/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation. See the file COPYING
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * Copyright (C) 2010 Frank van Maarseveen <frankvm@frankvm.com>
 */

#ifndef _PWM1_H_
#define _PWM1_H_

#include "hardware.h"

void		pwm1_init(void);
void		pwm1_cleanup(void);

/*
 * Read or write the duty cycle. Zero makes the output permanently low.
 * A too high value (especially 255) will blow up the electronics: keep
 * it below PWM1_MAX.
 */
__attribute__((always_inline))
static inline uint8_t pwm1_read(void)
{
	return OCR1A;
}

__attribute__((always_inline))
static inline void pwm1_write(uint8_t dc)
{
#ifdef PWM1_MIN
	if (dc < PWM1_MIN)
		dc = PWM1_MIN;
#endif
#ifdef PWM1_MAX
	if (dc > PWM1_MAX)
		dc = PWM1_MAX;
#endif
	OCR1A = dc;
}

#endif