Re: connecting omap and comp using usb cable

["Felipe Balbi" <felipebalbi@users.sourceforge.net>]

Hello Wael,

On 3/27/07, Wael Adel <showairovic@gmail.com> wrote:
> On 3/27/07, Wael Adel <showairovic@gmail.com> wrote:
> > i m using A-A usb cable to connect my comp to the OMAP kit.OK
> > so that the OMAP kit would b the device (slave) of the usb bus while
> > the host of the bus would b my computer ?

Yes, that's right. But I think you don't need to write another
application if you can use
what's already there.

Try to build your device's kernel with support to USB Gadget. And
enable CONFIG_USB_ETH. This'll build a module called g_ether. This
module will let your USB Device work as a Ethernet card. This way you
will be able to ssh into the device and work on that.

I don't know if this will help ya... I don't know what's your objectives.

If you could tell us a bit more...



> > is there any problem in that?

No problem at all.. this is the correct way to do it.

> >
> > On 3/27/07, Felipe Balbi <felipebalbi@users.sourceforge.net> wrote:
> > > What do you mean with "connect to OMAP" ??
> > > Why don't you use g_serial to emulate a tty terminal through usb or
> > > g_ether to emulate a network card through USB ??
> > >
> > > I think g_ether would easier... as long as you can connect to OMAP
> > > board using SSH or Telnet or something like that.
> > >
> > >
> > >
> > >
> > > On 3/27/07, Wael Adel <showairovic@gmail.com> wrote:
> > > > hi all,
> > > > i want to communicate with the OMAP kit through the usb cable.
> > > >
> > > > so i made the following small program as a first step  to open the
> > > > device as follows: (Note that i have made by taking copy of flash
> > > > recovery program omapf1)
> > > >
> > >
> > ********************************************************************************************************
> > > > #include <stdio.h>
> > > > #include <string.h>
> > > > #include <usb.h>
> > > >
> > > > #define OMAP_VENDOR     0x0451
> > > > #define OMAP_PRODUCT    0x3f00
> > > > #define IN_EP   0x81
> > > > #define OUT_EP  0x02
> > > >
> > > > int main(int argc, char *argv[])
> > > > {
> > > >   usb_init();
> > > >   usb_find_busses();
> > > >
> > > >
> > > >        fprintf (stderr, "Waiting to OMAP-USB connection\n");
> > > >         for (;;)
> > > >         {
> > > >                 sleep (1);
> > > >
> > > >                 int     n= usb_find_devices ();
> > > >                 if (n)
> > > >                 {
> > > >                         struct usb_bus  *bus;
> > > >                         for (bus= usb_get_busses (); bus; bus=
> > bus->next)
> > > >                         {
> > > >                                 struct usb_device       *dev;
> > > >
> > > >                                 for (dev= bus->devices; dev; dev=
> > > dev->next)
> > > >                                 {
> > > >                                         usb_dev_handle  *handle;
> > > >                                         if (dev->descriptor.idVendor
> > > > == OMAP_VENDOR  &&
> > > >
> > > > dev->descriptor.idProduct == OMAP_PRODUCT  &&
> > > >                                                 (handle= usb_open
> > > > (dev)) != NULL)
> > > >                                         {
> > > >                                                 printf("Device is
> > > > opened successfully\n");
> > > >                                         }
> > > >                                 }
> > > >                         }
> > > >                 }
> > > >         }
> > > >   return 0;
> > > > }
> > > >
> > >
> > ********************************************************************************************************************
> > > >
> > > > but u guess what?
> > > > when i run this small program,i got the following output:
> > > >
> > > > Waiting to OMAP-USB connection
> > > >
> > > > note that i checked that the usb cable is connected well between my
> > > > comp and the kit.
> > > > Also i checked that jumper 3 is set to pins (1,2)
> > > > do u have any ideas why the device is not found?
> > > > thanks in advance.
> > > > _______________________________________________
> > > > Linux-omap-open-source mailing list
> > > > Linux-omap-open-source@linux.omap.com
> > > > http://linux.omap.com/mailman/listinfo/linux-omap-open-source
> > > >
> > >
> > >
> > > --
> > > Best Regards,
> > >
> > > Felipe Balbi
> > > felipebalbi@users.sourceforge.net
> > >
> >
>


-- 
Best Regards,

Felipe Balbi
felipebalbi@users.sourceforge.net