Index: leahi_dialin/utils/abstract_classes.py
===================================================================
diff -u -r0bc2d3976315c12417c992717621a0284bbedef4 -r0593f17d4a3a35989edbc1a576da868b5e971a0b
--- leahi_dialin/utils/abstract_classes.py	(.../abstract_classes.py)	(revision 0bc2d3976315c12417c992717621a0284bbedef4)
+++ leahi_dialin/utils/abstract_classes.py	(.../abstract_classes.py)	(revision 0593f17d4a3a35989edbc1a576da868b5e971a0b)
@@ -206,7 +206,7 @@
             print('done\n')
 
  
-    def crc16(data: bytes) -> int:
+    def crc16(self, data: bytes) -> int:
         """
         Calculate a 16bit CRC for a payload.