I need to map one serial port converter to static usb port so after my raspberry gets restarted I still have the right mapping.

I bought this USB-> serial port RS485 converter http://www.dx.com/p/usb-to-rs485-adapter-black-green-296620#.VZ5TnPmvXco And it looks like it is using chip CH-340. I need to change the serial number of this chip to be able to give it the same /dev/ttyUSBx in Linux after reboot.

I tried to find unique attributes using udevadm info -a -n /dev/ttyUSB1 but nothing is unique there, I have 4 of these converters connected and they all show the same serial number and vendor. Is there any chance to change the serial number or map them staticaly?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.