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----- Message from amit deshpande <[EMAIL PROTECTED]> on Mon, 24 Oct 2005 23:29:04 -0700 (PDT) -----
|
To:
| amit deshpande <[EMAIL PROTECTED]> |
|
Subject:
| Re: Fw: Help On USB Ports |
Hi,
Iam using javax.usb package in my project i am little
bit stuck up here can i get help its urgent.the
problem is i detect usb ports on a pc,i detect usb
device to a port,i send some command to this device
but iam getin same command in return and not the data
which iam expecting.Can u help Here is my code .Iam
communicating
with a RFID feig reader through usb to serial
converter
device========================
import java.util.*;
import javax.usb.*;
import javax.usb.event.*;
import javax.usb.util.*;
import java.io.*;
public class detectusb
{
UsbServices services = null;
UsbHub virtualRootUsbHub = null;
public static void main(String argv[])
{
try
{
detectusb d =new detectusb();
UsbServices services =
UsbHostManager.getUsbServices();
UsbHub rootHub =
services.getRootUsbHub();
List ports=rootHub.getUsbPorts();
for(int i=0;i<ports.size();i++)
{
System.out.println("port:"+ports.get(i));
}
d.traverse(rootHub);
//System.out.println("after traverse");
}
catch (Exception e) {}
}
public void traverse(UsbDevice device)
{
if (device.isUsbHub())
{
List attachedDevices =
((UsbHub)
device).getAttachedUsbDevices();
for (int i=0; i<attachedDevices.size();
i++)
{
traverse((UsbDevice)
attachedDevices.get(i));
}
}
else
{
System.out.println("Device
found:"+device);
//System.out.println(device.getUsbDeviceDescriptor());
communicate(device);
}
}
public void communicate(UsbDevice device)
{
UsbConfiguration
config=device.getActiveUsbConfiguration();
UsbInterface interf = null;
UsbEndpoint endptIn = null;
UsbEndpoint endptOut = null;
UsbEndpoint ep = null;
if(config!=null) // if conf is null get
the interface
{
interf=config.getUsbInterface((byte)0);
System.out.println("INTERFACE
FOUND:"+interf);
}
else
{
System.out.println("Error");
}
try {
interf.claim(new policy()); //
if interface found claim that
}
catch (Exception ue)
{
System.out.println("Exception of
claiming interface:"+ue);
}
List eps=interf.getUsbEndpoints();
//get the endpts of interface
for(int j=0;j<eps.size();j++)
{
ep = (UsbEndpoint)eps.get(j);
// System.out.println("End
point:"+ep);
int t=ep.getType();
//System.out.println("TYPE==="+t);
if(t == UsbConst.ENDPOINT_TYPE_BULK
&& ep.getDirection()==UsbConst.ENDPOINT_DIRECTION_IN )
//to read endpt direction should be IN
{
endptIn = ep;
System.out.println("direction is IN"
+endptIn);
}
else{System.out.println("not found any
end pt");}
}
UsbPipe pipe=endptIn.getUsbPipe();
System.out.println("PIPE:"+pipe);
try
{
pipe.open();
}
catch (UsbException ue)
{
System.out.println("pipe open
exception:"+ue.toString());
}
UsbIrp transfer=pipe.createUsbIrp();
byte [] buffer =
{0x07,(byte)0xFF,(byte)0xB0,0x01,0x00,(byte)0x1C,(byte)0x56};
// byte [] buffer =
{0x05,(byte)0xFF,(byte)0x65,(byte)0xE5,(byte)0xCB};
//byte[] buffer = new
byte[UsbUtil.unsignedInt(pipe.getUsbEndpoint().getUsbEndpointDescriptor().wMaxPacketSize())];
try
{
transfer.setData(buffer);
//transfer.setLength(64);
//transfer.setOffset(0);
// transfer.complete();
//transfer.waitUntilComplete();
System.out.println("after setting
buffer::"+transfer.isComplete());
}catch(Exception
e){System.out.println("exception of send command"+e);}
try
{
byte[] data1=transfer.getData();
System.out.println("----GETLength-----:"+transfer.getLength());
for(int i=0;i<data1.length;i++){
System.out.println("received data"+
javax.usb.util.UsbUtil.toHexString(data1[i]));
}
}catch(Exception
e){System.out.println("Exception in receiving
data"+e);}
}
The output
is+++++++++++++++++++++++++++++++++++++++++++
port:[EMAIL PROTECTED]
port:[EMAIL PROTECTED]
port:[EMAIL PROTECTED]
port:[EMAIL PROTECTED]
Device found:[EMAIL PROTECTED]
INTERFACE FOUND:[EMAIL PROTECTED]
not found any end pt
not found any end pt
direction is [EMAIL PROTECTED]
PIPE:[EMAIL PROTECTED]
after setting buffer::false
----GETLength-----:7
received data07
received dataff
received datab0
received data01
received data00
received data1c
received data56
Thanks& Regards,
Amit D
--- amit deshpande <[EMAIL PROTECTED]> wrote:
> Hi,
> I just wanted to know one more thing I TRIED USING
> JUSB
> .But I was Unable even to run the simple basic code
> AS
> it started giving HostSupport Unavailable.
> Can u help.
> Regards ,
> Amit
>
> --- [EMAIL PROTECTED] wrote:
>
> >
> > Hello,
> >
> > You can send commands to your device using the
> > asyncSubmit and syncSubmbit
> > methods. However maybe you are asking not _how_
> to
> > send commands but
> > _what_ commands to send? In that case I can't
> help
> > you, the commands are
> > specific to your device's protocol which isn't
> part
> > of the USB spec. You
> > need to get the specification for your device to
> > know how to talk to
> > it...many devices are "proprietary" and their
> > specification isn't publicly
> > available. Your only choice then is to reverse
> > engineer the protocol by
> > "sniffing" the communication when an existing
> driver
> > is talking to the
> > device.
> >
> > You should also try joining the mailing list and
> > posting questions there.
> >
> > Thanks.
> >
> >
> >
> > > amit deshpande <[EMAIL PROTECTED]>
> > > 10/01/2005 06:50 AM
> > >
> > > To
> > > [EMAIL PROTECTED]
> > > cc
> > >
> > > Subject
> > > Help On USB Ports
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Hi,
> > > i am trying to communicate with usb port using
> > > javax.usb,
> > > i have successfully implemented a code which
> > > continously monitors usb port for a device. My
> > > question i have detected a usb pen drive device
> > and
> > > opened pipe for communication.But how do i send
> > > commands to the port .Any Help would be
> > appreciated &
> > > Can it be done.
> > > Regards ,
> > > Amit
> > >
> > >
> > >
> > > __________________________________
> > > Yahoo! Mail - PC Magazine Editors' Choice 2005
> > > http://mail.yahoo.com
> > >
> >
>
>
>
>
> __________________________________
> Yahoo! Mail - PC Magazine Editors' Choice 2005
> http://mail.yahoo.com
>
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