Created
October 25, 2020 00:43
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RGB diskovalo GPIO liitäntään.
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import RPi.GPIO as GPIO | |
import time | |
from math import (sin, pi) | |
from psutil import cpu_percent | |
import logging | |
logger = logging.getLogger(__name__) | |
GPIO.setwarnings(False) | |
red_gpio = 26 | |
green_gpio = 19 | |
blue_gpio = 13 | |
# Kirkkaus 0-1. | |
#brightness = lambda: cpu_percent() / 100 | |
brightness = 0.1 | |
fps = 1/30 | |
def main(red_gpio, green_gpio, blue_gpio, freq=100): | |
GPIO.setmode(GPIO.BCM) | |
GPIO.setup(red_gpio, GPIO.OUT) | |
GPIO.setup(green_gpio, GPIO.OUT) | |
GPIO.setup(blue_gpio, GPIO.OUT) | |
logger.debug("PINS (RGB):", red_gpio, green_gpio, blue_gpio) | |
RED = GPIO.PWM(red_gpio, freq) | |
GREEN = GPIO.PWM(green_gpio, freq) | |
BLUE = GPIO.PWM(blue_gpio, freq) | |
offset_step = pi*2/3 | |
def get_intensity(offset): | |
_brightness = brightness() if callable(brightness) else brightness | |
intensity = sin(seed+(offset_step*offset)) | |
if 0 < intensity < 1: | |
return min (100, max(0, (100 * intensity) * _brightness)) | |
else: | |
return 0 | |
try: | |
RED.start(0) | |
GREEN.start(0) | |
BLUE.start(0) | |
while True: | |
seed = time.time() | |
RED.ChangeDutyCycle(get_intensity(1)) | |
GREEN.ChangeDutyCycle(get_intensity(2)) | |
BLUE.ChangeDutyCycle(get_intensity(3)) | |
time.sleep(fps) | |
except Exception as e: | |
RED.stop() | |
GREEN.stop() | |
BLUE.stop() | |
GPIO.cleanup() | |
raise e | |
if __name__ == "__main__": | |
main(red_gpio=red_gpio, green_gpio=green_gpio, blue_gpio=blue_gpio) | |
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