
try:
|
|
while True:
|
|
print ("Chaser animation")
|
|
led.colorWipe(led.strip, Color(255,0, 0)) # Red wipe
|
|
led.colorWipe(led.strip, Color(0, 255, 0)) # Green wipe
|
|
led.colorWipe(led.strip, Color(0, 0, 255)) # Blue wipe
|
|
led.theaterChaseRainbow(led.strip)
|
|
print ("Rainbow animation")
|
|
led.rainbow(led.strip)
|
|
led.rainbowCycle(led.strip)
|
|
led.colorWipe(led.strip, Color(0,0,0),10)
|
|
except KeyboardInterrupt: # When 'Ctrl+C' is pressed, the child program destroy() will be executed.
|
|
led.colorWipe(led.strip, Color(0,0,0),10)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|