Perisistent device names for USB serial ports

Posted by Cliff Brake on 2012-12-19 | Comments are off for this article

Currently, my workstation has two 8-port USB<->RS232 devices, one dual port USB<->RS422/RS485 adapter, and several single port adapters such as the very useful BUBII.  So with around 20 USB->serial devices, figuring out which /dev/ttyUSBx entry corresponds to which port is not really practical.  However, with udev in Linux, you can easily give static names to […]

Sprint 598U USB Broadband Modem in Embedded Systems

Posted by Cliff Brake on 2009-02-07 | 4 Comments to Read

One thing that works really well in Linux is support for USB Broadband modems. While it usually takes a little fiddling with PPP scripts, it is generally not too difficult to get working. One of the reasons for this is most modems implement a USB serial interface, and then the modem is controlled with standard […]

Total Phase USB Protocol Analyzer review

Posted by Cliff Brake on 2009-01-09 | Comments are off for this article

I recently purchased a USB protocol analyzer from Total Phase.  The device will analyze full speed USB traffic and works well with Linux.  On Linux, the software makes use of libusb, so there is very little setup required to get the device working — very nice.  At a price of $400, there is really no […]

Using a Verizon USB720 modem in an Embedded Linux system

Posted by Cliff Brake on | 2 Comments to Read

The Verizon USB720 Cellular modem is a quick and easy way to add wireless internet connectivity to your embedded system.  Why might you want to add cellular  connectivity to your embedded device?  Remote access and diagnostics is a big reason.  One customer I have is planning to supply all their distributors with a USB720 so […]