On Wed, 9 Aug 2006 [EMAIL PROTECTED] wrote: > Hi, > > I want to enumerate devices that I connect with USB. I've got two USB Host > Controllers and I connect two USB hubs to the two USB Host Controllers. > The first USB hub contains 7 USB ports and the second USB hub contains 4 > USB ports. In total, I can connect 11 USB devices to the hubs. > > No I want to find out at what port my devices are connected. Suppose that > I connect an USB device to the second port of the first USB hub. How can I > write software that detects where the device is connected? My software > should print out for example: "Mouse device detected at port 2 of the hub > connected to Host Controller 1". > > Normally I can get the data of what devices that are connected from > /proc/bus/usb/devices, but here I only get information about the USB hubs, > not the devices connected to the USB hubs. How can I access that data?
/proc/bus/usb/devices will contain information about every USB device the kernel is aware of. If your devices don't show up, that means they aren't being enumerated correctly. If you build a kernel with CONFIG_USB_DEBUG turned on, you'll get extra information in the dmesg log showing in detail what happens when you plug in a device. Alan Stern ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
