54 lines
1005 B
Python
54 lines
1005 B
Python
import RPi.GPIO as GPIO
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import time
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GPIO.setmode(GPIO.BCM)
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RUNNING = True
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# PINs
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red = 20
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green = 21
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blue = 22
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# frequency for PWM
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freq = 50
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GPIO.setup(red, GPIO.OUT)
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GPIO.setup(green, GPIO.OUT)
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GPIO.setup(blue, GPIO.OUT)
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# defining the pins that are going to be used with PWM
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RED = GPIO.PWM(red, freq)
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GREEN = GPIO.PWM(green, freq)
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BLUE = GPIO.PWM(blue, freq)
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colors = [RED,GREEN,BLUE]
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try:
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while RUNNING:
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RED.start(100)
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GREEN.start(1)
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BLUE.start(1)
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for x in range(3):
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full = colors[x]
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up = colors[(x+1)%3]
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zero = colors[(x+2)%3]
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full.ChangeDutyCycle(100)
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zero.ChangeDutyCycle(1)
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# Keep one color at 100%, let another raise from 1% to 100% and leave the third at 1%
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for y in range(1,101):
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up.ChangeDutyCycle(y)
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time.sleep(0.01)
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# Now keep the raised color at 100% and dim the original full color down to 1%
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for y in range(1,101):
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full.ChangeDutyCycle(100-y)
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time.sleep(0.01)
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except KeyboardInterrupt:
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RUNNING = False
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GPIO.cleanup()
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