ds18b20: rewrite C++ to wrap C, add FTI, update examples

Previously, the C++ and C versions of this driver were separate.  Now
the C++ implementation wraps the C implementation.

In addition, the C++ init() function has been deprecated.  It
currently does nothing, and examples have been modified to remove it's
calls.  This function will be removed in a separate release.

The examples have been further modified to update all detected devices
and print their respective temperatures, instead of only reporting the
on the first device detected.

Signed-off-by: Jon Trulson <jtrulson@ics.com>

examples/c++/ds18b20.cxx

@@ -1,6 +1,6 @@
 /*
  * Author: Jon Trulson <jtrulson@ics.com>
- * Copyright (c) 2016 Intel Corporation.
+ * Copyright (c) 2016-2017 Intel Corporation.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -49,9 +49,6 @@ int main(int argc, char **argv)
   // Instantiate an DS18B20 instance using the default values (uart 0)
   upm::DS18B20 sensor;
 
-  // locate and setup our devices
-  sensor.init();
-
   cout << "Found " << sensor.devicesFound() << " device(s)" << endl;
   cout << endl;
 
@@ -59,18 +56,26 @@ int main(int argc, char **argv)
   if (!sensor.devicesFound())
     return 1;
 
-  // update and print available values every second
+  // update and print available values every 2 seconds
   while (shouldRun)
     {
-      // update our values for the first sensor
-      sensor.update(0);
+      // update our values for all of the detected sensors
+      sensor.update(-1);
 
-      // we show both C and F for temperature for the first sensor
-      cout << "Temperature: " << sensor.getTemperature(0)
-           << " C / " << sensor.getTemperature(0, true) << " F"
-           << endl;
+      // we show both C and F for temperature for the sensors
+      int i;
+      for (i=0; i<sensor.devicesFound(); i++)
+      {
+          cout << "Device "
+               << i
+               << ": Temperature: "
+               << sensor.getTemperature(i)
+               << " C / " << sensor.getTemperature(i, true) << " F"
+               << endl;
+      }
+      cout << endl;
 
-      sleep(1);
+      sleep(2);
     }
 
   cout << "Exiting..." << endl;

examples/c/ds18b20.c

@@ -56,7 +56,7 @@ int main(int argc, char **argv)
 
     printf("Found %d device(s)\n\n", ds18b20_devices_found(sensor));
 
-    // update and print available values every second
+    // update and print available values every 2 seconds
     while (shouldRun)
     {
         // update our values for all sensors

examples/javascript/ds18b20.js

@@ -1,6 +1,6 @@
 /*
  * Author: Jon Trulson <jtrulson@ics.com>
- * Copyright (c) 2016 Intel Corporation.
+ * Copyright (c) 2016-2017 Intel Corporation.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -33,9 +33,6 @@ console.log("Initializing...");
 // Instantiate an DS18B20 instance using the default values (uart 0)
 var sensor = new sensorObj.DS18B20(0);
 
-// locate and setup our devices
-sensor.init();
-
 console.log("Found", sensor.devicesFound(), "device(s)");
 console.log("");
 
@@ -44,17 +41,21 @@ if (!sensor.devicesFound())
     process.exit(1);
 }
 
-// update and print available values every second
+// update and print available values every 2 seconds
 setInterval(function()
 {
-    // update our values for the first sensor
-    sensor.update(0);
+    // update our values for all of the detected sensors
+    sensor.update(-1);
 
-    // we show both C and F for temperature for the first sensor
-    console.log("Temperature:", sensor.getTemperature(0),
-                "C /", sensor.getTemperature(0, true), "F");
+    // we show both C and F for temperature for the sensors
+    for (var i=0; i<sensor.devicesFound(); i++)
+    {
+        console.log("Device:", i, "Temperature:", sensor.getTemperature(i),
+                    "C /", sensor.getTemperature(i, true), "F");
+    }
 
-}, 1000);
+    console.log();
+}, 2000);
 
 
 process.on('SIGINT', function()

examples/python/ds18b20.py

@@ -1,6 +1,6 @@
 #!/usr/bin/python
 # Author: Jon Trulson <jtrulson@ics.com>
-# Copyright (c) 2016 Intel Corporation.
+# Copyright (c) 2016-2017 Intel Corporation.
 #
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
@@ -45,25 +45,26 @@ def main():
     # Instantiate an DS18B20 instance using the default values (uart 0)
     sensor = sensorObj.DS18B20(0)
 
-    # locate and setup our devices
-    sensor.init()
-
     print("Found", sensor.devicesFound(), "device(s)")
     print()
 
     if (not sensor.devicesFound()):
         sys.exit(1);
 
-    # update and print available values every second
+    # update and print available values every 2 seconds
     while (1):
-        # update our values for the first sensor
-        sensor.update(0)
+        # update our values for all of the detected sensors
+        sensor.update(-1)
 
-        # we show both C and F for temperature for the first sensor
-        print("Temperature:", sensor.getTemperature(0), "C /", end=' ')
-        print(sensor.getTemperature(0, True), "F")
+        # we show both C and F for temperature for the sensors
+        for i in range(sensor.devicesFound()):
+            print("Device:", i, end=' ')
+            print("Temperature:", sensor.getTemperature(i), "C /", end=' ')
+            print(sensor.getTemperature(i, True), "F")
 
-        time.sleep(1)
+
+        print()
+        time.sleep(2)
 
 if __name__ == '__main__':
     main()