Craig Cmehil
Published © Apache-2.0

TI SensorTag to SAP Cloud Platform IoT Services

Connect your TI SensorTag to the IoT Services of the SAP Cloud Platform.

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TI SensorTag to SAP Cloud Platform IoT Services

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Code

Code snippet #1

Plain text
/* 	sensorTag IR Temperature sensor example
*  Craig Cmehil, SAP SE (c) 2015
*/

/* Choose the proper HTTP or HTTPS, SAP Cloud Platformrequires HTTPS */
var http = require('https');

var SensorTag = require('sensortag');
var lv_temp;
var lv_humid;
var lv_deviceid = "";
var DEBUG_VALUE = true;
var xtimestamp;
var date = new Date();
var time = date.getTime ();

// SAP Cloud Platform connection details
var portIoT = 443;
var pathIoT = '/com.sap.iotservices.mms/v1/api/http/data/';
var hostIoT = 'iotmmsXXXXXXXXXXtrial.hanatrial.ondemand.com';
var authStrIoT = 'Bearer XXXXXXXXXXXX';
var deviceId = 'XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXX';
var messageTypeID = 'XXXXXXXXXXXX';

var options = {
    host: hostIoT,
  port: portIoT,
    path: pathIoT + deviceId,
    agent: false,
    headers: {
       'Authorization': authStrIoT,
       'Content-Type': 'application/json;charset=utf-8',
	 'Accept': '*/*'
    },
    method: 'POST',     
};

/***************************************************************/
/* Coding to access TI SensorTag and values of various sensors */
/***************************************************************/

console.log("If not yet activated, then press the power button.");
SensorTag.discover(function(tag) {
tag.on('disconnect', function() {
	console.log('disconnected!');
	process.exit(0);
});

function connectExecute() {
	console.log('Connect Device and Execute Sensors');
	tag.connectAndSetUp(enableSensors);
}

function enableSensors() {
	/* Read device specifics */
	tag.readDeviceName(function(error, deviceName) {
		console.log('Device Name = ' + deviceName);
	});
	tag.readSystemId(function(error, systemId) {
		console.log('System ID = ' + systemId);
		lv_deviceid = systemId;
	});
	tag.readSerialNumber(function(error, serialNumber) {
		console.log('Serial Number = ' + serialNumber);
	});
	tag.readFirmwareRevision(function(error, firmwareRevision) {
		console.log('Firmware Rev = ' + firmwareRevision);
	});
	tag.readHardwareRevision(function(error, hardwareRevision) {
		console.log('Hardware Rev = ' + hardwareRevision);
	});
	tag.readHardwareRevision(function(error, softwareRevision) {
		console.log('Software Revision = ' + softwareRevision);
	});
	tag.readManufacturerName(function(error, manufacturerName) {
		console.log('Manufacturer = ' + manufacturerName);
	});
	/* Enable Sensors */
	console.log("Enabling sensors:");
	console.log('\tenableIRTemperatureSensor');
	tag.enableIrTemperature(notifyMe);
	console.log('\tenableHumidity');
	tag.enableHumidity(notifyMe);
	console.log("*********************************************");
	console.log(" To stop press both buttons on the SensorTag ");
	console.log("*********************************************");
}

function notifyMe() {
	tag.notifySimpleKey(listenForButton);
	setImmediate(function loop () {
		tag.readIrTemperature(function(error, objectTemperature, ambientTemperature){
      		lv_obj = objectTemperature.toFixed(1);
      		lv_ambient = ambientTemperature.toFixed(1);
    		});
		tag.readHumidity(function(error, temperature, humidity) {
			lv_temp = temperature.toFixed(1);
			lv_humid = humidity.toFixed(1);
		});
		if(DEBUG_VALUE)
			console.log("Sending Data: " + lv_deviceid + " " + lv_temp + " " + lv_humid);
		setSensorData(lv_temp, lv_humid);
		setTimeout(loop, 10000);
	});
  }

function listenForButton() {
	tag.on('simpleKeyChange', function(left, right) {
		if (left && right) {
			tag.disconnect();
		}
   });
}

connectExecute();
});

/******************************************************************/
/* FUNCTION to get Temperature from the Sensor & update into HANA */
/******************************************************************/
function setSensorData(lv_temp,lv_humid){
date = new Date();
  time =date.getTime();

var data = {
	"mode":"sync",
	"messageType": messageTypeID,
	"messages": [{
		"timestamp": time,
		"temperature": lv_temp,
		"humidity": lv_humid
	}]
  };
var strData = JSON.stringify(data);
if(DEBUG_VALUE)
	console.log("Data: " + strData);
if(strData.length > 46){
	if(DEBUG_VALUE)
		console.log("Sending Data to server");
	/* Process HTTP or HTTPS request */
	options.agent = new http.Agent(options);
	var request_callback = function(response) {
		var body = '';
		response.on('data', function (data) {
			body += data;
		});
		response.on('end', function () {
			if(DEBUG_VALUE)
				console.log("REQUEST END:", response.statusCode);
		});
		response.on('error', function(e) {
			console.error(e);
		});    
	}
	var request = http.request(options, request_callback);
	request.on('error', function(e) {
		console.error(e);
	});
	request.write(strData);
	request.end();
}else{
	if(DEBUG_VALUE)
		console.log("Incomplete Data");
}
}

