hp20x: Initial implementation

This module implements support for the hp20x family of high accuracy
barometers.  It was developed on the Grove Barometer (High Accuracy)
based on the HP206C.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/c++/CMakeLists.txt

@@ -125,6 +125,7 @@ add_executable (grovescam-example grovescam.cxx)
 add_executable (m24lr64e-example m24lr64e.cxx)
 add_executable (grovecircularled-example grovecircularled.cxx)
 add_executable (rgbringcoder-example rgbringcoder.cxx)
+add_executable (hp20x-example hp20x.cxx)
 
 include_directories (${PROJECT_SOURCE_DIR}/src/hmc5883l)
 include_directories (${PROJECT_SOURCE_DIR}/src/grove)
@@ -228,6 +229,7 @@ include_directories (${PROJECT_SOURCE_DIR}/src/grovescam)
 include_directories (${PROJECT_SOURCE_DIR}/src/m24lr64e)
 include_directories (${PROJECT_SOURCE_DIR}/src/grovecircularled)
 include_directories (${PROJECT_SOURCE_DIR}/src/rgbringcoder)
+include_directories (${PROJECT_SOURCE_DIR}/src/hp20x)
 
 target_link_libraries (hmc5883l-example hmc5883l ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (groveled-example grove ${CMAKE_THREAD_LIBS_INIT})
@@ -354,3 +356,4 @@ target_link_libraries (grovescam-example grovescam ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (m24lr64e-example m24lr64e ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (grovecircularled-example grovecircularled ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (rgbringcoder-example rgbringcoder ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries (hp20x-example hp20x ${CMAKE_THREAD_LIBS_INIT})

examples/c++/hp20x.cxx

@@ -0,0 +1,70 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2015 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <unistd.h>
+#include <signal.h>
+#include <iostream>
+#include "hp20x.h"
+
+using namespace std;
+using namespace upm;
+
+int shouldRun = true;
+
+void sig_handler(int signo)
+{
+  if (signo == SIGINT)
+    shouldRun = false;
+}
+
+int main(int argc, char **argv)
+{
+  signal(SIGINT, sig_handler);
+
+//! [Interesting]
+  // Instantiate an HP20X on default I2C bus and address
+
+  upm::HP20X *bar = new upm::HP20X();
+
+  // Initialize the device with default values
+  bar->init();
+
+  // Output data every second until interrupted
+  while (shouldRun)
+    {
+      printf("Temperature: %f Celcius\n", bar->getTemperature());
+      printf("Pressure:    %f Millibars\n", bar->getPressure());
+      printf("Altitude:    %f Meters\n", bar->getAltitude());
+
+      printf("\n");
+
+      sleep(1);
+    }
+//! [Interesting]
+
+  cout << "Exiting..." << endl;
+
+  delete bar;
+  return 0;
+}

examples/javascript/hp20x.js

@@ -0,0 +1,55 @@
+/*jslint node:true, vars:true, bitwise:true, unparam:true */
+/*jshint unused:true */
+
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2015 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+var barometerObj = require('jsupm_hp20x');
+
+// Instantiate an HP20X on default I2C bus and address
+var bar = new barometerObj.HP20X();
+
+// Initialize the device with default values
+bar.init();
+
+// Output data every second until interrupted
+setInterval(function()
+{
+    console.log("Temperature: " + bar.getTemperature() + " Celcius");
+    console.log("Pressure:    " + bar.getPressure() + " Millibars");
+    console.log("Altitude:    " + bar.getAltitude() + " Meters");
+    console.log("");
+}, 1000);
+
+// exit on ^C
+process.on('SIGINT', function()
+{
+    bar = null;
+    barometerObj.cleanUp();
+    barometerObj = null;
+    console.log("Exiting.");
+    process.exit(0);
+});
+

examples/python/hp20x.py

@@ -0,0 +1,54 @@
+#!/usr/bin/python
+# Author: Jon Trulson <jtrulson@ics.com>
+# Copyright (c) 2015 Intel Corporation.
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+import time, sys, signal, atexit
+import pyupm_hp20x as barometerObj
+
+## Exit handlers ##
+# This stops python from printing a stacktrace when you hit control-C
+def SIGINTHandler(signum, frame):
+	raise SystemExit
+
+# This function lets you run code on exit,
+# including functions from ringCoder
+def exitHandler():
+	print "Exiting"
+	sys.exit(0)
+
+# Register exit handlers
+atexit.register(exitHandler)
+signal.signal(signal.SIGINT, SIGINTHandler)
+
+# Instantiate an HP20X on default I2C bus and address
+bar = barometerObj.HP20X()
+
+# Initialize the device with default values
+bar.init()
+
+while(1):
+    print "Temperature:", bar.getTemperature(), "Celcius"
+    print "Pressure:   ", bar.getPressure(), "Millibars"
+    print "Altitude:   ", bar.getAltitude(), "Meters"
+    print 
+    time.sleep(1)
+