obdbind

obdbind

This is a simple systemd service unit that is designed to run bind a Bluetooth OBDII adapter on startup.

Installation

The provided script will automatically install the obdbind.service unit file in /lib/systemd/system and enable it. Run it with sudo in this directory:

$ sudo ./install_obdbind.sh install <MAC address of the OBDII adapter>

To disable and remove the unit file:

$ sudo ./install_obdbind.sh uninstall

obdbind.service

This systemd service unit will simply run the rfcomm bind command on startup to bind the Bluetooth OBDII adapter to an RFCOMM virtual serial device.

$ rfcomm bind /dev/rfcomm0 <MAC address of the OBDII adapter>

The unit file can be modified to bind to a different RFCOMM virtual serial device (e.g. /dev/rfcomm9), or to bind to a specific RFCOMM channel. These are specified in Environment= directives, and can be easily modified.

Environment="OBD_RFCOMM_DEV=/dev/rfcomm9"
Environment="OBD_MAC_ADDR=AA:BB:CC:DD:EE:FF"
Environment="OBD_RFCOMM_CHANNEL=5"