Hello,
i wrote a small programm to messuare the temperature und the humid of the air with my panda II board,
using System;
using Microsoft.SPOT;
using GHIElectronics.NETMF.Hardware;
using GHIElectronics.NETMF.IO;
using Microsoft.SPOT.Hardware;
using GHIElectronics.NETMF.FEZ;
using System.Threading;
using System.IO;
using Microsoft.SPOT.IO;
namespace MFConsoleApplication1
{
public class Program
{
public static void Main()
{
AnalogIn temp, feucht;
double x, y;
int n=0;
temp = new AnalogIn((AnalogIn.Pin)FEZ_Pin.AnalogIn.An1);
temp.SetLinearScale(0, 5000);
feucht = new AnalogIn((AnalogIn.Pin)FEZ_Pin.AnalogIn.An3);
feucht.SetLinearScale(0, 5000);
//DateTime datum = new DateTime(2012, 07, 25, 11, 46, 11);
//DateTime datum = DateTime.Now;
//Utility.SetLocalTime(datum);
if (PersistentStorage.DetectSDCard())
{
Debug.Print("Sd Karte erkannt");
}
else
{
Debug.Print("nicht erkannt");
}
PersistentStorage sd;
sd = new PersistentStorage("SD");
sd.MountFileSystem();
string rootDirectory = VolumeInfo.GetVolumes()[0].RootDirectory;
FileStream stream = new FileStream(rootDirectory + @ "\werte.txt", FileMode.Create);
StreamWriter writer = new StreamWriter(stream);
while (true)
{
n++;
x = temp.Read();
x = x / 14.601;
string stringt;
stringt = x.ToString();
stringt = stringt.Substring(0, 5);
y = feucht.Read();
y = y / 61.79;
string stringf;
stringf = y.ToString();
stringf = stringf.Substring(0, 5);
Debug.Print(DateTime.Now.ToString());
Debug.Print(n.ToString());
Debug.Print("Temperatur: " + stringt + " °C");
Debug.Print("Rel. Luftfeuchte: "+stringf+" %");
Debug.Print("________________________________________");
writer.WriteLine("Temperatur: " + stringt + " °C");
/*
textFile.WriteLine("Temperatur: " + stringt + " °C");
textFile.WriteLine("Rel. Luftfeuchte: " + stringf + " %");
textFile.WriteLine("________________________________________");
textFile.Close();
*/
Thread.Sleep(2000);
}
}
}
}
Sd card has the format FAT.
The problem is that no file is created on the sd card.
What is my fault?
if theres anything you dont understand, i will try to translate (german).
greetings
kevin
What andre said. You need to flush your streamwriter…
See the flush and close methods here: StreamWriter Methods | Microsoft Learn
hi, thanks for the response,
i changed my code into
using System;
using Microsoft.SPOT;
using GHIElectronics.NETMF.Hardware;
using GHIElectronics.NETMF.IO;
using Microsoft.SPOT.Hardware;
using GHIElectronics.NETMF.FEZ;
using System.Threading;
using System.IO;
using Microsoft.SPOT.IO;
namespace MFConsoleApplication1
{
public class Program
{
public static void Main()
{
AnalogIn temp, feucht;
double x, y;
int n=0;
temp = new AnalogIn((AnalogIn.Pin)FEZ_Pin.AnalogIn.An1);
temp.SetLinearScale(0, 5000);
feucht = new AnalogIn((AnalogIn.Pin)FEZ_Pin.AnalogIn.An3);
feucht.SetLinearScale(0, 5000);
//DateTime datum = new DateTime(2012, 07, 25, 11, 46, 11);
//DateTime datum = DateTime.Now;
//Utility.SetLocalTime(datum);
if (PersistentStorage.DetectSDCard())
{
Debug.Print("Sd Karte erkannt");
}
else
{
Debug.Print("nicht erkannt");
}
PersistentStorage sd;
sd = new PersistentStorage("SD");
sd.MountFileSystem();
string rootDirectory = VolumeInfo.GetVolumes()[0].RootDirectory;
Debug.Print(rootDirectory);
while (PersistentStorage.DetectSDCard())
{
n++;
FileStream stream = new FileStream(rootDirectory + @ "\werte.txt", FileMode.Create);
StreamWriter writer = new StreamWriter(stream);
x = temp.Read();
x = x / 14.601;
string stringt;
stringt = x.ToString();
stringt = stringt.Substring(0, 5);
y = feucht.Read();
y = y / 61.79;
string stringf;
stringf = y.ToString();
stringf = stringf.Substring(0, 5);
Debug.Print(DateTime.Now.ToString());
Debug.Print(n.ToString());
Debug.Print("Temperatur: " + stringt + " °C");
Debug.Print("Rel. Luftfeuchte: "+stringf+" %");
Debug.Print("________________________________________");
writer.WriteLine("Temperatur: " + stringt + " °C");
/*
textFile.WriteLine("Temperatur: " + stringt + " °C");
textFile.WriteLine("Rel. Luftfeuchte: " + stringf + " %");
textFile.WriteLine("________________________________________");
textFile.Close();
*/
writer.Flush();
writer.Close();
Thread.Sleep(2000);
}
}
}
}
but still doesent work :-(.
