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# Exosense Device - Jaguar Land Rover Tizen IVI HVAC control demo
# Building the Exosense JLR demo.
Follow the instructions under:
`https://github.com/Feuerlabs/exosense_specs/blob/master/doc/exosense_demo_tutorial.pdf`
Replace meta-exodemo with meta-jlrdemo (the Yocto build layerfor this
demo). The meta-sbc6845 layer, mentioned in the tutorial, will not be
needed.
## Setting up configuration files
After setting up the basic environment, as described in the tutorial,
init the build environment with this command:
`. oe-init-build-env ../build`
Copy `meta-jlrdemo/build_conf/*.conf` into the `conf` subdirectory of
the build directory you are currently in.
cp ../meta-jlrdemo/build_conf/*.conf conf
## Build the RPM
Since the demo is installed on Tizen, we will not create a complete
image, but rather a set of RPMs that can be installed on the standard
demo.
Build the RPMs with:
bitbake erlang-jlrdemo
The rpms will be deposited in
build/tmp/deploy/rpm/i586
# Installing the Exosense JLR demo RPMs on the target system
All rpms to be copied over from the directory above to the target system are listed in
https://github.com/Feuerlabs/jlrdemo/blob/master/tizen_rpm_list.txt
Once copied, install them all using a single `rpm -i` command
# Setting up automatic launch during boot
There is a start script for the Exosense JLR demo installed on the target under:
/usr/lib/erlang/jlrdemo-???/priv/jlrdemo_ctl.sh
This script also installs the pcan driver kernel module (unless already loaded).
Copy this script to /usr/sbin
/usr/lib/erlang/jlrdemo-*/priv/jlrdemo_ctl.sh /usr/sbin
Edit the uxlaunch systemd service in file:
/etc/systemd/system/display-manager.service
Edit the ExecStart= line so that it looks like this:
ExecStart=/bin/sh /usr/sbin/tizenctl.sh start
**Note** The /usr/sbin/tizenctl.sh, which will start the dashboard UI,
and the `/usr/sbin/jlrdemo.sh` script is not provided by the
Exosense RPMs. Please see the Tizen documentation for details on
where to source this.
# Upgrading the Exosense JLR demo
Be sure to remove the old package using `rpm -e` before installing the new version.
Also be sure to execute the following command to wipe any old setup data.
rm -rf /root/setup
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