A basic 2x2 matrix that can auto-flash to a Feather with a compatible bootloader

kmk/common/consts.py

@@ -0,0 +1,9 @@
+class DiodeOrientation:
+    '''
+    Orientation of diodes on handwired boards. You can think of:
+    COLUMNS = vertical
+    ROWS = horizontal
+    '''
+
+    COLUMNS = 0
+    ROWS = 1

kmk/common/keymap.py

@@ -0,0 +1,18 @@
+class Keymap:
+    def __init__(self, map):
+        self.map = map
+        self.state = [
+            [False for _ in row]
+            for row in self.map
+        ]
+
+    def parse(self, matrix):
+        for ridx, row in enumerate(matrix):
+            for cidx, col in enumerate(row):
+                if col != self.state[ridx][cidx]:
+                    print('{}: {}'.format(
+                        'KEYDOWN' if col else 'KEYUP',
+                        self.map[ridx][cidx],
+                    ))
+
+        self.state = matrix