component/bt : add cpp extern c

1. add cpp extern c
2. retab tab to 4 space

components/bt/bluedroid/api/include/esp_blufi_api.h

@@ -21,6 +21,10 @@
 #include "bta_gatt_api.h"
 #include "esp_err.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define ESP_BLUFI_RECV_DATA_LEN_MAX (64+1)
 
 #define ESP_BLUFI_EVENT_INIT_FINISH         0
@@ -112,6 +116,8 @@ esp_err_t esp_blufi_profile_init(void);
  */
 esp_err_t esp_blufi_profile_deinit(void);
 
-
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* _ESP_BLUFI_API_ */

components/bt/bluedroid/api/include/esp_bt_defs.h

@@ -18,6 +18,10 @@
 #include <stdint.h>
 #include <stdbool.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /// Status Return Value
 typedef enum {
     ESP_BT_STATUS_SUCCESS          =  0,          /* Successful operation. */
@@ -99,4 +103,8 @@ typedef enum {
  */
 typedef void (* esp_profile_cb_t)(uint32_t event, void *param);
 
-#endif      ///__ESP_BT_DEFS_H__
+#ifdef __cplusplus
+}
+#endif
+
+#endif     /* __ESP_BT_DEFS_H__ */

components/bt/bluedroid/api/include/esp_bt_main.h

@@ -18,6 +18,10 @@
 #include "btc_main.h"
 #include "esp_err.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * @brief     Enable bluetooth, must after esp_init_bluetooth()
  *
@@ -54,5 +58,8 @@ esp_err_t esp_init_bluetooth(void);
  */
 esp_err_t esp_deinit_bluetooth(void);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* __ESP_BT_MAIN_H__ */

components/bt/bluedroid/api/include/esp_gap_ble_api.h

@@ -21,6 +21,10 @@
 #include "esp_err.h"
 #include "esp_bt_defs.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /// GAP BLE callback event type
 typedef enum {
 	ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT        = 0,		/*!< When advertising data set complete, the event comes */
@@ -421,4 +425,8 @@ esp_err_t esp_ble_gap_set_device_name(const char *name);
  */
 uint8_t *esp_ble_resolve_adv_data(uint8_t *adv_data, uint8_t type, uint8_t *length);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __ESP_GAP_BLE_API_H__ */

components/bt/bluedroid/api/include/esp_gatt_defs.h

@@ -17,6 +17,10 @@
 
 #include "esp_bt_defs.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /// Attribute write data type from the client
 typedef enum {
 	ESP_GATT_PREP_WRITE_CANCEL    = 0x00,		/*!< Prepare write cancel */
@@ -170,4 +174,8 @@ typedef enum {
 
 typedef uint32_t    esp_gatt_if_t;							/*!< Gatt interface type, different application on GATT client use different gatt_if */
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __ESP_GATT_DEFS_H__ */

components/bt/bluedroid/api/include/esp_gattc_api.h

@@ -20,6 +20,10 @@
 #include "esp_gatt_defs.h"
 #include "esp_err.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /// GATT Client callback function events
 typedef enum {
 	ESP_GATTC_REG_EVT                 = 0,        /*!< When GATT client is registered, the event comes */
@@ -572,5 +576,8 @@ esp_gatt_status_t esp_ble_gattc_unregister_for_notify (esp_gatt_if_t gatt_if,
         esp_gatt_srvc_id_t *srvc_id,
         esp_gatt_id_t *char_id);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* __ESP_GATTC_API_H__ */

components/bt/bluedroid/api/include/esp_gatts_api.h

@@ -21,6 +21,10 @@
 #include "bta_gatt_api.h"
 #include "esp_err.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /// GATT Server callback function events
 typedef enum {
 	ESP_GATTS_REG_EVT                = 0,		/*!< When register application id, the event comes */
@@ -458,5 +462,8 @@ esp_err_t esp_ble_gatts_open(esp_gatt_if_t gatt_if, esp_bd_addr_t remote_bda, bo
  */
 esp_err_t esp_ble_gatts_close(uint16_t conn_id);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif /* __ESP_GATTS_API_H__ */