Added GPIO web panel

platypush/backend/http/static/css/source/webpanel/plugins/gpio/index.scss

@@ -0,0 +1,39 @@
+@import 'common/vars';
+
+.gpio-container {
+    display: flex;
+    flex-direction: column;
+    height: 100%;
+    overflow: auto;
+
+    .refresh {
+        border-bottom: $default-border-2;
+        background: $default-bg-5;
+
+        button {
+            border: 0;
+            &:hover {
+                color: $default-hover-fg;
+            }
+        }
+    }
+
+    .pins {
+        .pin {
+            padding: 1em;
+            border-bottom: $default-border-2;
+            display: flex;
+            flex-direction: row;
+            align-items: center;
+
+            &:nth-child(even) {
+                background: $modal-header-bg;
+            }
+
+            &:hover {
+                background: $hover-bg;
+            }
+        }
+    }
+}
+

platypush/backend/http/static/js/plugins/gpio/index.js

@@ -0,0 +1,35 @@
+Vue.component('gpio', {
+    template: '#tmpl-gpio',
+    props: ['config'],
+
+    data: function() {
+        return {
+            pins: {},
+        };
+    },
+
+    methods: {
+        refresh: async function() {
+            const pins = await request('gpio.read_all');
+            this.pins = pins.reduce((pins, pin) => {
+                pins[pin.pin] = {
+                    name: pin.name,
+                    number: pin.pin,
+                    on: !!pin.value,
+                };
+
+                return pins;
+            }, {});
+        },
+
+        toggle: async function(pin) {
+            await request('gpio.write', {pin: pin, value: +(!this.pins[pin].on)});
+            this.refresh();
+        },
+    },
+
+    mounted: function() {
+        this.refresh();
+    },
+});
+

platypush/backend/http/templates/nav.html

@@ -5,6 +5,8 @@
         'camera.pi': 'fab fa-raspberry-pi',
         'camera.ir.mlx90640': 'fas fa-sun',
         'execute': 'fas fa-play',
+        'gpio': 'fas fa-plug',
+        'gpio.zeroborg': 'fas fa-robot',
         'light.hue': 'fa fa-lightbulb',
         'media.mplayer': 'fa fa-film',
         'media.mpv': 'fa fa-film',

platypush/backend/http/templates/plugins/gpio/index.html

@@ -0,0 +1,21 @@
+<script type="text/x-template" id="tmpl-gpio">
+    <div class="gpio-container">
+        <div class="refresh pull-right">
+            <button class="btn btn-default btn-refresh" title="Refresh">
+                <i class="fa fa-retweet">
+            </button>
+        </div>
+
+        <div class="pins">
+            <div class="pin"
+                    v-for="(pin, number) in pins"
+                    :key="number">
+                <div class="col-10 name" v-text="pin.name || number"></div>
+                <div class="col-2 toggle pull-right">
+                    <toggle-switch :value="pin.on" @toggled="toggle(number)"></toggle-switch>
+                </div>
+            </div>
+        </div>
+    </div>
+</script>
+

platypush/plugins/gpio/__init__.py

@@ -2,6 +2,7 @@
 .. moduleauthor:: Fabio Manganiello <blacklight86@gmail.com>
 """
 
+import threading
 from typing import Any, Optional, Dict, Union
 
 from platypush.plugins import Plugin, action
@@ -34,10 +35,23 @@ class GpioPlugin(Plugin):
 
         super().__init__(**kwargs)
         self.mode = self._get_mode(mode)
+        self._initialized = False
+        self._init_lock = threading.RLock()
+        self._initialized_pins = {}
         self.pins_by_name = pins if pins else {}
         self.pins_by_number = {number: name
                                for (name, number) in self.pins_by_name.items()}
 
+    def _init_board(self):
+        import RPi.GPIO as gpio
+
+        with self._init_lock:
+            if self._initialized:
+                return
+
+            gpio.setmode(self.mode)
+            self._initialized = True
+
     def _get_pin_number(self, pin):
         try:
             pin = int(str(pin))
@@ -58,15 +72,13 @@ class GpioPlugin(Plugin):
 
     @action
     def write(self, pin: Union[int, str], value: Union[int, bool],
-            name: Optional[str] = None, mode: Optional[str] = None) -> Dict[str, Any]:
+            name: Optional[str] = None) -> Dict[str, Any]:
         """
         Write a byte value to a pin.
 
         :param pin: PIN number or configured name
         :param name: Optional name for the written value (e.g. "temperature" or "humidity")
         :param value: Value to write
-        :param mode: If a PIN number is specified then you can override the default 'mode'
-            default parameter
 
         Response::
 
@@ -80,10 +92,14 @@ class GpioPlugin(Plugin):
 
         import RPi.GPIO as gpio
 
+        self._init_board()
         name = name or pin
         pin = self._get_pin_number(pin)
-        mode = self._get_mode(mode) if mode else self.mode
+
-        gpio.setmode(mode)
+        if pin not in self._initialized_pins or self._initialized_pins[pin] != gpio.OUT:
+            gpio.setup(pin, gpio.OUT)
+            self._initialized_pins[pin] = gpio.OUT
+
         gpio.setup(pin, gpio.OUT)
         gpio.output(pin, value)
 
@@ -95,15 +111,12 @@ class GpioPlugin(Plugin):
         }
 
     @action
-    def read(self, pin: Union[int, str], name: Optional[str] = None,
+    def read(self, pin: Union[int, str], name: Optional[str] = None) -> Dict[str, Any]:
-            mode: Optional[str] = None) -> Dict[str, Any]:
         """
         Reads a value from a PIN.
 
         :param pin: PIN number or configured name.
         :param name: Optional name for the read value (e.g. "temperature" or "humidity")
-        :param mode: If a PIN number is specified then you can override the default 'mode'
-            default parameter
 
         Response::
 
@@ -117,10 +130,14 @@ class GpioPlugin(Plugin):
 
         import RPi.GPIO as gpio
 
+        self._init_board()
         name = name or pin
         pin = self._get_pin_number(pin)
-        gpio.setmode(gpio.BCM)
+
-        gpio.setup(pin, gpio.IN)
+        if pin not in self._initialized_pins:
+            gpio.setup(pin, gpio.IN)
+            self._initialized_pins[pin] = gpio.IN
+
         val = gpio.input(pin)
 
         return {
@@ -154,8 +171,13 @@ class GpioPlugin(Plugin):
 
     @action
     def cleanup(self):
+        """
+        Cleanup the state of the GPIO and resets PIN values.
+        """
         import RPi.GPIO as gpio
         gpio.cleanup()
+        self._initialized_pins = {}
+        self._initialized = False
 
 
 # vim:sw=4:ts=4:et: