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managed_components/espressif__esp-modbus/freemodbus/common/mbc_slave.h

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+/*
+ * SPDX-FileCopyrightText: 2016-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#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
+
+/**
+ * @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