/******************************************************************************
 * The MIT License
 *
 * Copyright (c) 2010 Perry Hung.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *****************************************************************************/

/**
 *  @file pwm.h
 *
 *  @brief Arduino-compatible PWM interface.
 */

#ifndef _PWM_H_
#define _PWM_H_

/**
 * As a convenience, analogWrite is an alias of pwmWrite to ease
 * porting Arduino code.  However, period and duty will have to be
 * recalibrated.
 */
#define analogWrite pwmWrite

/**
 * Set the PWM duty on the given pin.
 *
 * User code is expected to determine and honor the maximum value
 * (based on the configured period).
 *
 * @param pin PWM output pin
 * @param duty_cycle Duty cycle to set.
 */
void pwmWrite(uint8 pin, uint16 duty_cycle);

#endif

