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examples/softpwm.py

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+# Pulsates an LED connected to GPIO pin 1 with a suitable resistor 4 times using softPwm
+# softPwm uses a fixed frequency
+import wiringpi
+
+OUTPUT = 1
+
+PIN_TO_PWM = 1
+
+wiringpi.wiringPiSetup()
+wiringpi.pinMode(PIN_TO_PWM,OUTPUT)
+wiringpi.softPwmCreate(PIN_TO_PWM,0,100) # Setup PWM using Pin, Initial Value and Range parameters
+
+for time in range(0,4):
+	for brightness in range(0,100): # Going from 0 to 100 will give us full off to full on
+		wiringpi.softPwmWrite(PIN_TO_PWM,brightness) # Change PWM duty cycle
+		wiringpi.delay(10) # Delay for 0.2 seconds
+	for brightness in reversed(range(0,100)):
+		wiringpi.softPwmWrite(PIN_TO_PWM,brightness)
+		wiringpi.delay(10)