def main(): """ Main program function """ # create an instance of the PWM class on i2c address 0x40 pwm = PWM(0x40) # Set PWM frequency to 1 Khz and enable the output pwm.set_pwm_freq(1000) pwm.output_enable() while True: for count in range(1, 4095, 5): pwm.set_pwm(1, 0, count) for count in range(4095, 1, -5): pwm.set_pwm(1, 0, count)
def main(): """ Main program function """ # create an instance of the PWM class on i2c address 0x40 pwm = PWM(0x40) # Set PWM frequency to 1 Khz and enable the output pwm.set_pwm_freq(1000) pwm.output_enable() while True: for count in range(1, 4095, 5): pwm.set_pwm(1, 0, count) for count in range(4095, 1, -5): pwm.set_pwm(1, 0, count)
class servoDriver(object): servoFrequencyValue = 50 PWMFrequencyValue = 200 def __init__(self): #creating objects for the PWM and Motor self.pwm = pulseWidthModulation() self.ServoMotor = motor() def pulseWidthModulation(self): #Pulse Width Modulation(PWM) instatiation self.pwm = PWM(0x40) #Sets the PWM to a frequency of 200 Hz self.pwm.set_pwm_freq(self.PWMFrequencyValue) #Allow the output to be displayed self.pwm.output_enable() #Setting the channel for data stream to 1, time period to 1024 out of 4095. self.pwm.set_pwm(1, 0, 1024) def motor(self): #Instantiation of the servo object self.servo = Servo(0x40) #setting frequency for the PWM to interact with the PWM object self.servo.set_frequency(self.frequencyValuse) #setting the servo to move self.servo.move(1, 125, 250) def set_PWM_frequency(self, value): self.PWMFrequencyValue = value self.pwm.set_pwm_freq(self.PWMFrequencyValue) def get_PWM_frequency(self): return self.PWMFrequencyValue def set_servo_frequency(self, value): self.servoFrequencyValue = value self.servo.set_frequency(self.servoFrequencyValue) def get_servo_frequency(self): return self.servoFrequencyValue