feat(bt/bluedroid): Report sniff interval to application layer

Author: xiongweichao

components/bt/host/bluedroid/api/include/api/esp_gap_bt_api.h

@@ -440,8 +440,9 @@ typedef union {
      * @brief ESP_BT_GAP_MODE_CHG_EVT
      */
     struct mode_chg_param {
-        esp_bd_addr_t bda;                      /*!< remote bluetooth device address*/
-        esp_bt_pm_mode_t mode;                  /*!< PM mode*/
+        esp_bd_addr_t bda;                      /*!< remote bluetooth device address */
+        esp_bt_pm_mode_t mode;                  /*!< PM mode */
+        uint16_t interval;                      /*!< Number of baseband slots. unit is 0.625ms */
     } mode_chg;                                 /*!< mode change event parameter struct */
 
     /**

components/bt/host/bluedroid/bta/dm/bta_dm_pm.c

@@ -75,7 +75,7 @@ void bta_dm_init_pm(void)
 {
     memset(&bta_dm_conn_srvcs, 0x00, sizeof(bta_dm_conn_srvcs));
 
-    /* if there are no power manger entries, so not register */
+    /* if there are no power manager entries, so not register */
     if (p_bta_dm_pm_cfg[0].app_id != 0) {
         bta_sys_pm_register((tBTA_SYS_CONN_CBACK *)bta_dm_pm_cback);
 
@@ -694,9 +694,9 @@ static BOOLEAN bta_dm_pm_sniff(tBTA_DM_PEER_DEVICE *p_peer_dev, UINT8 index)
 #endif
     {
 #if (BTM_SSR_INCLUDED == TRUE)
-        /* Dont initiate Sniff if controller has alreay accepted
+        /* Dont initiate Sniff if controller has already accepted
          * remote sniff params. This avoid sniff loop issue with
-         * some agrresive headsets who use sniff latencies more than
+         * some aggressive headsets who use sniff latencies more than
          * DUT supported range of Sniff intervals.*/
         if ((mode == BTM_PM_MD_SNIFF) && (p_peer_dev->info & BTA_DM_DI_ACP_SNIFF)) {
             APPL_TRACE_DEBUG("%s: already in remote initiate sniff", __func__);
@@ -917,7 +917,7 @@ void bta_dm_pm_btm_status(tBTA_DM_MSG *p_data)
         } else {
 #if (BTM_SSR_INCLUDED == TRUE)
             if (p_dev->prev_low) {
-                /* need to send the SSR paramaters to controller again */
+                /* need to send the SSR parameters to controller again */
                 bta_dm_pm_ssr(p_dev->peer_bdaddr);
             }
             p_dev->prev_low = BTM_PM_STS_ACTIVE;
@@ -980,6 +980,7 @@ void bta_dm_pm_btm_status(tBTA_DM_MSG *p_data)
             ) {
             tBTA_DM_SEC conn;
             conn.mode_chg.mode = p_data->pm_status.status;
+            conn.mode_chg.interval = p_data->pm_status.value;
             bdcpy(conn.mode_chg.bd_addr, p_data->pm_status.bd_addr);
             bta_dm_cb.p_sec_cback(BTA_DM_PM_MODE_CHG_EVT, (tBTA_DM_SEC *)&conn);
         }

components/bt/host/bluedroid/bta/include/bta/bta_api.h

@@ -1001,6 +1001,7 @@ typedef struct {
 typedef struct {
     BD_ADDR         bd_addr;            /* BD address peer device. */
     tBTA_PM_MODE    mode;               /* the new connection role */
+    UINT16          interval;           /* Number of baseband slots */
 } tBTA_DM_MODE_CHG;
 
 typedef struct {

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

@@ -625,6 +625,7 @@ static void btc_dm_pm_mode_chg_evt(tBTA_DM_MODE_CHG *p_mode_chg)
     msg->act = BTC_GAP_BT_MODE_CHG_EVT;
     memcpy(param.mode_chg.bda, p_mode_chg->bd_addr, ESP_BD_ADDR_LEN);
     param.mode_chg.mode = p_mode_chg->mode;
+    param.mode_chg.interval= p_mode_chg->interval;
     memcpy(msg->arg, &param, sizeof(esp_bt_gap_cb_param_t));
 
     ret = btc_inter_profile_call(msg);

examples/bluetooth/bluedroid/classic_bt/a2dp_sink/main/main.c

@@ -119,7 +119,8 @@ static void bt_app_gap_cb(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *pa
 
     /* when GAP mode changed, this event comes */
     case ESP_BT_GAP_MODE_CHG_EVT:
-        ESP_LOGI(BT_AV_TAG, "ESP_BT_GAP_MODE_CHG_EVT mode: %d", param->mode_chg.mode);
+        ESP_LOGI(BT_AV_TAG, "ESP_BT_GAP_MODE_CHG_EVT mode: %d, interval: %.2f ms",
+                 param->mode_chg.mode, param->mode_chg.interval * 0.625);
         break;
     /* when ACL connection completed, this event comes */
     case ESP_BT_GAP_ACL_CONN_CMPL_STAT_EVT: