I bothered by the issue of “RFCOMM TTY support not available” for very long time. Finally, after I recomplied the kernel and enabled this support in the kernel setting, I could create “/dev/rfcomm0” serial port now by using the command “sudo rfcomm bind 0 00:04:3E:4B:32:40”.
However, when I tried to read the data from externel bluetooth sensor by the python script, the error returned which said “could not open /dev/rfcomm0 port”.
I tried to edit /etc/systemd/system/dbus-org.bluez.service file like below which worked for my raspberry pi 3b+.
ExecStartPost=/usr/bin/sdptool add SP
However,after I reboot Jetson nano, the bluetooth service failed to start. I used the WiFi Card and Antennas as the website “www.jetsonhacks.com/” suggested.
What should I do? I could recompile the kernel but I don’t know which setting could enable serial port profile for the bluetooth service of Jetson Nano. Any suggestions would really be appreciated.