pwm.h

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#ifndef PWM_H_
#define PWM_H_

/* All periods are in 8962 clock cycles
 *  The short period should always look continuous and varying the duty cycle changes the perceived
 *  brightness of one of the RGB LEDs. The long period should result in a visible on/off when
 *  the duty cycle is varied and enable the light to blink.
 *  The super short period is for controlling the power of the IR beacons.
 *  Note that the PWM generator counter is 16 bits.
 */


//#define PERIOD_IRBEACON TODO Need actual number for this. Talk to professor, use math.
#define IR_FREQUENCY                    38000
#define IR_PWM_LEVEL                    31
#define PWM_FREQUENCY                   (SYSCTL_CLOCK_FREQ / IR_FREQUENCY * IR_PWM_LEVEL)


void pwmInitializeLed(void);


void pwmInitializeBeacon(void);

void pwmSetDuty (uint32 pwm_target, uint16 duty);


void pwmSetDutyAllLeds(uint16 duty);


void pwmEnableSingle (uint32 pin_name);


void pwmEnableAllLeds(void);


void pwmDisableSingle(uint32 pin_name);


void pwmDisableAllLeds(void);

#endif /* PWM_H_ */