Name
enum pwm_polarity — 
  polarity of a PWM signal
 
Synopsis
enum pwm_polarity {
  PWM_POLARITY_NORMAL,
  PWM_POLARITY_INVERSED
};  Constants
- PWM_POLARITY_NORMAL
- 
a high signal for the duration of the duty-
cycle, followed by a low signal for the remainder of the pulse
period
       
- PWM_POLARITY_INVERSED
- 
a low signal for the duration of the duty-
cycle, followed by a high signal for the remainder of the pulse
period