Code snippet #2

Plain text
/* 	sensorTag IR Temperature sensor example
*  Craig Cmehil, SAP SE (c) 2015
*/

/* Choose the proper HTTP or HTTPS, SAP Cloud Platformrequires HTTPS */
var http = require('https');

var SensorTag = require('sensortag');
var lv_temp;
var lv_humid;
var lv_deviceid = "";
var DEBUG_VALUE = true;
var xtimestamp;
var date = new Date();
var time = date.getTime ();

// SAP Cloud Platform connection details
var portIoT = 443;
var pathIoT = '/com.sap.iotservices.mms/v1/api/http/data/';
var hostIoT = 'iotmmsXXXXXXXXXXtrial.hanatrial.ondemand.com';
var authStrIoT = 'Bearer XXXXXXXXXXXX';
var deviceId = 'XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXX';
var messageTypeID = 'XXXXXXXXXXXX';

var options = {
    host: hostIoT,
  port: portIoT,
    path: pathIoT + deviceId,
    agent: false,
    headers: {
       'Authorization': authStrIoT,
       'Content-Type': 'application/json;charset=utf-8',
	 'Accept': '*/*'
    },
    method: 'POST',     
};

/***************************************************************/
/* Coding to access TI SensorTag and values of various sensors */
/***************************************************************/

console.log("If not yet activated, then press the power button.");
SensorTag.discover(function(tag) {
tag.on('disconnect', function() {
	console.log('disconnected!');
	process.exit(0);
});

function connectExecute() {
	console.log('Connect Device and Execute Sensors');
	tag.connectAndSetUp(enableSensors);
}

function enableSensors() {
	/* Read device specifics */
	tag.readDeviceName(function(error, deviceName) {
		console.log('Device Name = ' + deviceName);
	});
	tag.readSystemId(function(error, systemId) {
		console.log('System ID = ' + systemId);
		lv_deviceid = systemId;
	});
	tag.readSerialNumber(function(error, serialNumber) {
		console.log('Serial Number = ' + serialNumber);
	});
	tag.readFirmwareRevision(function(error, firmwareRevision) {
		console.log('Firmware Rev = ' + firmwareRevision);
	});
	tag.readHardwareRevision(function(error, hardwareRevision) {
		console.log('Hardware Rev = ' + hardwareRevision);
	});
	tag.readHardwareRevision(function(error, softwareRevision) {
		console.log('Software Revision = ' + softwareRevision);
	});
	tag.readManufacturerName(function(error, manufacturerName) {
		console.log('Manufacturer = ' + manufacturerName);
	});
	/* Enable Sensors */
	console.log("Enabling sensors:");
	console.log('\tenableIRTemperatureSensor');
	tag.enableIrTemperature(notifyMe);
	console.log('\tenableHumidity');
	tag.enableHumidity(notifyMe);
	console.log("*********************************************");
	console.log(" To stop press both buttons on the SensorTag ");
	console.log("*********************************************");
}

function notifyMe() {
	tag.notifySimpleKey(listenForButton);
	setImmediate(function loop () {
		tag.readIrTemperature(function(error, objectTemperature, ambientTemperature){
      		lv_obj = objectTemperature.toFixed(1);
      		lv_ambient = ambientTemperature.toFixed(1);
    		});
		tag.readHumidity(function(error, temperature, humidity) {
			lv_temp = temperature.toFixed(1);
			lv_humid = humidity.toFixed(1);
		});
		if(DEBUG_VALUE)
			console.log("Sending Data: " + lv_deviceid + " " + lv_temp + " " + lv_humid);
		setSensorData(lv_temp, lv_humid);
		setTimeout(loop, 10000);
	});
  }

function listenForButton() {
	tag.on('simpleKeyChange', function(left, right) {
		if (left && right) {
			tag.disconnect();
		}
   });
}

connectExecute();
});

/******************************************************************/
/* FUNCTION to get Temperature from the Sensor & update into HANA */
/******************************************************************/
function setSensorData(lv_temp,lv_humid){
date = new Date();
  time =date.getTime();

var data = {
	"mode":"sync",
	"messageType": messageTypeID,
	"messages": [{
		"timestamp": time,
		"temperature": lv_temp,
		"humidity": lv_humid
	}]
  };
var strData = JSON.stringify(data);
if(DEBUG_VALUE)
	console.log("Data: " + strData);
if(strData.length > 46){
	if(DEBUG_VALUE)
		console.log("Sending Data to server");
	/* Process HTTP or HTTPS request */
	options.agent = new http.Agent(options);
	var request_callback = function(response) {
		var body = '';
		response.on('data', function (data) {
			body += data;
		});
		response.on('end', function () {
			if(DEBUG_VALUE)
				console.log("REQUEST END:", response.statusCode);
		});
		response.on('error', function(e) {
			console.error(e);
		});    
	}
	var request = http.request(options, request_callback);
	request.on('error', function(e) {
		console.error(e);
	});
	request.write(strData);
	request.end();
}else{
	if(DEBUG_VALUE)
		console.log("Incomplete Data");
}
}

Credits

Craig Cmehil

Craig Cmehil

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