Undefined return values from readings

[OmarHallab]

Dear Sandeep,

I am currently facing an issue with retrieving Sensortag values. I am working on a raspberry pi 2 with node js v 4.4.2 .

When i start my node application I am able to discover the sensortags in range, but when it comes to function callbacks i get undefined results from the readings.

I tried tracing the application to see why the syncing is not happening:

sensorTag.enableIrTemperature(function (error) { if (error) { console.log("Sensor enabling issue: %s...", error); return; }

then i found out that :

Sensor enabling issue: Error: service uuid f000aa0004514000b000000000000000 not found!

Can you please help me with this?

Best regards, Omar

[OmarHallab]

Dear Sandeep,

I have made sure that the devices are 100% working and that all the service UUID's are up & running.

Though I still don't get why i can't seem to return values from the sensors, keep getting error that the certain "*** uuid is not found! "

Any thoughts on this?

Thanks Omar

[sandeepmistry]

@OmarHallab please share the code you are running. It sounds like you are missing a call to sensorTag.connectAndSetUp().

Also, have you tried running test.js?

[OmarHallab]

Dear Sandeep,

Test.js works fine & I am able to retreive data from the sensor. I have shared the code below,

---

var SensorTag = require('sensortag'); // sensortag library var Async = require('async');

var Protocol = require('azure-iot-device-amqp').Amqp; var Client = require('azure-iot-device').Client; var ConnectionString = require('azure-iot-device').ConnectionString; var Message = require('azure-iot-device').Message;

var connectionString = 'HostName=XXX.azure-devices.net;DeviceId=home-meteo-device;SharedAccessKey=YYY'; var deviceId = ConnectionString.parse(connectionString).DeviceId;

var client = Client.fromConnectionString(connectionString, Protocol);

SensorTag.discoverAll(function (sensorTag) { console.log("Connecting to %s...", sensorTag.id);

sensorTag.on('disconnect', function() { console.log("Disconnected from %s!", sensorTag.id); process.exit(0); });

sensorTag.connectAndSetUp(function (error) { 
    console.log("Connected to %s...", sensorTag.id);

    sensorTag.enableIrTemperature(function (error) {
        if (error)
        {
            console.log("Sensor enabling issue: %s...", error);
            return;
        } 

        sensorTag.readIrTemperature(function (error, objectTemperature, ambientTemperature) {
            if (error)
            {
                console.log("IR temperature error: %s...", error);
                return;
            }

            console.log(ambientTemperature);
        }); 
    });
});

});

---

Please get back to me on this :) Thank you, Omar

[sandeepmistry]

@OmarHallab which model SensorTag are you using? Does the connectAndSetUp callback arg have an error?

[sandeepmistry]

This seems ok on my Raspberry Pi 3 with the CC2650 sensor tag model:

var SensorTag = require('./index'); // sensortag library

SensorTag.discoverAll(function (sensorTag) {
    console.log("Connecting to %s...", sensorTag.id);

    sensorTag.on('disconnect', function() {
        console.log("Disconnected from %s!", sensorTag.id);
        process.exit(0);
    });

    sensorTag.connectAndSetUp(function (error) {
        console.log("Connected to %s...", sensorTag.id);

        sensorTag.enableIrTemperature(function (error) {
            if (error)
            {
                console.log("Sensor enabling issue: %s...", error);
                return;
            }

            sensorTag.readIrTemperature(function (error, objectTemperature, ambientTemperature) {
                if (error)
                {
                    console.log("IR temperature error: %s...", error);
                    return;
                }

                console.log(ambientTemperature);
            });
        });
    });
});

[sandeepmistry]

I'm closing this due to lack of activity, please re-open with requested info if you are still interested.

[akshayghadage]

Hi Sandeep, I am facing same issue. Newly installed raspbian with Rpi Zero, Newly bought SensorTag (Rev 1.5.1, FW version- 1.42. Any suggestions??

[rzumbuehl]

Hi Sandeep,

same issue here. FW version = 1.30, HW rev. = 1.2/1.3

test.js results in:

discovered: {"id":"247189e73701","type":"cc2650"}
connectAndSetUp
readDeviceName
    error = Error: **characteristic uuid 2a00 not found in service uuid 1800**!
    device name = undefined
readSystemId
    system id = undefined
readSerialNumber
    serial number = undefined
readFirmwareRevision
    firmware revision = undefined
readHardwareRevision
    hardware revision = undefined
readSoftwareRevision
    software revision = undefined
readManufacturerName
    manufacturer name = undefined
enableIrTemperature
(node:3516) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): **Error: service uuid f000aa0004514000b000000000000000 not found**!

Any ideas?