Add clearAll parameter to deinit(), Fixes #12.

Adds the ability to clear all resources consumed during BLE operation when deinitializing and shutting down BLE.
Useful when BLE is used intermittently or in a task that initializes, performs operations then deinitializes.

By setting the clearAll parameter to true all created BLE objects will be deleted, freeing the memory for other tasks.

Warning: This will invalidate any pointers that may be referencing the deleted objects.

Author: h2zero

src/NimBLEDevice.cpp

@@ -540,7 +540,7 @@ void NimBLEDevice::stopAdvertising() {
 /**
  * @brief Shutdown the NimBLE stack/controller.
  */
-/* STATIC */ void NimBLEDevice::deinit() {
+/* STATIC */ void NimBLEDevice::deinit(bool clearAll) {
     int ret = nimble_port_stop();
     if (ret == 0) {
         nimble_port_deinit();
@@ -552,6 +552,42 @@ void NimBLEDevice::stopAdvertising() {
 
         initialized = false;
         m_synced = false;
+
+        if(clearAll) {
+#if defined(CONFIG_BT_NIMBLE_ROLE_PERIPHERAL)
+            if(NimBLEDevice::m_pServer != nullptr) {
+                delete NimBLEDevice::m_pServer;
+                NimBLEDevice::m_pServer = nullptr;
+            }
+#endif
+
+#if defined(CONFIG_BT_NIMBLE_ROLE_BROADCASTER)
+            if(NimBLEDevice::m_bleAdvertising != nullptr) {
+                delete NimBLEDevice::m_bleAdvertising;
+                NimBLEDevice::m_bleAdvertising = nullptr;
+            }
+#endif
+
+#if defined(CONFIG_BT_NIMBLE_ROLE_OBSERVER)
+            if(NimBLEDevice::m_pScan != nullptr) {
+                delete NimBLEDevice::m_pScan;
+                NimBLEDevice::m_pScan= nullptr;
+            }
+#endif
+
+#if defined( CONFIG_BT_NIMBLE_ROLE_CENTRAL)
+            for(auto &it : m_cList) {
+                deleteClient(it);
+                m_cList.clear();
+            }
+#endif
+
+            m_ignoreList.clear();
+
+            if(m_securityCallbacks != nullptr) {
+                delete m_securityCallbacks;
+            }
+        }
     }
 } // deinit
 

src/NimBLEDevice.h

@@ -91,7 +91,7 @@ extern "C" void ble_store_config_init(void);
 class NimBLEDevice {
 public:
     static void             init(const std::string &deviceName);
-    static void             deinit();
+    static void             deinit(bool clearAll = false);
     static bool             getInitialized();
     static NimBLEAddress    getAddress();
     static std::string      toString();