Hi. I am trying to log the accelerometer data in an activity session as soon as an app is opened and saved when exited. My code is below. However, when I open the .FIT file, there is no data for the accelerometer seen. A lot of empty cells or unknowns. I am unsure if my issue is in the logging of the accelerometer data or with converting the .FIT file. I hope someone can help at least direct me to where my issue is.
import Toybox.ActivityRecording;
import Toybox.Lang;
import Toybox.Math;
import Toybox.Sensor;
import Toybox.SensorLogging;
import Toybox.System;
import Toybox.WatchUi;
import Toybox.FitContributor;
//import Toybox.Fit;
//! Processes accelerometer data and counts pitches
class AccelDataV3Process {
private var _x as Array<Number> = [0] as Array<Number>;
private var _y as Array<Number> = [0] as Array<Number>;
private var _z as Array<Number> = [0] as Array<Number>;
private var _logger as SensorLogger?;
private var _session as Session?;
public function initialize() {
try {
_logger = new SensorLogging.SensorLogger({
:accelerometer => {:enabled => true},
});
_session = ActivityRecording.createSession({
:name => "AccelData",
:sport => Activity.SPORT_GENERIC,
:sensorLogger => _logger as SensorLogger,
});
} catch (e) {
System.println("Not working");
}
}
//! Callback to receive accel data
//! @param sensorData The Sensor Data object
public function accelCallback(sensorData as SensorData) as Void {
var accelData = sensorData.accelerometerData;
_x = accelData.x;
_y = accelData.y;
_z = accelData.z;
Toybox.System.println("Raw samples, X axis: " + _x);
Toybox.System.println("Raw samples, Y axis: " + _y);
Toybox.System.println("Raw samples, Z axis: " + _z);
Toybox.System.println("Number of Samples: " + getSamples().toString());
Toybox.System.println("Number of Seconds of logged data: " + getPeriod().toString());
Toybox.System.println("Power: " + accelData.power.toString());
}
}
//! Start app
public function onStart() as Void {
// initialize accelerometer
var options = {
:period => 4, //USED TO BE 1
:accelerometer => { :enabled => true, :sampleRate => 25, :includePower => true, :includePitch => true, :includeRoll => true },
};
try {
Sensor.registerSensorDataListener(method(:accelCallback), options);
var session = _session;
if (session != null) {
session.start();
System.println("Session Started!");
}
} catch (e) {
System.println(e.getErrorMessage());
}
}
//! Stop session and collecting data
public function onStop() as Void {
Sensor.unregisterSensorDataListener();
var session = _session;
if (session != null) {
session.stop();
session.save();
System.println("session was saved!");
}
}
//! Get the total number of logged samples
//! @return The number of samples
public function getSamples() as Number? {
var logger = _logger;
if (logger != null) {
return logger.getStats().sampleCount;
}
return null;
}
//! Get the total number of seconds of logged data
//! @return The number of seconds of logged data
public function getPeriod() as Number? {
var logger = _logger;
if (logger != null) {
return logger.getStats().samplePeriod;
}
return null;
}
}