i think i found the fault. i changed paarts in the programm and wondered why the output dosent changes.
[quote]Incrementally deploying assemblies to device
Deploying assemblies for a total size of 173920 bytes
Assemblies not successfully deployed to device.
Deployment to the device was not successful.[/quote]
but i can ping the divice via MFDeploy
You have only ~148KB available for your application on Panda II.
You need to clean-up your project and remove anything that you don’t need.
Please show a screenshot of your solution tree with all the nodes open. (It is a “Solution View” inside Visual Studio that shows all files/resource/references etc. that are included in your project)
i removed the gadeteer assambly an it works, but not right :-(.
i made some changes to the code:
using System;
using Microsoft.SPOT;
using GHIElectronics.NETMF.Hardware;
using GHIElectronics.NETMF.IO;
using Microsoft.SPOT.Hardware;
using GHIElectronics.NETMF.FEZ;
using System.Threading;
using System.IO;
using Microsoft.SPOT.IO;
namespace MFConsoleApplication1
{
public class Program
{
public static void Main()
{
AnalogIn temp, feucht;
double x, y;
int n=0;
bool h;
temp = new AnalogIn((AnalogIn.Pin)FEZ_Pin.AnalogIn.An1);
temp.SetLinearScale(0, 5000);
feucht = new AnalogIn((AnalogIn.Pin)FEZ_Pin.AnalogIn.An3);
feucht.SetLinearScale(0, 5000);
//DateTime datum = new DateTime(2012, 07, 25, 11, 46, 11);
//DateTime datum = DateTime.Now;
//Utility.SetLocalTime(datum);
PersistentStorage sd;
sd = new PersistentStorage("SD");
sd.MountFileSystem();
string rootDirectory = VolumeInfo.GetVolumes()[0].RootDirectory;
Debug.Print(rootDirectory);
h = PersistentStorage.DetectSDCard();
if(h)
{
Debug.Print("SD detected");
}
Thread.Sleep(2000);
while (true)
{
n++;
FileStream stream = new FileStream(rootDirectory + @ "\values.txt", FileMode.Create);
StreamWriter writer = new StreamWriter(stream);
x = temp.Read();
x = x / 14.601;
string stringt;
stringt = x.ToString();
stringt = stringt.Substring(0, 5);
y = feucht.Read();
y = y / 61.79;
string stringf;
stringf = y.ToString();
stringf = stringf.Substring(0, 5);
Debug.Print(DateTime.Now.ToString());
Debug.Print(n.ToString());
Debug.Print("Temperatur: " + stringt + " °C");
Debug.Print("Rel. Luftfeuchte: "+stringf+" %");
Debug.Print("________________________________________");
writer.WriteLine(n);
writer.WriteLine("Temperatur: " + stringt + " °C");
writer.WriteLine("Rel. Luftfeuchte: " + stringf + " %");
writer.WriteLine("________________________________");
writer.Flush();
writer.Close();
Thread.Sleep(2000);
}
}
}
}
sd card is deteced and a file is created but the programm writes only 4 lines.
e.g.
if you want to accumulate all lines of your readings in the file you need to use FileMode.Append.
Avoid using file extensions is probably what you Have to do. I has the same issue and solved it using single filenames such as ipcfg instead of ipcfg.txt for exemple…
Jeff answered the question for the 4 lines, file is overwritten every time
filemode append works, thank you guys 
