def start(self, pin, dutycycle, frequency_hz=2000):
        """Enable PWM output on specified pin.  Set to intiial percent duty cycle
        value (0.0 to 100.0) and frequency (in Hz).
        """
        if dutycycle < 0.0 or dutycycle > 100.0:
            raise ValueError('Invalid duty cycle value, must be between 0.0 to 100.0 (inclusive).')
        # Make pin an output.
        self.rpi_gpio.setup(pin, self.rpi_gpio.OUT)
        # Create PWM instance and save a reference for later access.
        self.pwm[pin] = self.rpi_gpio.PWM(pin, frequency_hz)
        # Start the PWM at the specified duty cycle.
        self.pwm[pin].start(dutycycle)
def start(self, pin, dutycycle, frequency_hz=2000):
        
        if dutycycle < 0.0 or dutycycle > 100.0:
            raise ValueError('Invalid duty cycle value, must be between 0.0 to 100.0 (inclusive).')
        
        self.rpi_gpio.setup(pin, self.rpi_gpio.OUT)
        
        self.pwm[pin] = self.rpi_gpio.PWM(pin, frequency_hz)
        
        self.pwm[pin].start(dutycycle)
def start ( self , pin , dutycycle , frequency_hz = 2000 ) : if dutycycle < 0.0 or dutycycle > 100.0 : raise ValueError ( 'Invalid duty cycle value, must be between 0.0 to 100.0 (inclusive).' ) # Make pin an output. self . rpi_gpio . setup ( pin , self . rpi_gpio . OUT ) # Create PWM instance and save a reference for later access. self . pwm [ pin ] = self . rpi_gpio . PWM ( pin , frequency_hz ) # Start the PWM at the specified duty cycle. self . pwm [ pin ] . start ( dutycycle )
Enable PWM output on specified pin.  Set to intiial percent duty cycle
        value (0.0 to 100.0) and frequency (in Hz).
Enable PWM output on specified pin . Set to intiial percent duty cycle value ( 0 . 0 to 100 . 0 ) and frequency ( in Hz ) .