Refactor MatrixScanner to use enhanced Pins abstraction; add DEBUG_ENABLED to SAMD51 boards

upy-unix-stubs/machine/__init__.py

@@ -5,9 +5,16 @@ class Anything:
     def __init__(self, name):
         self.name = name
 
+    def __call__(self, *args, **kwargs):
+        return self
+
     def __repr__(self):
         return 'Anything<{}>'.format(self.name)
 
+    @property
+    def value(self):
+        return None
+
 
 class Passthrough:
     def __getattr__(self, attr):
@@ -16,3 +23,9 @@ class Passthrough:
 
 class Pin:
     board = Passthrough()
+
+    def __call__(self, *args, **kwargs):
+        return self.board
+
+    def __getattr__(self, attr):
+        return getattr(self.board, attr)