Handle button correctly. get_hex refactored as hex getter.

wiegand.py

@@ -56,7 +56,7 @@ class Decoder:
                                          self._cb)
             self.button_cb_h = self.pi.callback(self.button_pin,
                                                 pigpio.FALLING_EDGE,
-                                                self._cb)
+                                                self.button_cb)
 
     def cut_empty(self, item):
         if item[0:8] == "00000000":
@@ -64,7 +64,8 @@ class Decoder:
         else:
             return item
 
-    def get_hex(self):
+    @property
+    def hex(self):
         try:
             items = self.items
             if len(self.items) == 26:
@@ -128,7 +129,7 @@ class Decoder:
                         self.in_code = False
 
                         if self.bits >= 26:
-                            hex = self.get_hex()
+                            hex = self.hex
                             if hex:
                                 self.callback(hex)
                         else:
@@ -139,6 +140,7 @@ class Decoder:
 
     def button_cb(self,  gpio_pin, level, tick):
         print(f"button: gpio_pin:{gpio_pin}, level:{level}, tick:{tick}")
+        self.open_door()
 
     def open_door(self):
         self.pi.write(self.door_pin, 1)