From dffec694626b8fc0a70eb97368a1bdc440b5bdc4 Mon Sep 17 00:00:00 2001
From: Robo Print <roboprint@users.noreply.github.com>
Date: Sat, 27 Jun 2015 23:27:35 +0200
Subject: [PATCH] Non-blocking Dallas sensors temperature conversion => lower
 power usage

---
 .../DallasTemperatureSensor.ino                      | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/libraries/MySensors/examples/DallasTemperatureSensor/DallasTemperatureSensor.ino b/libraries/MySensors/examples/DallasTemperatureSensor/DallasTemperatureSensor.ino
index 3c6c2c0..ade4edd 100644
--- a/libraries/MySensors/examples/DallasTemperatureSensor/DallasTemperatureSensor.ino
+++ b/libraries/MySensors/examples/DallasTemperatureSensor/DallasTemperatureSensor.ino
@@ -21,6 +21,8 @@ void setup()
 { 
   // Startup OneWire 
   sensors.begin();
+  // requestTemperatures() will not block current thread
+  sensors.setWaitForConversion(false);
 
   // Startup and initialize MySensors library. Set callback for incoming messages. 
   gw.begin(); 
@@ -44,7 +46,12 @@ void loop()
   gw.process(); 
 
   // Fetch temperatures from Dallas sensors
-  sensors.requestTemperatures(); 
+  sensors.requestTemperatures();
+
+  // query conversion time and sleep until conversion completed
+  int16_t conversionTime = sensors.millisToWaitForConversion(sensors.getResolution());
+  // sleep() call can be replaced by wait() call if node need to process incoming messages (or if node is repeater)
+  gw.sleep(conversionTime);
 
   // Read temperatures and send them to controller 
   for (int i=0; i<numSensors && i<MAX_ATTACHED_DS18B20; i++) {
@@ -62,6 +69,3 @@ void loop()
   }
   gw.sleep(SLEEP_TIME);
 }
-
-
-