Clear bluetooth bonds on multi-press and factory_reset (#1176)

* Clear bluetooth bonds on multi-press and factory_reset

src/main.cpp

@@ -340,6 +340,9 @@ class ButtonThread : public OSThread
     {
 #ifndef NO_ESP32
         clearNVS();
+#endif
+#ifdef NRF52_SERIES
+        clearBonds();
 #endif
     }
 

src/main.h

@@ -27,4 +27,4 @@ extern uint32_t shutdownAtMsec;
 // This will supress the current delay and instead try to run ASAP.
 extern bool runASAP;
 
-void nrf52Setup(), esp32Setup(), nrf52Loop(), esp32Loop();
+void nrf52Setup(), esp32Setup(), nrf52Loop(), esp32Loop(), clearBonds();

src/mesh/NodeDB.cpp

@@ -26,6 +26,11 @@
 #include <nvs_flash.h>
 #endif
 
+#ifdef NRF52_SERIES
+#include <bluefruit.h>
+#include <utility/bonding.h>
+#endif
+
 NodeDB nodeDB;
 
 // we have plenty of ram so statically alloc this tempbuf (for now)
@@ -90,6 +95,16 @@ bool NodeDB::resetRadioConfig()
 #ifndef NO_ESP32
         // This will erase what's in NVS including ssl keys, persistant variables and ble pairing
         nvs_flash_erase();
+#endif
+#ifdef NRF52_SERIES
+    Bluefruit.begin();
+
+    DEBUG_MSG("Clearing bluetooth bonds!\n");
+    bond_print_list(BLE_GAP_ROLE_PERIPH);
+    bond_print_list(BLE_GAP_ROLE_CENTRAL);
+
+    Bluefruit.Periph.clearBonds();
+    Bluefruit.Central.clearBonds();
 #endif
         didFactoryReset = true;
     }

src/nrf52/NRF52Bluetooth.cpp

@@ -5,6 +5,7 @@
 #include "mesh/PhoneAPI.h"
 #include "mesh/mesh-pb-constants.h"
 #include <bluefruit.h>
+#include <utility/bonding.h>
 
 static BLEService meshBleService = BLEService(BLEUuid(MESH_SERVICE_UUID_16));
 static BLECharacteristic fromNum = BLECharacteristic(BLEUuid(FROMNUM_UUID_16));
@@ -266,3 +267,13 @@ void updateBatteryLevel(uint8_t level)
 {
     blebas.write(level);
 }
+
+void NRF52Bluetooth::clearBonds()
+{
+    DEBUG_MSG("Clearing bluetooth bonds!\n");
+    bond_print_list(BLE_GAP_ROLE_PERIPH);
+    bond_print_list(BLE_GAP_ROLE_CENTRAL);
+
+    Bluefruit.Periph.clearBonds();
+    Bluefruit.Central.clearBonds();
+}

src/nrf52/NRF52Bluetooth.h

@@ -5,5 +5,6 @@ class NRF52Bluetooth
   public:
     void setup();
     void shutdown();
+    void clearBonds();
 };
 

src/nrf52/main-nrf52.cpp

@@ -75,7 +75,7 @@ void setBluetoothEnable(bool on)
                 else {
                     nrf52Bluetooth = new NRF52Bluetooth();
                     nrf52Bluetooth->setup();
-
+                    
                     // We delay brownout init until after BLE because BLE starts soft device
                     initBrownout();
                 }
@@ -185,4 +185,12 @@ void cpuDeepSleep(uint64_t msecToWake)
         delay(5000);
         DEBUG_MSG(".");
     }
+}
+
+void clearBonds() {
+    if (!nrf52Bluetooth) {
+        nrf52Bluetooth = new NRF52Bluetooth();
+        nrf52Bluetooth->setup();
+    }
+    nrf52Bluetooth->clearBonds();
 }