Hello all,
I have the following setup: Master Brick, Accelerometer 2.0, Ethernet Master Extension and the RED brick.
For my project I am developing a web application for accelerometer data acquisition using Visual Studio ASP.NET Web Forms written in C#. I have successfully configured local area network, added TinkerForge C# bindings and my basic console app example works very well. However when I code in a Web Form my code doesn't get executed.
My web app consists of two drop down menus where you can choose frequency (ID="DropDownList2") and data rate (ID="DropDownList1") as well as input (ID="Time") in which user specifies duration of an acquisition. After the defined time x values needs to be printed in the text area (ID="textAr"). To start the acquisition a button Start is pressed which executes a method in code behind. To control time an AJAX timer and ScriptManager is used. All items are in html <form/> tag and runat server. My code behind looks like this:
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Dynamic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Tinkerforge;
namespace Prikupljanje_podataka
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
const string HOST = "192.168.150.3";
const int PORT = 8080;
const string UID = "Jej";
public IPConnection ipcon = new IPConnection();
public List<short> xos = new List<short>();
public List<short> yos = new List<short>();
public List<short> zos = new List<short>();
public void Start_Click(object sender, EventArgs e)
{
Prikupljanje();
int t1 = Convert.ToInt32(Time.Value);
int t2 = t1 * 1000;
Timer1.Enabled = true;
Timer1.Interval = t2;
}
public void Prikupljanje()
{
byte fr = Convert.ToByte(DropDownList2.SelectedValue);
byte rn = Convert.ToByte(DropDownList1.SelectedValue);
ipcon.Connect(HOST, PORT);
BrickletAccelerometerV2 a = new BrickletAccelerometerV2(UID, ipcon);
a.SetConfiguration(fr, rn);
a.GetConfiguration(out byte dataRate, out byte fullScale);
System.Diagnostics.Debug.WriteLine(Convert.ToString(dataRate));
System.Diagnostics.Debug.WriteLine(Convert.ToString(fullScale));
a.SetContinuousAccelerationConfiguration(true, true, true, Convert.ToByte(1));
a.ContinuousAcceleration16BitCallback += AccelerationCB;
ipcon.Disconnect();
}
public void AccelerationCB(BrickletAccelerometerV2 sender, short[] acceleration)
{
short[] akc = acceleration;
short[] x = { akc[0], akc[3], akc[6], akc[9], akc[12], akc[15], akc[18], akc[21], akc[24], akc[27] };
short[] y = { akc[1], akc[4], akc[7], akc[10], akc[13], akc[16], akc[19], akc[22], akc[25], akc[28] };
short[] z = { akc[2], akc[5], akc[8], akc[11], akc[14], akc[17], akc[20], akc[23], akc[26], akc[29] };
Debug.WriteLine(string.Join(",", x));
Debug.WriteLine("test");
xos.AddRange(x);
yos.AddRange(y);
yos.AddRange(z);
}
public void Timer1_Tick(object sender, EventArgs e)
{
Timer1.Enabled = false;
textAr.Value += "Timer works";
textAr.Value += string.Join(",", xos);
Debug.WriteLine("test2");
}
}
}
The weird thing is that System.Diagnostics.Debug.WriteLine(Convert.ToString(dataRate)); and
System.Diagnostics.Debug.WriteLine(Convert.ToString(fullScale)); return the value of user defined frequency and data range, but Debug.WriteLine(string.Join(",", x)); and Debug.WriteLine("test") in void AccelerationCB don't return anything which means that public void AccelerationCB(BrickletAccelerometerV2 sender, short[] acceleration){} doesn't get executed. The last Debug line "Debug.WriteLine("test2");" is returning a string "test2" after user defined time.
My question is, am I doing something wrong with the acceleration callback, is a.ContinuousAcceleration16BitCallback += AccelerationCB; correctly written and assigned, does my code look wrong? When I run the App using ISS Explorer there are no errors or exceptions, on a button click the timer starts but nothing happens after user defined time, only "Timer works" is printed in the textarea.
Sorry for the long post I can't wrap my head around this, if needed I can provide code from a C# console app or the front end html. Thanks in advance!
