esp-idf/components/freemodbus/common/mbc_slave.h

108 wiersze
5.1 KiB
C

/* Copyright 2018 Espressif Systems (Shanghai) PTE LTD
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _MB_CONTROLLER_SLAVE_H
#define _MB_CONTROLLER_SLAVE_H
#include "driver/uart.h" // for uart defines
#include "errno.h" // for errno
#include "sys/queue.h" // for list
#include "esp_log.h" // for log write
#include "string.h" // for strerror()
#include "esp_modbus_slave.h" // for public type defines
#include "esp_modbus_callbacks.h" // for callback functions
/* ----------------------- Defines ------------------------------------------*/
#define MB_INST_MIN_SIZE (2) // The minimal size of Modbus registers area in bytes
#define MB_INST_MAX_SIZE (65535 * 2) // The maximum size of Modbus area in bytes
#define MB_CONTROLLER_NOTIFY_QUEUE_SIZE (CONFIG_FMB_CONTROLLER_NOTIFY_QUEUE_SIZE) // Number of messages in parameter notification queue
#define MB_CONTROLLER_NOTIFY_TIMEOUT (pdMS_TO_TICKS(CONFIG_FMB_CONTROLLER_NOTIFY_TIMEOUT)) // notification timeout
#define MB_SLAVE_TAG "MB_CONTROLLER_SLAVE"
#define MB_SLAVE_CHECK(a, ret_val, str, ...) \
if (!(a)) { \
ESP_LOGE(MB_SLAVE_TAG, "%s(%u): " str, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
return (ret_val); \
}
#define MB_SLAVE_ASSERT(con) do { \
if (!(con)) { ESP_LOGE(MB_SLAVE_TAG, "assert errno:%d, errno_str: !(%s)", errno, strerror(errno)); assert(0 && #con); } \
} while (0)
/**
* @brief Device communication parameters for master
*/
typedef struct {
mb_mode_type_t mode; /*!< Modbus communication mode */
uint8_t slave_addr; /*!< Slave address field */
uart_port_t port; /*!< Modbus communication port (UART) number */
uint32_t baudrate; /*!< Modbus baudrate */
uart_parity_t parity; /*!< Modbus UART parity settings */
} mb_slave_comm_info_t;
/**
* @brief Modbus area descriptor list item
*/
typedef struct mb_descr_entry_s{
uint16_t start_offset; /*!< Modbus start address for area descriptor */
mb_param_type_t type; /*!< Type of storage area descriptor */
void* p_data; /*!< Instance address for storage area descriptor */
size_t size; /*!< Instance size for area descriptor (bytes) */
LIST_ENTRY(mb_descr_entry_s) entries; /*!< The Modbus area descriptor entry */
} mb_descr_entry_t;
/**
* @brief Modbus controller handler structure
*/
typedef struct {
mb_port_type_t port_type; /*!< port type */
mb_communication_info_t mbs_comm; /*!< communication info */
TaskHandle_t mbs_task_handle; /*!< task handle */
EventGroupHandle_t mbs_event_group; /*!< controller event group */
QueueHandle_t mbs_notification_queue_handle; /*!< controller notification queue */
LIST_HEAD(mbs_area_descriptors_, mb_descr_entry_s) mbs_area_descriptors[MB_PARAM_COUNT]; /*!< register area descriptors */
} mb_slave_options_t;
typedef mb_event_group_t (*iface_check_event)(mb_event_group_t); /*!< Interface method check_event */
typedef esp_err_t (*iface_get_param_info)(mb_param_info_t*, uint32_t); /*!< Interface method get_param_info */
typedef esp_err_t (*iface_set_descriptor)(mb_register_area_descriptor_t); /*!< Interface method set_descriptor */
/**
* @brief Request mode for parameter to use in data dictionary
*/
typedef struct
{
mb_slave_options_t opts; /*!< Modbus slave options */
// Functional pointers to internal static functions of the implementation (public interface methods)
iface_init init; /*!< Interface method init */
iface_destroy destroy; /*!< Interface method destroy */
iface_setup setup; /*!< Interface method setup */
iface_start start; /*!< Interface method start */
iface_check_event check_event; /*!< Interface method check_event */
iface_get_param_info get_param_info; /*!< Interface method get_param_info */
iface_set_descriptor set_descriptor; /*!< Interface method set_descriptor */
// Modbus register calback function pointers
reg_discrete_cb slave_reg_cb_discrete; /*!< Stack callback discrete rw method */
reg_input_cb slave_reg_cb_input; /*!< Stack callback input rw method */
reg_holding_cb slave_reg_cb_holding; /*!< Stack callback holding rw method */
reg_coils_cb slave_reg_cb_coils; /*!< Stack callback coils rw method */
} mb_slave_interface_t;
#endif