blutooth serial communcation with nadroid device

Can you try this code,

usingSystem;
usingSystem.Linq;
usingSystem.IO;
usingAndroid.App;
usingAndroid.Content;
usingAndroid.Runtime;
usingAndroid.Views;
usingAndroid.Widget;
usingAndroid.OS;
usingAndroid.Bluetooth;
//...
publicclassMainActivity:Activity
{
privateBluetoothSocketsocket;
protectedoverridevoidOnCreate(Bundlebundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Main);
Buttonbutton=FindViewById
EditTexttext=FindViewById(Resource.Id.editText);
button.Click+=delegate
{
BluetoothAdapteradapter=BluetoothAdapter.DefaultAdapter;
Actionfinish=newAction(asyncdelegate
{
if(socket==null)
{
BluetoothDevicedevice=(frombdinadapter.BondedDeviceswherebd.Name=="BOLUTEK"selectbd).FirstOrDefault();
if(device==null)
{
AndroidMethods.message("Error","BOLUTEKdevicenotfound.PleasemakesureyouarepairedwiththeBOLUTEKdevice.",
"OK",this);
return;
}
socket=device.CreateRfcommSocketToServiceRecord(Java.Util.UUID.FromString("00001101-0000-1000-8000-00805f9b34fb"));
}
if(!socket.IsConnected)
awaitsocket.ConnectAsync();
stringoutString=text.Text+"\r";
stringwakeString="\t\r";
byte[]output=charsToBytes(outString.ToCharArray());
byte[]wakeUp=charsToBytes(wakeString.ToCharArray());
awaitsocket.OutputStream.WriteAsync(wakeUp,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(wakeUp,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(wakeUp,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(output,0,output.Length);
byte[]output2=stringToBytes(outString);
byte[]wakeUp2=stringToBytes(wakeString);
awaitsocket.OutputStream.WriteAsync(wakeUp2,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(wakeUp2,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(wakeUp2,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(output2,0,output.Length);
});
if(socket!=null)
finish();
elseif(adapter==null)
{
AndroidMethods.message("Error","Nobluetoothadapterfound.","OK",this);
return;
}
elseif(!adapter.IsEnabled)
{
DialogBuilder.createConfirmDialog(this,"Error","Bluetoothadapterisnotenabled.Wouldyouliketoenableitnow?",
"No","Yes",delegate
{
adapter.Enable();
finish();
});
}
else
finish();
};
}
publicstaticbyte[]stringToBytes(stringvalue)
{
byte[]bytes=newbyte[value.Length*sizeof(char)];
System.Buffer.BlockCopy(value.ToCharArray(),0,bytes,0,bytes.Length);
returnbytes;
}
publicstaticstringbytesToString(byte[]bytes)
{
char[]chars=newchar[bytes.Length/sizeof(char)];
System.Buffer.BlockCopy(bytes,0,chars,0,bytes.Length);
returnnewstring(chars);
}
publicstaticbyte[]charsToBytes(char[]chars)
{
intlength=chars.Length;
byte[]returnVal=newbyte[length];
for(intx=0;x
returnVal[x]=(byte)chars[x];
returnreturnVal;
}
}

Mark as answer, if helpful.

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Bhuvanesh Mohankumar10y ago
Can you try this code,
usingSystem;
usingSystem.Linq;
usingSystem.IO;
usingAndroid.App;
usingAndroid.Content;
usingAndroid.Runtime;
usingAndroid.Views;
usingAndroid.Widget;
usingAndroid.OS;
usingAndroid.Bluetooth;
//...
publicclassMainActivity:Activity
{
privateBluetoothSocketsocket;
protectedoverridevoidOnCreate(Bundlebundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.Main);
Buttonbutton=FindViewById
EditTexttext=FindViewById(Resource.Id.editText);
button.Click+=delegate
{
BluetoothAdapteradapter=BluetoothAdapter.DefaultAdapter;
Actionfinish=newAction(asyncdelegate
{
if(socket==null)
{
BluetoothDevicedevice=(frombdinadapter.BondedDeviceswherebd.Name=="BOLUTEK"selectbd).FirstOrDefault();
if(device==null)
{
AndroidMethods.message("Error","BOLUTEKdevicenotfound.PleasemakesureyouarepairedwiththeBOLUTEKdevice.",
"OK",this);
return;
}
socket=device.CreateRfcommSocketToServiceRecord(Java.Util.UUID.FromString("00001101-0000-1000-8000-00805f9b34fb"));
}
if(!socket.IsConnected)
awaitsocket.ConnectAsync();
stringoutString=text.Text+"\r";
stringwakeString="\t\r";
byte[]output=charsToBytes(outString.ToCharArray());
byte[]wakeUp=charsToBytes(wakeString.ToCharArray());
awaitsocket.OutputStream.WriteAsync(wakeUp,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(wakeUp,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(wakeUp,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(output,0,output.Length);
byte[]output2=stringToBytes(outString);
byte[]wakeUp2=stringToBytes(wakeString);
awaitsocket.OutputStream.WriteAsync(wakeUp2,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(wakeUp2,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(wakeUp2,0,wakeUp.Length);
awaitsocket.OutputStream.WriteAsync(output2,0,output.Length);
});
if(socket!=null)
finish();
elseif(adapter==null)
{
AndroidMethods.message("Error","Nobluetoothadapterfound.","OK",this);
return;
}
elseif(!adapter.IsEnabled)
{
DialogBuilder.createConfirmDialog(this,"Error","Bluetoothadapterisnotenabled.Wouldyouliketoenableitnow?",
"No","Yes",delegate
{
adapter.Enable();
finish();
});
}
else
finish();
};
}
publicstaticbyte[]stringToBytes(stringvalue)
{
byte[]bytes=newbyte[value.Length*sizeof(char)];
System.Buffer.BlockCopy(value.ToCharArray(),0,bytes,0,bytes.Length);
returnbytes;
}
publicstaticstringbytesToString(byte[]bytes)
{
char[]chars=newchar[bytes.Length/sizeof(char)];
System.Buffer.BlockCopy(bytes,0,chars,0,bytes.Length);
returnnewstring(chars);
}
publicstaticbyte[]charsToBytes(char[]chars)
{
intlength=chars.Length;
byte[]returnVal=newbyte[length];
for(intx=0;x
returnVal[x]=(byte)chars[x];
returnreturnVal;
}
}
Mark as answer, if helpful.
0
Bhuvanesh Mohankumar10y ago
Are you using Xamiran?
0