pwm.h

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/*
 * SPDX-FileCopyrightText: 2014-2015 Freie Universität Berlin
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#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,           
    PWM_RIGHT,          
    PWM_CENTER          
} 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