If I just open /dev/rfcomm0 as a normal file and sends an "AT" , I'm able to read out "OK" from the file?
Yes.
I have created a simple application to try this, but it does not seem to work.
using System; using System.IO;
namespace serialchattest {
class serialchattest {
static string device = "/dev/rfcomm0";static void Main() {
using (FileStream fs = new FileStream(device, FileMode.Open, FileAccess.ReadWrite)) {
using (StreamReader sr = new StreamReader(fs)) {
using (StreamWriter sw = new StreamWriter(fs)) {
sw.WriteLine("AT");
Console.Write(sr.ReadLine());
}
}
}
}
}
}
Result:
Unhandled Exception: System.IO.IOException: Win32 IO returned ERROR_SEEK. Path: /dev/rfcomm0
in <0x00083> System.IO.FileStream:FlushBuffer ()
in <0x0004f> (wrapper remoting-invoke-with-check) System.IO.FileStream:FlushBuffer ()
in <0x00043> System.IO.FileStream:Flush ()
in <0x00061> System.IO.StreamWriter:Flush ()
in <0x00025> System.IO.StreamWriter:Dispose (bool)
in <0x00010> System.IO.TextWriter:System.IDisposable.Dispose ()
in <0x000f3> serialchattest.serialchattest:Main ()
Unhandled Exception: System.IO.IOException: Win32 IO returned ERROR_SEEK. Path: /dev/rfcomm0
in <0x00083> System.IO.FileStream:FlushBuffer ()
in <0x0004f> (wrapper remoting-invoke-with-check) System.IO.FileStream:FlushBuffer ()
in <0x00029> System.IO.FileStream:Dispose (bool)
in <0x00013> System.IO.FileStream:Close ()
in <0x0001e> System.IO.StreamReader:Dispose (bool)
in <0x00010> System.IO.TextReader:System.IDisposable.Dispose ()
in <0x00119> serialchattest.serialchattest:Main ()
Unhandled Exception: System.IO.IOException: Win32 IO returned ERROR_SEEK. Path: /dev/rfcomm0
in <0x00083> System.IO.FileStream:FlushBuffer ()
in <0x0004f> (wrapper remoting-invoke-with-check) System.IO.FileStream:FlushBuffer ()
in <0x00029> System.IO.FileStream:Dispose (bool)
in <0x00013> System.IO.FileStream:Close ()
in <0x0000b> System.IO.Stream:System.IDisposable.Dispose ()
in <0x0013f> serialchattest.serialchattest:Main ()
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