add orangepi zero gpio support

mqttany/gpio/boards/__init__.py

@@ -32,7 +32,7 @@
 
 import logger
 from gpio.boards.base import Board
-from gpio.boards import rpi, odroid
+from gpio.boards import rpi, odroid, opi
 
 
 class Unknown(Board):
@@ -51,4 +51,5 @@ def get_board() -> Board:
     all_boards = {GENERIC_LINUX_PC: Generic}
     all_boards.update(rpi.SUPPORTED_BOARDS)
     all_boards.update(odroid.SUPPORTED_BOARDS)
+    all_boards.update(opi.SUPPORTED_BOARDS)
     return all_boards.get(Detector().board.id, Unknown)()

mqttany/gpio/boards/opi.py

@@ -0,0 +1,77 @@
+"""
+**************************
+Core GPIO Orange Pi Boards
+**************************
+
+:Author: Michael Murton
+"""
+# Copyright (c) 2019-2020 MQTTany contributors
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+__all__ = ["SUPPORTED_BOARDS"]
+
+from adafruit_platformdetect.constants.boards import ORANGE_PI_ZERO
+
+from gpio.common import Mode, PinMode, PinBias, PinAlternate
+from gpio.boards.base import Board
+
+DIGITAL = PinMode.DIGITAL
+P_UP = PinBias.PULL_UP
+
+
+class OPiZero(Board):
+    def __init__(self):
+        self._id = ORANGE_PI_ZERO
+
+        # chip, line, soc, board, wpi, modes, biases, alts
+        self._add_pin(0, 0, 0, 13, 7, DIGITAL, P_UP)
+        self._add_pin(0, 1, 1, 11, 5, DIGITAL, P_UP)
+        self._add_pin(0, 2, 2, 22, 13, DIGITAL, P_UP)
+        self._add_pin(0, 3, 3, 15, 8, DIGITAL, P_UP)
+        self._add_pin(0, 6, 6, 7, 2, DIGITAL, P_UP)
+        self._add_pin(0, 7, 7, 12, 6, DIGITAL, P_UP)
+        self._add_pin(0, 10, 10, 26, 16, DIGITAL, P_UP)
+        self._add_pin(0, 11, 11, 5, 1, DIGITAL, P_UP, PinAlternate.I2C0_SCL)
+        self._add_pin(0, 12, 12, 3, 0, DIGITAL, P_UP, PinAlternate.I2C0_SDA)
+        self._add_pin(0, 13, 13, 24, 15, DIGITAL, P_UP)
+        self._add_pin(0, 14, 14, 23, 14, DIGITAL, P_UP)
+        self._add_pin(0, 15, 15, 19, 11, DIGITAL, P_UP)
+        self._add_pin(0, 16, 16, 21, 12, DIGITAL, P_UP)
+        self._add_pin(0, 18, 18, 18, 10, DIGITAL, P_UP, PinAlternate.I2C1_SCL)
+        self._add_pin(0, 19, 19, 16, 9, DIGITAL, P_UP, PinAlternate.I2C1_SDA)
+        self._add_pin(0, 198, 198, 8, 3, DIGITAL, P_UP)
+        self._add_pin(0, 199, 199, 10, 4, DIGITAL, P_UP)
+
+        # detect wire1 pin (there must be a better way?)
+        # defined in /boot/armbianEnv.txt as
+        # param_w1_pin=PAxx
+        try:
+            with open("/boot/armbianEnv.txt") as fd:
+                lines = fd.readlines()
+        except IOError:
+            pass
+        else:
+            for line in lines:
+                if "param_w1_pin" in line:
+                    pin = int(line.strip().split("=")[-1][2:])
+                    self._pin_lookup[Mode.SOC][pin].lock(None, module="system.1wire")
+
+
+SUPPORTED_BOARDS = {ORANGE_PI_ZERO: OPiZero}