Add controlling Bluetooth with button

Bluetooth.h

@@ -361,7 +361,7 @@ bool bt_setup_hw() {
       #endif
       unsigned char *hash = MD5::make_hash(data, BT_DEV_ADDR_LEN);
       memcpy(bt_dh, hash, BT_DEV_HASH_LEN);
-      sprintf(bt_devname, "RNode %02X%02X", bt_dh[14], bt_dh[15]);
+      sprintf(bt_devname, "openCom XL %02X%02X", bt_dh[14], bt_dh[15]);
       free(data);
 
       bt_ready = true;

Input.h

@@ -20,6 +20,8 @@
   #define RELEASED HIGH
 
   #define BUTTON_MIN_DURATION 50
+  #define BUTTON_3S_DURATION 3000
+  #define BUTTON_6S_DURATION 6000
 
   #define EVENT_ALL                 0x00
   #define EVENT_CLICKS              0x01

opencom_xl_firmware.ino

@@ -1316,11 +1316,17 @@ void process_serial() {
 #if HAS_INPUT
 void button_event(uint8_t event, unsigned long duration) {
   if (duration > BUTTON_MIN_DURATION) {
+      if (duration > BUTTON_6S_DURATION) {
+        bt_stop();
+      } else if (duration > BUTTON_3S_DURATION) {
+        bt_enable_pairing();
+      } else {
     #if HAS_BUZZER_CTRL
         toggle_buzzer_enable();
     #endif
       }
   }
+}
 #endif
 
 void poll_buffers() {