FAQ

Frequently Asked Questions

If you can't find a solution to your problem feel free to write to an appropriate mailing list.

I can't find my devices on Mac OS X / Windows / Linux

Possibility 1: insufficient rights on Mac OS X / Linux

Please make sure that the user running your application is in the group dialout or, if not applicable to your setup, has enough right to connect to the /dev/ttyXXX port the device is available at. If the user doesn't have enough rights the program may fail with a NoSuchPortException thrown by the RXTX library used for communication with the serial port.

Possibility 2 (iSense, Telos B): missing drivers

For Mac OS X and Windows please make sure that you have installed the latest Virtual COM Port drivers for the FTDI USB to Serial converter that are used on the devices.

On Linux please make sure that your kernel contains a driver for the FTDI chips used by the devices.

Possibility 2 (Pacemate): missing drivers

Please make sure you have the latest CP210x USB to UART Bridge VCP Drivers for your platform installed.

On Mac OS X I get a PortInUseException when trying to connect to a device

Please make sure that the directory /var/lock exists and is readable and writable by the current user. RXTX places lock files inside this directory for locking the devices.

TimeoutException is thrown when using a Pacemate connected to an USB Hub

This problem is an known issue #46. Possible workarounds:

• Connect the Pacemate directly to the host
• Use another USB Hub
• Attach and detach the device so long until it is working as expected