when check UART on BBB you will see only UART0 If you want to use other.
You must defined others. There is tutorial maybe you can check this
http://tenderlovemaking.com/2014/01/19/enabling-ttyo1-on-beaglebone.html
2015-11-10 17:40 GMT+02:00 Peter Hurley :
> On
Yes, you can use different UART and Run
check console ls -l /dev/ttyO*
Result
crw--w 1 root tty 248, 0 Jan 1 2000 /dev/ttyO0
crw-rw 1 root dialout 248, 1 Nov 10 13:23 /dev/ttyO1
crw-rw 1 root dialout 248, 4 Nov 10 14:37 /dev/ttyO4
than which want to open UART port