pwm.h

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/*
 * Copyright (C) 2014-2015 Freie Universität Berlin
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#ifndef PERIPH_PWM_H
#define PERIPH_PWM_H
 
#include <stdint.h>
#include <limits.h>
 
#include "periph_cpu.h"
#include "periph_conf.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#ifndef PWM_DEV
#define PWM_DEV(x)          (x)
#endif
 
#ifndef PWM_UNDEF
#define PWM_UNDEF           (UINT_FAST8_MAX)
#endif
 
#ifndef HAVE_PWM_T
typedef uint_fast8_t pwm_t;
#endif
 
#ifndef HAVE_PWM_MODE_T
typedef enum {
    PWM_LEFT,           /*< use left aligned PWM */
    PWM_RIGHT,          /*< use right aligned PWM */
    PWM_CENTER          /*< use center aligned PWM */
} pwm_mode_t;
#endif
 
#ifdef MODULE_ARDUINO
typedef struct {
    pwm_t dev;          
    uint8_t chan;       
    uint8_t pin;        
} arduino_pwm_t;
#endif
 
uint32_t pwm_init(pwm_t dev, pwm_mode_t mode, uint32_t freq, uint16_t res);
 
uint8_t pwm_channels(pwm_t dev);
 
void pwm_set(pwm_t dev, uint8_t channel, uint16_t value);
 
void pwm_poweron(pwm_t dev);
 
void pwm_poweroff(pwm_t dev);
 
#ifdef __cplusplus
}
#endif
 
#endif /* PERIPH_PWM_H */