4. An array named as 'duty cycles' includes the duty cycles to be applied to a PWM signal generated using PORTD15. Write the code that reads the duty cycle values from the 'duty_cycles array' and applies these duty cycle values to the PWM signal in each 10 msecs. (PWM Signal must be generated by hardware). (25 pts) 4. An array named as 'duty cycles' includes the duty cycles to be applied to a PWM signal generated using PORTD15. Write the code that reads the duty cycle values from the 'duty_cycles array' and applies these duty cycle values to the PWM signal in each 10 msecs. (PWM Signal must be generated by hardware). (25 pts)