groveehr: Initial implementation

This module implements support for the Grove Ear-clip heart rate
sensor.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: Sarah Knepper <sarah.knepper@intel.com>

examples/CMakeLists.txt

@@ -58,6 +58,7 @@ add_executable (ds1307-example ds1307.cxx)
 add_executable (a110x-example a110x.cxx)
 add_executable (gp2y0a21yk-example gp2y0a21yk.cxx)
 add_executable (grovemoisture-example grovemoisture.cxx)
+add_executable (groveehr-example groveehr.cxx)
 
 include_directories (${PROJECT_SOURCE_DIR}/src/hmc5883l)
 include_directories (${PROJECT_SOURCE_DIR}/src/grove)
@@ -103,6 +104,7 @@ include_directories (${PROJECT_SOURCE_DIR}/src/ds1307)
 include_directories (${PROJECT_SOURCE_DIR}/src/a110x)
 include_directories (${PROJECT_SOURCE_DIR}/src/gp2y0a21yk)
 include_directories (${PROJECT_SOURCE_DIR}/src/grovemoisture)
+include_directories (${PROJECT_SOURCE_DIR}/src/groveehr)
 
 target_link_libraries (hmc5883l-example hmc5883l ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (groveled-example grove ${CMAKE_THREAD_LIBS_INIT})
@@ -164,3 +166,4 @@ target_link_libraries (ds1307-example ds1307 ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (a110x-example a110x ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (gp2y0a21yk-example gp2y0a21yk ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (grovemoisture-example grovemoisture ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries (groveehr-example groveehr ${CMAKE_THREAD_LIBS_INIT})

examples/groveehr.cxx

@@ -0,0 +1,78 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2014 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 <iostream>
+#include <signal.h>
+#include "groveehr.h"
+
+using namespace std;
+
+int shouldRun = true;
+
+void sig_handler(int signo)
+{
+  if (signo == SIGINT)
+    shouldRun = false;
+}
+
+
+int main()
+{
+  signal(SIGINT, sig_handler);
+
+//! [Interesting]
+  // Instantiate a Grove Ear-clip Heart Rate sensor on digital pin D2
+  upm::GroveEHR* heart = new upm::GroveEHR(2);
+  
+  // set the beat counter to 0, init the clock and start counting beats
+  heart->clearBeatCounter();
+  heart->initClock();
+  heart->startBeatCounter();
+
+  while (shouldRun)
+    {
+      // we grab these just for display purposes in this example
+      uint32_t millis = heart->getMillis();
+      uint32_t beats = heart->beatCounter();
+
+      // heartRate() requires that at least 5 seconds pass before
+      // returning anything other than 0
+      int hr = heart->heartRate();
+
+      // output milliseconds passed, beat count, and computed heart rate
+      cout << "Millis: " << millis << " Beats: " << beats;
+      cout << " Heart Rate: " << hr << endl;
+
+      sleep(1);
+    }
+
+  heart->stopBeatCounter();
+//! [Interesting]
+
+  cout << "Exiting..." << endl;
+
+  delete heart;
+  return 0;
+}

examples/javascript/groveehr.js

@@ -0,0 +1,60 @@
+/*jslint node:true, vars:true, bitwise:true, unparam:true */
+/*jshint unused:true */
+/*global */
+/*
+* Author: Zion Orent <zorent@ics.com>
+* Copyright (c) 2014 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.
+*/
+
+// Load heart rate sensor module
+var heartRateSensor = require('jsupm_groveehr');
+// Instantiate a Grove Ear-clip Heart Rate sensor on digital pin D2
+var myHeartRateSensor = new heartRateSensor.GroveEHR(2);
+
+// set the beat counter to 0, init the clock and start counting beats
+myHeartRateSensor.clearBeatCounter();
+myHeartRateSensor.initClock();
+myHeartRateSensor.startBeatCounter();
+
+setInterval(readHeartRate, 1000);
+
+function readHeartRate()
+{
+	// we grab these just for display purposes in this example
+	var millis = myHeartRateSensor.getMillis();
+	var beats = myHeartRateSensor.beatCounter();
+
+	// heartRate() requires that at least 5 seconds pass before
+	// returning anything other than 0
+	var hr = myHeartRateSensor.heartRate();
+
+	// output milliseconds passed, beat count, and computed heart rate
+	console.log("Millis: " + millis + " Beats: " + beats +
+	            " Heart Rate: " + hr);
+}
+
+// Print message when exiting
+process.on('SIGINT', function()
+{
+	console.log("Exiting...");
+	process.exit(0);
+});