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/**
* @file
*
* @ingroup lpc176x
*
* @brief PWM-Out controller for the mbed lpc1768 board.
*/
/*
* Copyright (c) 2014 Taller Technologies.
*
* @author Diaz Marcos (marcos.diaz@tallertechnologies.com)
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef LPC176X_PWMOUT_H
#define LPC176X_PWMOUT_H
#include <bsp.h>
#include <bsp/io.h>
#include <bsp/lpc176x.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @brief Initializes the PWM output device and sets an initial period
* of 20000us.
*
* @param pin_number The PWM output pin.
* @return RTEMS_SUCCESSFULL if the PWM initialization was OK,
* RTEMS_INVALID_NUMBER for a wrong parameter.
*/
rtems_status_code pwm_init( const lpc176x_pin_number pin_number );
/**
* @brief Sets a period for the PWM output. (Note that this changes the period
* for all the PWM outputs.)
*
* @param pin_number The pin whose period we want to change.
* @param period The desired period in microseconds.
*
* @return RTEMS_SUCCESSFULL if the period's setting was OK,
* RTEMS_INVALID_NUMBER for a bad parameter.
*/
rtems_status_code pwm_period(
const lpc176x_pin_number pin_number,
const lpc176x_microseconds period
);
/**
* @brief Sets a pulsewidth for the PWM output.
*
* @param pin_number The pin whose pulsewidth we want to change.
* @param pwidth The desired pulsewidth in microseconds.
*
* @return RTEMS_SUCCESSFULL if the pulsewidth's setting was OK,
* RTEMS_INVALID_NUMBER for a wrong parameter.
*/
rtems_status_code pwm_pulsewidth(
const lpc176x_pin_number pin_number,
const lpc176x_microseconds pwidth
);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif
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