v1.4.2: Allow dynamically change advertising data

src/NimBLEAdvertising.cpp

@@ -776,6 +776,33 @@ int NimBLEAdvertising::handleGapEvent(struct ble_gap_event *event, void *arg) {
     return 0;
 }
 
+/**
+ * @brief Refresh advertsing data dynamically without stop/start cycle
+ *        For instance allows refreshing manufacturer data dynamically
+ * 
+ * @return int - error code from the operation
+ */
+int NimBLEAdvertising::refreshAdvertisingData() {
+    int rc = ble_gap_adv_set_fields(&m_advData);
+    switch(rc) {
+        case 0:
+            break;
+
+        case BLE_HS_EBUSY:
+            NIMBLE_LOGE(LOG_TAG, "Already advertising");
+            break;
+
+        case BLE_HS_EMSGSIZE:
+            NIMBLE_LOGE(LOG_TAG, "Advertisement data too long");
+            break;
+
+        default:
+            NIMBLE_LOGE(LOG_TAG, "Error setting advertisement data; rc=%d, %s",
+                        rc, NimBLEUtils::returnCodeToString(rc));
+            break;
+    }
+    return rc;
+}
 
 /**
  * @brief Add data to the payload to be advertised.

src/NimBLEAdvertising.h

@@ -119,6 +119,7 @@ class NimBLEAdvertising {
     void reset();
     void advCompleteCB();
     bool isAdvertising();
+    int refreshAdvertisingData();
 
 private:
     friend class NimBLEDevice;