udpate protobufs for environmental measurement preferences

mesh.proto

@@ -897,6 +897,34 @@ message RadioConfig {
     */
     bool store_forward_plugin_enabled = 136;
     uint32 store_forward_plugin_records = 137;
+
+    /**
+    Preferences for the EnvironmentalMeasurement Plugin
+    FIXME - Move this out of UserPreferences and into a section for plugin configuration.
+    */
+    /*
+    * Enable/Disable the environmental measurement plugin
+    */
+    bool environmental_measurement_plugin_enabled = 140;
+    /* 
+    * Sometimes sensor reads can fail.  If this happens, we 
+    * will retry a configurable number of attempts
+    * Each attempt will be delayed by the minimum 
+    * required refresh rate for that sensor
+    */
+    uint32 environmental_measurement_plugin_read_error_count_threshold = 141;
+    /*
+    * Interval in seconds of how often we should try to send our 
+    * measurements to the mesh
+    */
+    uint32 environmental_measurement_plugin_update_interval = 142;
+    /* Sometimes we can end up with more than read_error_count_threshold
+    * failures.  In this case, we will stop trying to read from the sensor
+    * for a while.  Wait this long until trying to read from the sensor again
+    */
+    uint32 environmental_measurement_plugin_recovery_interval = 143;
+
+
   }
 
   UserPreferences preferences = 1;