Class for USB port

[patil_ruturaj]

Hi,
I have not found any documentation or classes related on using the USB on device side. I have searched the S60 3rd Edition SDK for Symbian OS.

Can a application running on the mobile send data to PC using the USB port ?
I have found no documnetation regarading the same. Is it something undocumented ?

[skumar_rao]

here is the APIs docs.
http://www.symbian.com/Developer/tec...ent/index.html

[patil_ruturaj]

Thanks skumar_rao, do you have any sample code for reading and writing over usb from mobile device........or any refrance code............please let know the links for the same..............

[skumar_rao]

There are no Examples available that are released by Nokia till now.

[patil_ruturaj]

Hi SunilKumar,
Is there anyway we can have dialog (communication) between the program running on mobile and program running on PC, provided that mobile is connected to PC via cable only.
Thanks for all.....

[mateen_maldar]

hi,

patil there is a detailed description AFAIK in the book PC connectivity and communication Programming by Some author of symbian press...

Will be a good reference to program for pc to devices..

Regards,
Mateen Maldar

[patil_ruturaj]

The book about which you are talking looks to be discusing only on SCOM and mRouter......it is also seen that there is no update on PC Connectivity for the Symbian OS above 7.1.............at this moment I am trying out the connectivity possibility with RCOMM with GlassTerm example code as reference but till now no luck.......I am not able to diploy the GlassTerm to device.

[skumar_rao]

Hi SunilKumar,
Is there anyway we can have dialog (communication) between the program running on mobile and program running on PC, provided that mobile is connected to PC via cable only.
Thanks for all.....

The Best way i see id the over TCP. but you can use Bluetooth also. The nokia Connectivity SDK may help you developing some Apps for the same.

[patil_ruturaj]

Hi,
Have modified the Glass Term example...and could get it diployed over the mobile (Nokia 3250) but I am not receiving any data on my hyperterminal which is listening to COM4 port.

I have pasted the code below which I hope will send data over the serial port on the mobile.....if you find any thing missing in the code please let me know.....

When I use the emulator I can see data reaching the port.........

const TInt KBufSize (512);
_LIT(LDD_NAME,"ECOMM"); //ECOMM

#if defined (__WINS__)
_LIT(PDD_NAME,"ECDRV");
#else
_LIT(PDD_NAME,"EUART1"); //ECUART
#endif

_LIT(RS232,"ECUART");
_LIT8(KFAXMODEM,"FaxModem" );
_LIT8(KRutu,"Ruturaj ");
_LIT(KColons,"::");

// Load the drivers
//Load EUART1 as physical device driver
TInt r = User::LoadPhysicalDevice (PDD_NAME);
if (r != KErrNone && r != KErrAlreadyExists)
User::Leave (r);
//Load ECOMM as Logical device driver
r = User::LoadLogicalDevice(LDD_NAME);
if (r != KErrNone && r != KErrAlreadyExists)
User::Leave (r);

//Start the service
r = StartC32 ();
if (r != KErrNone && r != KErrAlreadyExists)
User::Leave (r);

//Kill the FaxModem which will be occuping the COMM::0 port.
TBuf8<50> buf;
TFullName repName;
TFindProcess process;
while(process.Next(repName) != KErrNotFound)
{
buf.Copy(repName);
if ( (buf.Find(KFAXMODEM) != KErrNotFound) )
{
RProcess aProcess;
aProcess.Open(process);
aProcess.Kill(0);
aProcess.Close();
}
}

// Connect the server
RCommServ server;
User::LeaveIfError (server.Connect());

//Load the ECUART module
r = server.LoadCommModule(RS232);
User::LeaveIfError (r);

//Get the number ports avaliable
TInt numPorts;
r = server.NumPorts (numPorts);
User::LeaveIfError (r);

//Get the information related to all the ports avalible
TSerialInfo portInfo;
TBuf16 < 12 > moduleName;
for (TInt index=0 ; index < numPorts ; index++)
{
r = server.GetPortInfo (index, moduleName, portInfo);
User::LeaveIfError (r);
}

TBuf16 < KMaxPortName + 4 > portName;
portName.Num (portInfo.iLowUnit); // put in the port number in ASCII
portName.Insert (0, KColons); // stick in a couple of colons
portName.Insert (0, portInfo.iName); // and lead off with the iName

//Open the avaliable port
RComm commPort;
r = commPort.Open (server, portName, ECommExclusive);
User::LeaveIfError (r);
TCommCaps ourCapabilities;
commPort.Caps (ourCapabilities);
TCommConfig portSettings;
commPort.Config (portSettings);

if (((ourCapabilities ().iRate & KCapsBps115200) == 0) ||
((ourCapabilities ().iDataBits & KCapsData8) == 0) ||
((ourCapabilities ().iStopBits & KCapsStop1) == 0) ||
((ourCapabilities ().iParity & KCapsParityNone) == 0))
{
portSettings ().iRate = EBps115200;
portSettings ().iParity = EParityNone;
portSettings ().iDataBits = EData8;
portSettings ().iStopBits = EStop1;
}
else
{
portSettings ().iRate = EBps19200;
portSettings ().iParity = EParityNone;
portSettings ().iDataBits = EData8;
portSettings ().iStopBits = EStop1;
}
portSettings ().iFifo = EFifoEnable;
portSettings ().iHandshake = KConfigFailDSR; // for no handshaking
portSettings ().iTerminator[0] = 10;
portSettings ().iTerminatorCount = 1;
r = commPort.SetConfig (portSettings);
User::LeaveIfError (r);
// now turn on DTR and RTS, and set our buffer size

commPort.SetSignals (KSignalDTR, 0);
commPort.SetSignals (KSignalRTS, 0);

TRequestStatus keyStat;
TKeyCode key;
TPtrC8 outputByte ((TUint8 *) & key, 1);
TBuf8 < KBufSize > localInputBuffer;

for (TInt index=0 ; index < 100; index++)
{
TRequestStatus stat;
commPort.Write (stat,KRutu);
User::WaitForRequest (stat);
r = stat.Int ();
}

commPort.Close ();
server.Close ();