max30100: Initial commit - MAX30100 pulse oximeter

* c/c++ source
    * java/js/python/c/c++ examples
    * Doc image (png)
    * Tested on Intel Edison
    * TODO: Tuning for SpO2 reading

Signed-off-by: Noel Eck <noel.eck@intel.com>

examples/javascript/max30100.js

@@ -0,0 +1,57 @@
+/*
+ * Author: Noel Eck <noel.eck@intel.com>
+ * Copyright (c) 2016 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 sensorObj = require('jsupm_max30100');
+
+// Instantiate a MAX30100 instance using bus 0
+var sensor = new sensorObj.MAX30100(0);
+
+console.log('Oximeter sensor example...');
+
+// Read the temperature and version
+console.log ('Temperature: %d C', sensor.temperature());
+console.log ('Version: 0x%s', sensor.version().toString(16));
+
+// Set high-res (50 Hz, 16-bit)
+sensor.high_res_enable(true);
+
+// Set to sample SpO2
+sensor.mode(sensorObj.MAX30100_MODE_SPO2_EN);
+
+// Read individual samples
+for (var i = 0; i < 10; i++)
+{
+    var val = sensor.sample();
+    console.log('Single value IR: %d R: %d ', val.IR, val.R);
+}
+
+// exit on ^C
+process.on('SIGINT', function()
+{
+    sensor = null;
+    sensorObj.cleanUp();
+    sensorObj = null;
+    console.log('Exiting.');
+    process.exit(0);
+});