can't tcsetattr for /dev/1-1 for USB

shravan0702
Dear All,

After connecting USB to Serial connector to the port of friendly ARM
board,I have given following command to access the device,

#microcom -s 115200 /dev/1-1 

It respond's as,

microcom: can't tcsetattr for /dev/1-1 for USB: Inappropriate ioctl for
device

How can I overcome with this problem.

With Best Regards.

davef
Are you sure this converter is /dev/1-1?  

Had to do a few experiments:

On a netbook my USB to serial converter is ttyUSB0.
On a mini2440 it doesn't register.  I suspect that my kernel doesn't have
serial converter support built-in or as a module.

Just for my information, is using one of the other three com ports on the
mini2440 not appropriate for your application?

shravan0702
Attachment: usbinformation.png (158.86 KB)
actually i am using usb port .i have connected usb gps modem.
to it .i got the problem which i had mentioned above .

how to configer usb to serial converter ?

For more clarity I have uploaded the "USB debug message screen shot" while
connecting the USB to the friendly arm port?

davef
I see where you are getting the 1-1 from!

Try dmesg, note the last few lines, then plug the device in and demsg again
and send a picture of that output.

shravan0702
Attachment: pictures.tar.gz (250.43 KB)
screen shots for usb connected and disconnected.