/**
 * @file dev_pwm.c
 * @author your name (you@domain.com)
 * @brief 
 * @version 0.1
 * @date 2023-04-05
 * 
 * @copyright Copyright (c) 2023
 * 
 */

#include <string.h>
#include "dev_pwm.h"
#include "ems_assert.h"

#ifdef __cplusplus
extern "C" {
#endif

EMS_TAG("EMS_PWM")

/* private variables -------------------------------------------------------- */
static ems_ops_t _obj_ops =
{
    .open = NULL,
    .close = NULL,
    .read = NULL,
    .write = NULL,
};

/**
 * @brief 
 * 
 * @param me 
 * @param name 
 * @param ops 
 * @param user_data 
 */
void ems_pwm_register(ems_pwm_t * const me,
                        const char *name,
                        const ems_pwm_ops_t *ops,
                        void *user_data)
{
    ems_assert(me != NULL);
    ems_assert(name != NULL);
    ems_assert(ops != NULL);

    ems_obj_attr_t attr =
    {
        .user_data = user_data,
        .standlone = true,
        .type = EMS_OBJ_PWM,
    };

    ems_register(&me->super, name, &_obj_ops, &attr);

    me->ops = ops;
    me->duty_ratio = 0;
    me->ops->init(me);
}

/**
 * @brief 
 * 
 * @param me 
 * @param duty_ratio 
 */
void ems_pwm_set_duty(ems_object_t * const me, uint8_t duty_ratio)
{
    ems_assert(me != NULL);
    ems_assert(duty_ratio <= 100);
    ems_assert(me->attr.type == EMS_OBJ_PWM);
    
    ems_pwm_t *pwm = (ems_pwm_t *)me;
    if (duty_ratio != pwm->duty_ratio)
    {
        pwm->ops->set_duty(pwm, duty_ratio);
        pwm->duty_ratio = duty_ratio;
    }
}

#ifdef __cplusplus
}
#endif