Merge pull request #771 from mahenzon/feature/Fix-ODROID_M1-board-detection

[Adafruit_Blinka-hackapet.git] / src / adafruit_blinka / microcontroller / generic_linux / libgpiod_pin.py

diff --git a/src/adafruit_blinka/microcontroller/generic_linux/libgpiod_pin.py b/src/adafruit_blinka/microcontroller/generic_linux/libgpiod_pin.py
index 4ffa5c1725da19bf4e2d049e02940f7da1e527fd..d49552484a06c6cae1e3124f61237226ca7c8674 100644 (file)
--- a/src/adafruit_blinka/microcontroller/generic_linux/libgpiod_pin.py
+++ b/src/adafruit_blinka/microcontroller/generic_linux/libgpiod_pin.py
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
 """A Pin class for use with libgpiod."""
 try:
     import gpiod
@@ -5,86 +8,15 @@ except ImportError:
     raise ImportError(
         "libgpiod Python bindings not found, please install and try again! See "
         "https://github.com/adafruit/Raspberry-Pi-Installer-Scripts/blob/master/libgpiod.sh"
-    )
-
-
-class Pin:
-    """Pins dont exist in CPython so...lets make our own!"""
-
-    IN = 0
-    OUT = 1
-    LOW = 0
-    HIGH = 1
-    PULL_NONE = 0
-    PULL_UP = 1
-    PULL_DOWN = 2
-    _CONSUMER = "adafruit_blinka"
-
-    id = None
-    _value = LOW
-    _mode = IN
-
-    def __init__(self, pin_id):
-        self.id = pin_id
-        if isinstance(pin_id, tuple):
-            self._num = int(pin_id[1])
-            self._chip = gpiod.Chip(str(pin_id[0]), gpiod.Chip.OPEN_BY_NUMBER)
-        else:
-            self._num = int(pin_id)
-            self._chip = gpiod.Chip("gpiochip0", gpiod.Chip.OPEN_BY_NAME)
-        self._line = None
-
-    def __repr__(self):
-        return str(self.id)
-
-    def __eq__(self, other):
-        return self.id == other
-
-    def init(self, mode=IN, pull=None):
-        """Initialize the Pin"""
-        if not self._line:
-            self._line = self._chip.get_line(int(self._num))
-            # print("init line: ", self.id, self._line)
-
-        if mode is not None:
-            if mode == self.IN:
-                flags = 0
-                if pull is not None:
-                    if pull == self.PULL_UP:
-                        raise NotImplementedError(
-                            "Internal pullups not supported in libgpiod, "
-                            "use physical resistor instead!"
-                        )
-                    if pull == self.PULL_DOWN:
-                        raise NotImplementedError(
-                            "Internal pulldowns not supported in libgpiod, "
-                            "use physical resistor instead!"
-                        )
-                    raise RuntimeError("Invalid pull for pin: %s" % self.id)
-
-                self._mode = self.IN
-                self._line.release()
-                self._line.request(
-                    consumer=self._CONSUMER, type=gpiod.LINE_REQ_DIR_IN, flags=flags
-                )
-
-            elif mode == self.OUT:
-                if pull is not None:
-                    raise RuntimeError("Cannot set pull resistor on output")
-                self._mode = self.OUT
-                self._line.release()
-                self._line.request(consumer=self._CONSUMER, type=gpiod.LINE_REQ_DIR_OUT)
-
-            else:
-                raise RuntimeError("Invalid mode for pin: %s" % self.id)
-
-    def value(self, val=None):
-        """Set or return the Pin Value"""
-        if val is None:
-            return self._line.get_value()
-
-        if val in (self.LOW, self.HIGH):
-            self._value = val
-            self._line.set_value(val)
-            return None
-        raise RuntimeError("Invalid value for pin")
+    ) from ImportError
+
+# Versions 1.5.4 and earlier have no __version__ attribute
+if hasattr(gpiod, "__version__"):
+    version = gpiod.__version__
+else:
+    version = "1.x"
+
+if version.startswith("1."):
+    from .libgpiod.libgpiod_pin_1_x import Pin  # pylint: disable=unused-import
+else:
+    from .libgpiod.libgpiod_pin_2_x import Pin  # pylint: disable=unused-import