From 58b0b4839363bcbb94141d30ec318c6b752146de Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <blacklight86@gmail.com>
Date: Fri, 20 Dec 2019 21:40:57 +0100
Subject: [PATCH] Added gpio.cleanup at the end of get_measurement in distance
 sensor plugin

---
 .../plugins/gpio/sensor/distance/__init__.py  | 35 ++++++++++---------
 1 file changed, 19 insertions(+), 16 deletions(-)

diff --git a/platypush/plugins/gpio/sensor/distance/__init__.py b/platypush/plugins/gpio/sensor/distance/__init__.py
index 1096eac06..48ddf5534 100644
--- a/platypush/plugins/gpio/sensor/distance/__init__.py
+++ b/platypush/plugins/gpio/sensor/distance/__init__.py
@@ -24,33 +24,21 @@ class GpioSensorDistancePlugin(GpioPlugin, GpioSensorPlugin):
         :type echo_pin: int
         """
 
-        import RPi.GPIO as gpio
         GpioPlugin.__init__(self, *args, **kwargs)
-
         self.trigger_pin = trigger_pin
         self.echo_pin = echo_pin
         self._is_probing = False
 
+    def _init_gpio(self):
+        import RPi.GPIO as gpio
         gpio.setmode(self.mode)
         gpio.setup(self.trigger_pin, gpio.OUT)
         gpio.setup(self.echo_pin, gpio.IN)
-
-        self.logger.info('Resetting trigger sensor on GPIO pin {}'.format(self.trigger_pin))
         gpio.output(self.trigger_pin, False)
 
-
-    @action
-    def get_measurement(self):
-        """
-        Extends :func:`.GpioSensorPlugin.get_measurement`
-
-        :returns: Distance measurement as a scalar (in mm):
-        """
-
+    def _get_data(self):
         import RPi.GPIO as gpio
-        gpio.setmode(gpio.BCM)
-        gpio.setup(self.trigger_pin, gpio.OUT)
-        gpio.setup(self.echo_pin, gpio.IN)
+        self._init_gpio()
 
         gpio.output(self.trigger_pin, True)
         time.sleep(0.00001)  # 1 us pulse to trigger echo measurement
@@ -88,4 +76,19 @@ class GpioSensorDistancePlugin(GpioPlugin, GpioSensorPlugin):
         return round(pulse_duration * 171500.0, 2)
 
 
+    @action
+    def get_measurement(self):
+        """
+        Extends :func:`.GpioSensorPlugin.get_measurement`
+
+        :returns: Distance measurement as a scalar (in mm):
+        """
+        import RPi.GPIO as gpio
+
+        try:
+            return self._get_data()
+        finally:
+            gpio.cleanup()
+
+
 # vim:sw=4:ts=4:et: