fix cpp compilation issues

modbus/mb_controller/common/include/esp_modbus_common.h

@@ -5,6 +5,7 @@
  */
 
 #pragma once
+#include <inttypes.h>
 
 #include "driver/uart.h"                    // for UART types
 #include "sdkconfig.h"
@@ -13,20 +14,12 @@
 #include "mb_endianness_utils.h"
 #endif
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include "port_common.h"
 
 #if __has_include("esp_check.h")
 #include "esp_check.h"
 #include "esp_log.h"
 
-#include <inttypes.h>
-
-#include "mb_port_types.h"
-
 #define MB_RETURN_ON_FALSE(a, err_code, tag, format, ...) ESP_RETURN_ON_FALSE(a, err_code, tag, format __VA_OPT__(,) __VA_ARGS__)
 
 #else
@@ -42,6 +35,10 @@ extern "C" {
 
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define MB_SLAVE_ADDR_PLACEHOLDER           (0xFF)
 #define MB_CONTROLLER_STACK_SIZE            (CONFIG_FMB_CONTROLLER_STACK_SIZE)  // Stack size for Modbus controller
 #define MB_CONTROLLER_PRIORITY              (CONFIG_FMB_PORT_TASK_PRIO - 1)     // priority of MB controller task

modbus/mb_objects/include/mb_port_types.h

@@ -9,19 +9,18 @@
 #include "mb_config.h"
 #include "mb_types.h"
 
+#define MB_ATTR_WEAK __attribute__ ((weak))
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#define MB_ATTR_WEAK __attribute__ ((weak))
-
 typedef enum _mb_comm_mode mb_mode_type_t;
 
 #if (CONFIG_FMB_COMM_MODE_ASCII_EN || CONFIG_FMB_COMM_MODE_RTU_EN)
 
 #include "driver/uart.h"
 
-__attribute__((__packed__))
 struct _port_serial_opts {
     mb_mode_type_t mode;            /*!< Modbus communication mode */
     uart_port_t port;               /*!< Modbus communication port (UART) number */
@@ -32,7 +31,7 @@ struct _port_serial_opts {
     uart_word_length_t data_bits;   /*!< Modbus number of data bits */
     uart_stop_bits_t stop_bits;     /*!< Modbus number of stop bits */
     uart_parity_t parity;           /*!< Modbus UART parity settings */
-};
+} __attribute__((__packed__));
 
 typedef struct _port_serial_opts mb_serial_opts_t;
 
@@ -44,16 +43,15 @@ typedef enum _addr_type_enum {
     MB_IPV6 = 2                     /*!< TCP IPV6 addressing */
 } mb_addr_type_t;
 
-__attribute__((__packed__))
+
 struct _port_common_opts {
     mb_mode_type_t mode;            /*!< Modbus communication mode */
     uint16_t port;                  /*!< Modbus communication port (UART) number */
     uint8_t uid;                    /*!< Modbus slave address field (dummy for master) */
     uint32_t response_tout_ms;      /*!< Modbus slave response timeout */
     uint64_t test_tout_us;          /*!< Modbus test timeout (reserved) */
-};
+} __attribute__((__packed__));
 
-__attribute__((__packed__))
 struct _port_tcp_opts {
     mb_mode_type_t mode;            /*!< Modbus communication mode */
     uint16_t port;                  /*!< Modbus communication port (UART) number */
@@ -65,7 +63,7 @@ struct _port_tcp_opts {
     void *ip_netif_ptr;             /*!< Modbus network interface */
     char *dns_name;                 /*!< Modbus node DNS name */
     bool start_disconnected;        /*!< (Master only option) do not wait for connection to all nodes before polling */
-};
+} __attribute__((__packed__));
 
 typedef struct _port_tcp_opts mb_tcp_opts_t;
 
@@ -100,7 +98,7 @@ typedef struct _uid_info {
     uint16_t uid;                   /*!< node unit ID (UID) field for MBAP frame  */
     uint16_t port;                  /*!< node port number */
     mb_comm_mode_t proto;           /*!< protocol type */
-    _Atomic mb_sock_state_t state;  /*!< node state */
+    atomic_int state;               /*!< node state */
     void *inst;                     /*!< pointer to linked instance */
 } mb_uid_info_t;