X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/blobdiff_plain/a05866abcb60fe7b3d2198ed58e7f1deb82f8983..03548b64a8d7b407b4ae6464c5ffc551be8fc0be:/src/microcontroller/_pin.py

diff --git a/src/microcontroller/_pin.py b/src/microcontroller/_pin.py
new file mode 100644
index 0000000..0077cb0
--- /dev/null
+++ b/src/microcontroller/_pin.py
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+# SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+from adafruit_blinka import Enum
+import microcontroller.pin
+
+class Pin(Enum):
+    """
+    Identifies an IO pin on the microcontroller.
+
+    They are fixed by the hardware so they cannot be constructed on demand. Instead, use board or
+    microcontroller.pin to reference the desired pin.
+    """
+
+    def __init__(self, pin_id):
+        """Identifier for pin, referencing platform-specific pin id"""
+        self.id = pin_id
+
+    def __repr__(self):
+        # pylint: disable=import-outside-toplevel, cyclic-import
+        import board
+
+        for key in dir(board):
+            if getattr(board, key) is self:
+                return "board.{}".format(key)
+        # pylint: enable=import-outside-toplevel, cyclic-import
+
+        for key in dir(microcontroller.pin):
+            if getattr(microcontroller.pin, key) is self:
+                return "microcontroller.pin.{}".format(key)
+        return repr(self)
+