Initial commit: Display Startup message on LCD screen

octoprint_hd44780/__init__.py

@@ -0,0 +1,106 @@
+# coding=utf-8
+
+import future
+
+__author__ = "Felix Kunsmann <felix@kunsmann.eu>"
+__license__ = "GNU Affero General Public License http://www.gnu.org/licenses/agpl.html"
+__copyright__ = "Copyright (C) 2017 Felix Kunsmann - Released under terms of the AGPLv3 License"
+
+import octoprint.plugin
+
+import RPi.GPIO as GPIO
+
+from RPLCD import CharLCD
+from RPLCD import CursorMode
+from RPLCD import cursor
+
+class LCD_HD44780(octoprint.plugin.StartupPlugin,
+                    octoprint.plugin.SettingsPlugin):
+    def __init__(self):
+        self._pin_to_gpio_rev1 = [-1, -1, -1, 0, -1, 1, -1, 4, 14, -1, 15, 17, 18, 21, -1, 22, 23, -1, 24, 10, -1, 9, 25, 11, 8, -1, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ]
+        self._pin_to_gpio_rev2 = [-1, -1, -1, 2, -1, 3, -1, 4, 14, -1, 15, 17, 18, 27, -1, 22, 23, -1, 24, 10, -1, 9, 25, 11, 8, -1, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 ]
+        self._pin_to_gpio_rev3 = [-1, -1, -1, 2, -1, 3, -1, 4, 14, -1, 15, 17, 18, 27, -1, 22, 23, -1, 24, 10, -1, 9, 25, 11, 8, -1, 7, -1, -1, 5, -1, 6, 12, 13, -1, 19, 16, 26, 20, -1, 21 ]
+        self._configuredGPIOPins = []
+
+        self.pin_rs = 15
+        self.pin_rw = None
+        self.pin_e  = 16
+        self.pin_d4 = 21
+        self.pin_d5 = 22
+        self.pin_d6 = 23
+        self.pin_d7 = 24
+
+        self.cols = 20
+        self.rows = 4
+
+        self._lcd = None
+
+    def on_settings_initialized(self):
+        self._initialize_lcd()
+
+    def _gpio_board_to_bcm(self, pin):
+        if GPIO.RPI_REVISION == 1:
+            pin_to_gpio = self._pin_to_gpio_rev1
+        elif GPIO.RPI_REVISION == 2:
+            pin_to_gpio = self._pin_to_gpio_rev2
+        else:
+            pin_to_gpio = self._pin_to_gpio_rev3
+
+        return pin_to_gpio[pin]
+
+    def _gpio_get_pin(self, pin):
+        if GPIO.getmode() == GPIO.BOARD:
+            return pin
+        elif GPIO.getmode() == GPIO.BCM:
+            return self._gpio_board_to_bcm(pin)
+        else:
+            return 0
+
+    def _initialize_lcd(self):
+        self._logger.info("Running RPi.GPIO version %s" % GPIO.VERSION)
+        if GPIO.VERSION < "0.6":
+            self._logger.error("RPi.GPIO version 0.6.0 or greater required.")
+
+        GPIO.setwarnings(False)
+
+        for pin in self._configuredGPIOPins:
+            self._logger.debug("Cleaning up pin %s" % pin)
+            try:
+                GPIO.cleanup(self._gpio_get_pin(pin))
+            except (RuntimeError, ValueError) as e:
+                self._logger.error(e)
+        self._configuredGPIOPins = []
+
+        if GPIO.getmode() is None:
+            GPIO.setmode(GPIO.BOARD)
+
+        pin_rs = self._gpio_get_pin(self.pin_rs)
+
+        if self.pin_rw is not None:
+            pin_rw = self._gpio_get_pin(self.pin_rw)
+        else:
+            pin_rw = None
+
+        pin_e  = self._gpio_get_pin(self.pin_e)
+        pin_d4 = self._gpio_get_pin(self.pin_d4)
+        pin_d5 = self._gpio_get_pin(self.pin_d5)
+        pin_d6 = self._gpio_get_pin(self.pin_d6)
+        pin_d7 = self._gpio_get_pin(self.pin_d7)
+
+        self._lcd = CharLCD(pin_rs=pin_rs, pin_rw=pin_rw, pin_e=pin_e, pins_data=[pin_d4, pin_d5, pin_d6, pin_d7],
+                            numbering_mode=GPIO.getmode(), cols=self.cols, rows=self.rows)
+
+        self._lcd.cursor_mode = CursorMode.hide
+        self._lcd.clear()
+        self._lcd.write_string('Octoprint-LCD-HD44780\n\rVersion: 0.1')
+
+__plugin_name__ = "LCD: HD44780-compatible"
+
+def __plugin_load__():
+    global __plugin_implementation__
+    __plugin_implementation__ = LCD_HD44780()
+
+    global __plugin_hooks__
+    __plugin_hooks__ = {
+#        "octoprint.plugin.softwareupdate.check_config": __plugin_implementation__.get_update_information
+    }