diff --git a/.gitignore b/.gitignore
index 0dbf2f2..fcf0f30 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+test/
 # ---> Python
 # Byte-compiled / optimized / DLL files
 __pycache__/
@@ -15,7 +16,7 @@ dist/
 downloads/
 eggs/
 .eggs/
-lib/
+# lib/
 lib64/
 parts/
 sdist/
diff --git a/controller_documentation/20231208_94d01600a8b0273f_440585560660_75100356767715_published_mp4_264_hd_taobao [20231208_94d01600a8b0273f_440585560660_75100356767715_published_mp4_264_hd_taobao].mp4 b/controller_documentation/20231208_94d01600a8b0273f_440585560660_75100356767715_published_mp4_264_hd_taobao [20231208_94d01600a8b0273f_440585560660_75100356767715_published_mp4_264_hd_taobao].mp4
new file mode 100644
index 0000000..43bfad3
Binary files /dev/null and b/controller_documentation/20231208_94d01600a8b0273f_440585560660_75100356767715_published_mp4_264_hd_taobao [20231208_94d01600a8b0273f_440585560660_75100356767715_published_mp4_264_hd_taobao].mp4 differ
diff --git a/main.py b/lib/OCer.py
similarity index 88%
rename from main.py
rename to lib/OCer.py
index c614e93..fac91d5 100644
--- a/main.py
+++ b/lib/OCer.py
@@ -53,11 +53,6 @@ class caser:
             if self.device_hwid in port.hwid:
                 logger.info(f"Found the correct port: {port.device}")
                 return str(port.device)
-            
-    def set_controller_capacity(self, capacity: int):
-        '''Устанавливает количество доступных замков'''
-
-
 
     def set_port_device(self, port_device=None):
         '''Устанавливает com port'''
@@ -117,12 +112,30 @@ class caser:
         if confirm:
             try:
                 return self.send_command(0, self.default_consts[True], 
-                                self.default_consts["MANIPULATE_HEADER"],
+                                self.default_consts["READ_HEADER"],
                                 bytes_count=self.controller_capacity)
             except Exception as error:
                 return str(error)
         else:
             return 1
+   
+    def set_controller_capacity(self, capacity=0) -> str:
+        '''Устанавливает количество доступных замков'''
+        if capacity != 0:
+            self.controller_capacity = capacity
+            return self.controller_capacity
+        else:
+            # тут должно быть автоматическое определение кол-ва замков на контроллере
+            # try:
+            #     return self.send_command(0, self.default_consts[True], 
+            #                     self.default_consts["MANIPULATE_HEADER"],
+            #                     bytes_count=self.controller_capacity)
+            # except Exception as error:
+            #     return str(error)
+            pass
+
+    def watchdog(self):
+        pass
 
 if __name__ == "__main__":
     #consts&confs
diff --git a/lib/lomka.py b/lib/lomka.py
new file mode 100644
index 0000000..ff89c2d
--- /dev/null
+++ b/lib/lomka.py
@@ -0,0 +1,42 @@
+class BCCCalculator:
+    """
+    Класс для работы с BCC
+    """
+    
+    @staticmethod
+    def xor_bcc(data):
+        """XOR BCC"""
+        if isinstance(data, str):
+            data = data.encode('utf-8')
+        elif isinstance(data, list):
+            data = bytes(data)
+        
+        bcc = 0
+        for byte in data:
+            bcc ^= byte
+        return bcc
+    
+    @staticmethod
+    def sum_bcc(data):
+        """Суммирование BCC"""
+        if isinstance(data, str):
+            data = data.encode('utf-8')
+        elif isinstance(data, list):
+            data = bytes(data)
+        
+        total = sum(data)
+        return total & 0xFF
+    
+    @staticmethod
+    def verify_bcc(data_with_bcc):
+        """
+        Проверка BCC в данных
+        """
+        if len(data_with_bcc) < 2:
+            return False
+        
+        data = data_with_bcc[:-1]
+        expected_bcc = data_with_bcc[-1]
+        calculated_bcc = BCCCalculator.xor_bcc(data)
+        
+        return expected_bcc == calculated_bcc
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..f6c1a1f
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+pyserial