37 lines
787 B
Python
37 lines
787 B
Python
|
import sys, getopt
|
||
|
|
import RPi.GPIO as GPIO
|
||
|
|
import time
|
||
|
|
import threading
|
||
|
|
|
||
|
|
ledPin = 5
|
||
|
|
|
||
|
|
def setup():
|
||
|
|
global pwm
|
||
|
|
GPIO.setmode(GPIO.BOARD)
|
||
|
|
GPIO.setup(ledPin, GPIO.OUT)
|
||
|
|
GPIO.output(ledPin, GPIO.LOW)
|
||
|
|
pwm = GPIO.PWM(ledPin, 1000) # Set Frequency to 1 KHz
|
||
|
|
pwm.start(0) # Set the starting Duty Cycle
|
||
|
|
|
||
|
|
def loop():
|
||
|
|
while True:
|
||
|
|
for dc in range(0, 101, 1):
|
||
|
|
pwm.ChangeDutyCycle(dc)
|
||
|
|
time.sleep(0.01)
|
||
|
|
time.sleep(1)
|
||
|
|
for dc in range(100, -1, -1):
|
||
|
|
pwm.ChangeDutyCycle(dc)
|
||
|
|
time.sleep(0.01)
|
||
|
|
time.sleep(1)
|
||
|
|
|
||
|
|
def destroy():
|
||
|
|
pwm.stop()
|
||
|
|
GPIO.output(ledPin, GPIO.LOW)
|
||
|
|
GPIO.cleanup()
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
setup()
|
||
|
|
try:
|
||
|
|
loop()
|
||
|
|
except KeyboardInterrupt:
|
||
|
|
destroy()
|