Hi

I'm trying to get a ps2 barcode scanner to work with a ps2-usb converter in a usb slot.

The kernel recognises the ps2 converted when i insert it, and i'm guessing loads some drivers as well. My question is, how do I access this device? do I need to create my own device in /dev/usb? a couple already exists, but when i try to open them, the file descriptor returns -1 (open ("/dev/usb/hiddev0", O_RDONLY)

I've tried a number of devices with a 'sniffer' that wrote, but all the usb devices can't open.

If anybody can tell me how i can use the device, i would really appreciate it, since i have found nothing to help me in the last couple of days

thanks

you should check out the kernel API for this particular device. Usually, you have to IOCTL some parameters before you can just open the device. It should all be there in the driver file though, look for the ioctl function in the driver and follow the code flow. Also look at the open() and read() and write() calls in the driver.

Aaron

you mentioned device? do i need to know what device ie /dev/foo_bar ? thats the one issue. Otherwise, if i understand you correctly, you said i could just open() the driver. as far as I understand open only works on pathnames (ie /dev/foo_bar) and then it creates a file descriptor for that device, rather than accessing some driver.o file and then working the magic?

with the kernel API, do you mean i should write my own driver for the barcode scanner? I figured the usbkbd (or even the devkbd) driver should have the functionality built in. ... ?

thanks in advance