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

kmk/micropython/matrix.py

@@ -1,63 +0,0 @@
-import machine
-
-from kmk.common.abstract.matrix_scanner import AbstractMatrixScanner
-from kmk.common.consts import DiodeOrientation
-from kmk.common.event_defs import matrix_changed
-
-
-class MatrixScanner(AbstractMatrixScanner):
-    def __init__(self, cols, rows, active_layers, diode_orientation=DiodeOrientation.COLUMNS):
-        # A pin cannot be both a row and column, detect this by combining the
-        # two tuples into a set and validating that the length did not drop
-        #
-        # repr() hackery is because MicroPython Pin objects are not hashable.
-        # Technically we support passing either a string (hashable) or the
-        # Pin object directly here, so the hackaround is necessary.
-        unique_pins = {repr(c) for c in cols} | {repr(r) for r in rows}
-        if len(unique_pins) != len(cols) + len(rows):
-            raise ValueError('Cannot use a pin as both a column and row')
-
-        self.cols = [machine.Pin(pin) for pin in cols]
-        self.rows = [machine.Pin(pin) for pin in rows]
-        self.diode_orientation = diode_orientation
-        self.active_layers = active_layers
-        self.last_pressed_len = 0
-
-        if self.diode_orientation == DiodeOrientation.COLUMNS:
-            self.outputs = self.cols
-            self.inputs = self.rows
-        elif self.diode_orientation == DiodeOrientation.ROWS:
-            self.outputs = self.rows
-            self.inputs = self.cols
-        else:
-            raise ValueError('Invalid DiodeOrientation: {}'.format(
-                self.diode_orientation,
-            ))
-
-        for pin in self.outputs:
-            pin.init(machine.Pin.OUT)
-            pin.off()
-
-        for pin in self.inputs:
-            pin.init(machine.Pin.IN, machine.Pin.PULL_DOWN)
-            pin.off()
-
-    def scan_for_pressed(self):
-        pressed = []
-
-        for oidx, opin in enumerate(self.outputs):
-            opin.value(1)
-
-            for iidx, ipin in enumerate(self.inputs):
-                if ipin.value():
-                    pressed.append(
-                        (oidx, iidx) if self.diode_orientation == DiodeOrientation.ROWS else (iidx, oidx)  # noqa
-                    )
-
-            opin.value(0)
-
-        if len(pressed) != self.last_pressed_len:
-            self.last_pressed_len = len(pressed)
-            return matrix_changed(pressed)
-
-        return None  # The default, but for explicitness