Adding Pimoroni Keybow and Keybow 2040

kmk/scanners/__init__.py

@@ -3,6 +3,9 @@ class Scanner:
     Base class for scanners.
     '''
 
+    def __init__(self):
+        self.coord_mapping = None
+
     def scan_for_changes(self):
         '''
         Scan for key events and return a key report if an event exists.

kmk/scanners/native_keypad_scanner.py

@@ -15,7 +15,6 @@ class NativeKeypadScanner(Scanner):
     def __init__(self, pin_map, kp):
         self.pin_map = pin_map
         self.keypad = kp
-        # self.coord_mapping = [ic(row, col) for (row, col) in self.pin_map]
         self.coord_mapping = list(range(len(pin_map)))
 
         self.curr_event = keypad.Event()