v811_spc009/vendor/huanglong/uapi/pwm/include/uapi_pwm.h

/*
 * Copyright (c) Hisilicon Technologies Co., Ltd. 2012-2019. All rights reserved.
 * Description:  supply the api for userspace application
 */
#ifndef UAPI_PWM_H
#define UAPI_PWM_H

#include "td_type.h"

#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif

/* Define the PWM attributes */
/* CNcomment: 定义PWM属性结构体 */
typedef struct {
    /* < Frequency(HZ) */ /* < CNcomment: 频率, 单位HZ */
    td_u32 pwm_frequency;
    /* < Duty ratio(calculated to three decimal places) */ /* * <CNcomment: 占空比，保留小数点后三位 */
    td_u32 pwm_duty_ratio;
} uapi_pwm_attr;

/*
 * \brief Initializes the PWM module.CNcomment:初始化PWM模块 CNend
 * \attention \n
 * Before calling anyother interface, you must call this application programming interface (API) first.
 * CNcomment 在调用PWM模块其他接口前，要求首先调用本接口 CNend
 * \param  N/A
 * \retval ::TD_SUCCESS                  Success CNcomment:成功 CNend
 * \retval ::SOC_ERR_PWM_DEV_NOT_EXIST    There is no PWM. CNcomment:PWM设备不存在 CNend
 * \retval ::SOC_ERR_PWM_OPEN_ERR         Open PWM failed. CNcomment:PWM打开失败 CNend
 * \see \n
 * N/A
 */
td_s32 uapi_pwm_init(td_void);

/*
 * \brief DeInitializes the PWM module.CNcomment:去初始化PWM模块 CNend
 * \attention N/A
 * \param  N/A
 * \retval ::TD_SUCCESS                  Success CNcomment:成功 CNend
 * \retval ::SOC_ERR_PWM_DEV_NOT_EXIST    There is no PWM. CNcomment:PWM设备不存在 CNend
 * \retval ::SOC_ERR_PWM_CLOSE_ERR        Open PWM failed. CNcomment:PWM关闭失败 CNend
 * \see \n
 * N/A
 */
td_s32 uapi_pwm_deinit(td_void);

/*
 * \brief Set PWM attributes.CNcomment:获取PWM属性 CNend
 * \attention N/A
 * \param[in] pwm_id  Pin number. CNcomment:PWM 管脚号
 * \param[out] attr  Pointer of PWM attributes. CNcomment:PWM属性指针，见::uapi_pwm_attr CNend
 * \retval ::TD_SUCCESS                  Success CNcomment:成功 CNend
 * \retval ::SOC_ERR_PWM_INVALID_PARA     Parameter is invalid. CNcomment:参数无效 CNend
 * \retval ::SOC_ERR_PWM_INVALID_OPT      Opration is invalid. CNcomment:操作无效 CNend
 * \see \n
 * N/A
 */
td_s32 uapi_pwm_get_attr(td_u32 pwm_id, uapi_pwm_attr *pwm_attr);

/*
 * \brief Set PWM attributes.CNcomment:设置PWM属性 CNend
 * \attention N/A
 * \param[in] pwm_id  Pin number. CNcomment:PWM 管脚号
 * \param[in] attr  Pointer of PWM attributes. CNcomment:PWM属性指针，见::uapi_pwm_attr CNend
 * \retval ::TD_SUCCESS                  Success CNcomment:成功 CNend
 * \retval ::SOC_ERR_PWM_INVALID_PARA     Parameter is invalid. CNcomment:参数无效 CNend
 * \retval ::SOC_ERR_PWM_INVALID_OPT      Opration is invalid. CNcomment:操作无效 CNend
 * \see \n
 * N/A
 */
td_s32 uapi_pwm_set_attr(td_u32 pwm_id, const uapi_pwm_attr *pwm_attr);

/*
 * \brief Send signal to PWM.CNcomment:向PWM发送信号 CNend
 * \attention N/A
 * \param[in] pwm_id  Pin number. CNcomment:PWM 管脚号
 * \param[in] carrier_time  The duration of carrier signal(us). CNcomment:载波信号持续时间(us) CNend
 * \param[in] low_level_time  The duration of low-level signal(us). CNcomment:低信号持续时间(us) CNend
 * \retval ::TD_SUCCESS                  Success CNcomment:成功 CNend
 * \retval ::SOC_ERR_PWM_INVALID_PARA     Parameter is invalid. CNcomment:参数无效 CNend
 * \retval ::SOC_ERR_PWM_INVALID_OPT      Opration is invalid. CNcomment:操作无效 CNend
 * \see \n
 * N/A
 */
td_s32 uapi_pwm_send_signal(td_u32 pwm_id, td_u32 carrier_time, td_u32 low_level_time);

/*
 * \brief Set enable PWM.CNcomment:设置PWM使能 CNend
 * \attention N/A
 * \param[in] pwm_id  Pin number. CNcomment:PWM 管脚号
 * \param[in] eable  enable or disable PWM. CNcomment:使能或不使能PWM CNend
 * \retval ::TD_SUCCESS                  Success CNcomment:成功 CNend
 * \retval ::SOC_ERR_PWM_INVALID_PARA     Parameter is invalid. CNcomment:参数无效 CNend
 * \retval ::SOC_ERR_PWM_INVALID_OPT      Opration is invalid. CNcomment:操作无效 CNend
 * \see \n
 * N/A
 */
td_s32 uapi_pwm_set_enable(td_u32 pwm_id, td_bool enable);

 /*
 * \brief Set PWM attributes.CNcomment:向MOTO-PWM发送信号 CNend
 * \attention n
 * This interface does not support continuous configuration. Disable this interface after it is used.
 * CNcomment 本接口不支持连续配置，使用完成后需去使能 CNend
 * \param[in] pwm_id  Pin number. CNcomment:PWM 管脚号
 * \param[in] attr  Pointer of PWM attributes. CNcomment:PWM属性指针，见::uapi_pwm_attr CNend
 * \param[in] time_us  Pwm wave output duration CNcomment:PWM波的输出时长(单位:us)
 * \retval ::TD_SUCCESS                  Success CNcomment:成功 CNend
 * \retval ::SOC_ERR_PWM_INVALID_PARA     Parameter is invalid. CNcomment:参数无效 CNend
 * \retval ::SOC_ERR_PWM_INVALID_OPT      Opration is invalid. CNcomment:操作无效 CNend
 * \see \n
 * N/A
 */
td_s32 uapi_pwm_moto_trigger(td_u32 pwm_id, const uapi_pwm_attr *pwm_attr, td_u32 time_us);


#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif

#endif /* UAPI_PWM_H */