Hello, I'm currently developing an application to communicate with some embedded hardware via an USB<->RS485 / USB<->RS232 converter Tribotix USB2Dynamixel which is based on the FTDI chip. Here is information reported by dmesg about this device: --- usb 4-2: USB disconnect, address 5 usb 4-2: new full speed USB device using uhci_hcd and address 7 usb 4-2: configuration #1 chosen from 1 choice ftdi_sio 4-2:1.0: FTDI USB Serial Device converter detected ftdi_sio: Detected FT232RL usb 4-2: FTDI USB Serial Device converter now attached to ttyUSB0 usb 4-2: New USB device found, idVendor=0403, idProduct=6001 usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 4-2: Product: FT232R USB UART usb 4-2: Manufacturer: FTDI usb 4-2: SerialNumber: A7003Nzt --- The device is registered as /dev/ttyUSB0. ls -lah information: ------ crw-rw---- 1 root uucp 188, 0 2009-01-08 17:39 /dev/ttyUSB0 ------ To have access to the device, I added my user to the uucp group. My application uses LibFTDI to communicate with attached devices and works properly under a Zenwalk (Slackware) configuration out of the box. Under Fedora 10 there is a failure while opening the device. LibUSB's usb_strerror() reports "could not set config 1: Operation not permitted", LibFTDI's ftdi_get_error_string() reports "inappropriate permissions on device!". Executing with root rights works. The failure occurs on ftdi_usb_open Neither chmodding nor chowning /dev/ttyUSB0 fixes the problem. setenforce 0 has also no impact on problem resolution, there are no SELinux reports. Additionally: after closing the device on execution as root, it gets removed and the converter has to be replugged. Is there anything I'm missing? Thank you in advance! -- Dmitri Bachtin -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
