Feature/multiple gpio inputs (#59)

* Add gpio 23 as input

* Enable GPIO

Author: dbaldwin

dexi/launch/dexi.launch.xml

@@ -3,6 +3,7 @@
     <let name="droneblocks" value="false" />
     <let name="sitl" value="false" />
     <let name="led" value="true" />
+    <let name="gpio" value="true" />
     <let name="offboard" value="true" />
 
     <!-- These can be passed in from command line -->

dexi_py/launch/gpio.launch.py

@@ -28,6 +28,15 @@ def generate_launch_description():
             {'pin': 22}
          ]
       ),
+      Node(
+         package='dexi_py',
+         namespace='dexi',
+         executable='gpio_reader',
+         name='gpio_input_23',
+         parameters = [
+            {'pin': 23}
+         ]
+      ),
       Node(
          package='dexi_py',
          namespace='dexi',