RComm::Open leaves with KErrAccessDenied!!

[achu2203]

Hi,
I want to transfer data over USB serial connection using RComm.
I am referring this.
http://wiki.forum.nokia.com/index.ph...dition_devices
But not able to open the port

User::LeaveIfError( commPort.Open( server, portName, ECommShared ) );//leave code -21 KErrAccessDenied

I am not sure whether the port is being used by some other process.
Please help to solve this.
br,
Achu

[A.A.M.]

Looks like port is busy. Make sure to close down any other applications using the port on the PC.

[achu2203]

Thanks for your reply.
But i am trying it on emulator not on device. Is it not possible to check in emulator?
Please guide

[A.A.M.]

The Symbian OS provides USB client support on reference hardware. There is no such support in the emulator.

So try to test your application on real device.

[achu2203]

ok..thanks
I will try.

[mrvoltanetwork]

hello, I Had The Same Problem, Using It On Real Device, Can Anyone Help ?

[symbianyucca]

Basically if the port is in use, you would need to find out ways on releasing it, which propably will be difficult, or even impossible.

Or you should try using different port.

of course if you get different errors than what has been discussed, then the problem and thus the solution could be different.

[mrvoltanetwork]

It Worked, I Wasn't Connecting The Cable To The PC While Running The App, Thanks For Your Help

[mrvoltanetwork]

i'm sorry , another thing , how can i read and write to the serial com port ?, is there an example code for this ?

[symbianyucca]

i'm sorry , another thing , how can i read and write to the serial com port ?, is there an example code for this ?

there are no serial ports with S60 devices, so you might want to specify a bit more clearly on what is the sue case you would want to achieve and how.

[mrvoltanetwork]

I want to use the serial communication via USB, to control a microcontroller with serial interface, i did it now, i wrote to a program i made on the pc, but after completing the write , the program closes itself, that's the problem now

[symbianyucca]

I suppose closes thing to that in our wiki would be: http://www.developer.nokia.com/Commu...dition_devices

[mrvoltanetwork]

that's what i did, thanks for your help