feat(bt/bluedroid): Support get status of bluedroid host

components/bt/host/bluedroid/bta/gatt/bta_gattc_co.c

@@ -510,6 +510,10 @@ UINT8 bta_gattc_co_find_hash_in_cache(hash_key_t hash_key)
 
 UINT8 bta_gattc_co_get_addr_num(void)
 {
+    if (cache_env == NULL) {
+        return 0;
+    }
+
     return cache_env->num_addr;
 }
 

components/bt/host/bluedroid/bta/gatt/bta_gattc_main.c

@@ -534,4 +534,17 @@ void bta_gattc_deinit(void)
     FREE_AND_RESET(bta_gattc_cb_ptr);
 #endif /* #if BTA_DYNAMIC_MEMORY */
 }
+
+uint8_t bta_gattc_cl_rcb_active_count(void)
+{
+    uint8_t count = 0;
+
+    for (uint8_t i = 0; i < BTA_GATTC_CL_MAX; i ++) {
+        if (bta_gattc_cb.cl_rcb[i].in_use) {
+            count++;
+        }
+    }
+
+    return count;
+}
 #endif /* GATTC_INCLUDED == TRUE && BLE_INCLUDED == TRUE */

components/bt/host/bluedroid/bta/gatt/bta_gatts_main.c

@@ -152,4 +152,17 @@ void bta_gatts_deinit(void)
 #endif /* #if BTA_DYNAMIC_MEMORY */
 }
 
+uint8_t bta_gatts_srvc_active_count(void)
+{
+    uint8_t count = 0;
+
+    for (uint8_t i = 0; i < BTA_GATTS_MAX_SRVC_NUM; i ++) {
+        if (bta_gatts_cb.srvc_cb[i].in_use) {
+            count++;
+        }
+    }
+
+    return count;
+}
+
 #endif /* GATTS_INCLUDED */

components/bt/host/bluedroid/btc/core/btc_main.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -116,3 +116,77 @@ void btc_main_call_handler(btc_msg_t *msg)
         break;
     }
 }
+
+uint32_t btc_get_ble_status(void)
+{
+    uint32_t status = BTC_BLE_STATUS_IDLE;
+
+    #if (BLE_INCLUDED == TRUE)
+    // Number of active advertising
+    extern uint8_t btm_ble_adv_active_count(void);
+    if (btm_ble_adv_active_count()) {
+        status |= BIT(BTC_BLE_STATUS_ADV);
+    }
+
+    // Number of active scanning
+    extern uint8_t btm_ble_scan_active_count(void);
+    if (btm_ble_scan_active_count()) {
+        status |= BIT(BTC_BLE_STATUS_SCAN);
+    }
+
+    // Number of active GATT tcb
+    extern uint8_t gatt_tcb_active_count(void);
+    if (gatt_tcb_active_count()) {
+        status |= BIT(BTC_BLE_STATUS_CONN);
+    }
+
+    #if (SMP_INCLUDED == TRUE)
+    // Number of saved bonded devices
+    if (btc_storage_get_num_ble_bond_devices()) {
+        status |= BIT(BTC_BLE_STATUS_BOND);
+    }
+    #endif
+    #endif
+
+    // Number of recorded devices
+    extern uint8_t btdm_sec_dev_active_count(void);
+    if (btdm_sec_dev_active_count()) {
+        status |= BIT(BTC_BLE_STATUS_DEV);
+    }
+
+    // Number of active ACL connection
+    extern uint8_t btm_acl_active_count(void);
+    if (btm_acl_active_count()) {
+        status |= BIT(BTC_BLE_STATUS_CONN);
+    }
+
+    // Number of active L2C plcb
+    extern uint8_t l2cu_plcb_active_count(void);
+    if (l2cu_plcb_active_count()) {
+        status |= BIT(BTC_BLE_STATUS_CONN);
+    }
+
+    #if (GATTC_INCLUDED == TRUE)
+    // Number of registered GATTC APP
+    extern uint8_t bta_gattc_cl_rcb_active_count(void);
+    if (bta_gattc_cl_rcb_active_count()) {
+        status |= BIT(BTC_BLE_STATUS_GATTC_APP);
+    }
+
+    // Number of saved GATTC cache
+    extern UINT8 bta_gattc_co_get_addr_num(void);
+    if (bta_gattc_co_get_addr_num()) {
+        status |= BIT(BTC_BLE_STATUS_GATTC_CACHE);
+    }
+    #endif
+
+    #if (GATTS_INCLUDED == TRUE)
+    // Number of registered GATTS service
+    extern uint8_t bta_gatts_srvc_active_count(void);
+    if (bta_gatts_srvc_active_count()) {
+        status |= BIT(BTC_BLE_STATUS_GATTS_SRVC);
+    }
+    #endif
+
+    return status;
+}

components/bt/host/bluedroid/btc/include/btc/btc_main.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -28,6 +28,18 @@ typedef enum {
     BTC_MAIN_FUTURE_NUM,
 } btc_main_future_type_t;
 
