mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "esp_err.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @brief PID calculation type
|
|
*
|
|
*/
|
|
typedef enum {
|
|
PID_CAL_TYPE_INCREMENTAL, /*!< Incremental PID control */
|
|
PID_CAL_TYPE_POSITIONAL, /*!< Positional PID control */
|
|
} pid_calculate_type_t;
|
|
|
|
/**
|
|
* @brief Type of PID control block handle
|
|
*
|
|
*/
|
|
typedef struct pid_ctrl_block_t *pid_ctrl_block_handle_t;
|
|
|
|
/**
|
|
* @brief PID control parameters
|
|
*
|
|
*/
|
|
typedef struct {
|
|
float kp; // PID Kp parameter
|
|
float ki; // PID Ki parameter
|
|
float kd; // PID Kd parameter
|
|
float max_output; // PID maximum output limitation
|
|
float min_output; // PID minimum output limitation
|
|
float max_integral; // PID maximum integral value limitation
|
|
float min_integral; // PID minimum integral value limitation
|
|
pid_calculate_type_t cal_type; // PID calculation type
|
|
} pid_ctrl_parameter_t;
|
|
|
|
/**
|
|
* @brief PID control configuration
|
|
*
|
|
*/
|
|
typedef struct {
|
|
pid_ctrl_parameter_t init_param; // Initial parameters
|
|
} pid_ctrl_config_t;
|
|
|
|
/**
|
|
* @brief Create a new PID control session, returns the handle of control block
|
|
*
|
|
* @param[in] config PID control configuration
|
|
* @param[out] ret_pid Returned PID control block handle
|
|
* @return
|
|
* - ESP_OK: Created PID control block successfully
|
|
* - ESP_ERR_INVALID_ARG: Created PID control block failed because of invalid argument
|
|
* - ESP_ERR_NO_MEM: Created PID control block failed because out of memory
|
|
*/
|
|
esp_err_t pid_new_control_block(const pid_ctrl_config_t *config, pid_ctrl_block_handle_t *ret_pid);
|
|
|
|
/**
|
|
* @brief Delete the PID control block
|
|
*
|
|
* @param[in] pid PID control block handle, created by `pid_new_control_block()`
|
|
* @return
|
|
* - ESP_OK: Delete PID control block successfully
|
|
* - ESP_ERR_INVALID_ARG: Delete PID control block failed because of invalid argument
|
|
*/
|
|
esp_err_t pid_del_control_block(pid_ctrl_block_handle_t pid);
|
|
|
|
/**
|
|
* @brief Update PID parameters
|
|
*
|
|
* @param[in] pid PID control block handle, created by `pid_new_control_block()`
|
|
* @param[in] params PID parameters
|
|
* @return
|
|
* - ESP_OK: Update PID parameters successfully
|
|
* - ESP_ERR_INVALID_ARG: Update PID parameters failed because of invalid argument
|
|
*/
|
|
esp_err_t pid_update_parameters(pid_ctrl_block_handle_t pid, const pid_ctrl_parameter_t *params);
|
|
|
|
/**
|
|
* @brief Input error and get PID control result
|
|
*
|
|
* @param[in] pid PID control block handle, created by `pid_new_control_block()`
|
|
* @param[in] input_error error data that feed to the PID controller
|
|
* @param[out] ret_result result after PID calculation
|
|
* @return
|
|
* - ESP_OK: Run a PID compute successfully
|
|
* - ESP_ERR_INVALID_ARG: Run a PID compute failed because of invalid argument
|
|
*/
|
|
esp_err_t pid_compute(pid_ctrl_block_handle_t pid, float input_error, float *ret_result);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|