bluetooth-serial.md

Create bluetooth serial console

install tools

sudo apt install bluetooth rfkill bluez bluez-tools 

change bluetooth settings

sudo nano /lib/systemd/system/bluetooth.service

changes:

ExecStart=/usr/lib/bluetooth/bluetoothd -C
ExecStartPost=/usr/bin/sdptool add SP

create rfcomm service

sudo cat > /etc/systemd/system/rfcomm.service<< EOF
[Unit]
Description=Bluetooth service
Documentation=man:bluetoothd(8)
ConditionPathIsDirectory=/sys/class/bluetooth

[Service]
[Unit]
Description=RFCOMM service
After=bluetooth.service
Requires=bluetooth.service

[Service]
ExecStart=/usr/bin/rfcomm watch hci0 1 getty rfcomm0 115200 vt100 -a pi

[Install]
WantedBy=multi-user.target
EOF

apply changes

sudo systemctl daemon-reload
sudo systemctl restart bluetooth
sudo systemctl enable rfcomm
sudo systemctl restart rfcomm

create connection with desktop

bluetoothctl 
------------ commands to type in:
power on
discoverable on
pairable on
scan on
devices
trust [MAC]
pair [MAC]
connect [MAC]