+#define BTC_BLE_STATUS_IDLE 0
+typedef enum {
+    BTC_BLE_STATUS_ADV = 0,     // Advertising exist
+    BTC_BLE_STATUS_SCAN,        // Scanning exist
+    BTC_BLE_STATUS_CONN,        // Connection exist
+    BTC_BLE_STATUS_DEV,         // Device record exist
+    BTC_BLE_STATUS_BOND,        // Bond info exist
+    BTC_BLE_STATUS_GATTC_CACHE, // GATTC cache exist
+    BTC_BLE_STATUS_GATTC_APP,   // GATTC application exist
+    BTC_BLE_STATUS_GATTS_SRVC,  // GATTS service exist
+} tBTC_BLE_STATUS;
+
 future_t **btc_main_get_future_p(btc_main_future_type_t type);
 
 #if 0

components/bt/host/bluedroid/stack/btm/btm_ble.c

@@ -2907,5 +2907,28 @@ BOOLEAN btm_get_current_conn_params(BD_ADDR bda, UINT16 *interval, UINT16 *laten
     return FALSE;
 }
 
+uint8_t btm_ble_adv_active_count(void)
+{
+    uint8_t count = 0;
+    tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var;
+
+    if (p_cb->state & BTM_BLE_ADVERTISING) {
+        count++;
+    }
+
+    return count;
+}
+
+uint8_t btm_ble_scan_active_count(void)
+{
+    uint8_t count = 0;
+    tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var;
+
+    if (p_cb->state & BTM_BLE_SCANNING) {
+        count++;
+    }
+
+    return count;
+}
 
 #endif /* BLE_INCLUDED */

components/bt/host/bluedroid/stack/btm/btm_main.c

@@ -117,3 +117,36 @@ void btm_free(void)
     btm_ble_sem_free();
 #endif
 }
+
+uint8_t btm_acl_active_count(void)
+{
+    list_node_t *p_node = NULL;
+    tACL_CONN *p_acl_conn = NULL;
+    uint8_t count = 0;
+
+    for (p_node = list_begin(btm_cb.p_acl_db_list); p_node; p_node = list_next(p_node)) {
+        p_acl_conn = list_node(p_node);
+        if (p_acl_conn && p_acl_conn->in_use) {
+            count++;
+        }
+    }
+
+    return count;
+}
+
+uint8_t btdm_sec_dev_active_count(void)
+{
+    tBTM_SEC_DEV_REC *p_dev_rec = NULL;
+    list_node_t *p_node = NULL;
+    uint8_t count = 0;
+
+    /* First look for the non-paired devices for the oldest entry */
+    for (p_node = list_begin(btm_cb.p_sec_dev_rec_list); p_node; p_node = list_next(p_node)) {
+        p_dev_rec = list_node(p_node);
+        if (p_dev_rec && (p_dev_rec->sec_flags & BTM_SEC_IN_USE)) {
+            count++;
+        }
+    }
+
+    return count;
+}

components/bt/host/bluedroid/stack/gatt/gatt_main.c

@@ -1231,4 +1231,20 @@ void gatt_set_local_mtu(uint16_t mtu)
     gatt_default.local_mtu = mtu;
 }
 
+uint8_t gatt_tcb_active_count(void)
+{
+    tGATT_TCB   *p_tcb  = NULL;
+    list_node_t *p_node = NULL;
+    uint8_t count = 0;
+
+    for(p_node = list_begin(gatt_cb.p_tcb_list); p_node; p_node = list_next(p_node)) {
+        p_tcb = list_node(p_node);
+        if (p_tcb && p_tcb->in_use && (p_tcb->ch_state != GATT_CH_CLOSE)) {
+            count++;
+        }
+    }
+
+    return count;
+}
+
 #endif /* BLE_INCLUDED */