diff --git a/flipper_serial.py b/flipper_serial.py
new file mode 100644
index 0000000..feb8722
--- /dev/null
+++ b/flipper_serial.py
@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+
+# pylint: disable=missing-class-docstring
+# pylint: disable=missing-function-docstring
+# pylint: disable=missing-module-docstring
+# pylint: disable=line-too-long
+
+
+import serial
+import serial.tools.list_ports
+import serial_ble
+
+class FlipperSerial():
+    _flipperusb = "USB VID:PID=0483:5740"
+    _read_characteristic = '19ed82ae-ed21-4c9d-4145-228e61fe0000'
+    _write_characteristic = '19ed82ae-ed21-4c9d-4145-228e62fe0000'
+    _is_cli = True
+
+    def discover(self):
+        ports = serial.tools.list_ports.comports()
+        for check_port in ports:
+            if self._flipperusb in check_port.hwid:
+                print("Found: ", check_port.description, "(",check_port.device,")")
+                return check_port.device
+        return None
+
+    def open(self, **resource):
+        for key, value in resource.items():
+            if key == "serial_device" and value is not None:
+                rsc = self._create_physical_serial(value)
+            if key == "ble_address" and value is not None:
+                rsc =  self._create_ble_serial(value)
+
+        if rsc is None:
+            raise FlipperSerialException
+        return rsc
+
+    def close(self):
+        try:
+            self._serial_device.stop()
+            print('stopped bluetooth')
+        except AttributeError:
+            pass
+
+    def _create_physical_serial(self, file):
+        resource = serial.Serial(file, timeout=1)
+        resource.baudrate = 230400
+        resource.flushOutput()
+        resource.flushInput()
+        if self._is_cli:
+            resource.read_until(b'>: ')
+            resource.write(b"start_rpc_session\r")
+            resource.read_until(b'\n')
+        return resource
+
+    def _create_ble_serial(self, address):
+        bluetooth = serial_ble.BLESerial(address, self._read_characteristic, self._write_characteristic)
+        print('connecting...')
+        bluetooth.start(None)
+        print('connected')
+
+        return bluetooth
+
+class FlipperSerialException(Exception):
+    pass
diff --git a/fzfs.py b/fzfs.py
index 8c73e75..e71fd5a 100644
--- a/fzfs.py
+++ b/fzfs.py
@@ -21,15 +21,8 @@ import serial_ble
 import serial.tools.list_ports
 import sys
 
-flipperusbid = "USB VID:PID=0483:5740"
 
-def autodiscover():
-    ports = serial.tools.list_ports.comports()
-    for check_port in ports:
-        if flipperusbid in check_port.hwid:
-            print("Found: ", check_port.description, "(",check_port.device,")")
-            return check_port.device
-    return None
+import flipper_serial
 
 def main():
     parser = argparse.ArgumentParser(description='FUSE driver for flipper serial connection')
@@ -45,13 +38,14 @@ def main():
     if not os.path.isdir(mountpoint):
         print('mountpoint must be an empty folder')
         return
+    flsrl = flipper_serial.FlipperSerial()
 
     if len(os.listdir(mountpoint)) != 0:
         print('mountpoint must be an empty folder')
         return
 
     if args.serial_device is None:
-        args.serial_device = autodiscover()
+        args.serial_device = flsrl.discover()
 
     if args.serial_device is None and args.ble_address is None:
         print('either serial_device or ble_address required')
@@ -61,29 +55,10 @@ def main():
         print('only one of serial_device/ble_address required')
         return
 
-    serial_device = None
-
-    def create_serial_device():
-        if args.serial_device is not None:
-            if not os.path.exists(args.serial_device):
-                print('serial device not an actual file')
-                parser.print_usage()
-                exit()
-
-            return create_physical_serial(args.serial_device, True)
-        if args.ble_address is not None:
-            def disconnect_handler(client):
-                print('disconnected')
-                sys.exit(0)
-
-            return create_ble_serial(args.ble_address, None)
-
-    serial_device = create_serial_device()
-
-    if serial_device is None:
-        print('failed creating serial device')
-
-    backend = FlipperZeroFileSysten(serial_device)
+    if not os.path.exists(args.serial_device):
+        print(args.serial_device,': no such file or directory')
+        parser.print_usage()
+        return
 
     fuse_started = True
     # fuse_thread = threading.Thread(target=fuse.FUSE, kwargs={'operations': backend, 'mountpoint': mountpoint, 'foreground': True})
@@ -94,31 +69,7 @@ def main():
     fuse_start()
     print('fuse stopped')
 
-    try:
-        serial_device.stop()
-        print('stopped bluetooth')
-    except AttributeError:
-        pass
-
-
-def create_physical_serial(file, is_cli):
-    s = serial.Serial(file, timeout=1)
-    s.baudrate = 230400
-    s.flushOutput()
-    s.flushInput()
-    if is_cli:
-        s.read_until(b'>: ')
-        s.write(b"start_rpc_session\r")
-        s.read_until(b'\n')
-    return s
-
-def create_ble_serial(address, disconnected_handler):
-    s = serial_ble.BLESerial(address, '19ed82ae-ed21-4c9d-4145-228e61fe0000', '19ed82ae-ed21-4c9d-4145-228e62fe0000')
-    print('connecting...')
-    s.start(disconnected_handler)
-    print('connected')
-
-    return bluetooth
+    flsrl.close()
 
 if __name__ == '__main__':
     logging.basicConfig(level=logging.INFO)