balena-io-experimental / gps-tracker Goto Github PK

The supervisor API has a method to change the target state so we can hook into the modems sms capability and then remotely enable the VPN if need be.

Currently to use the balena fin boards RGB led, we need access to /sys and the only way I have been able to do that so far is by enabling privileged: true for the service.

It would be nice to figure how to avoid using privilege and map the serial devices in as such:

    devices:
       - "/dev/UC20.NMEA:/dev/UC20.NMEA"
       - "/dev/UC20.AT:/dev/UC20.AT"

Occasionally the modem will not come up as mode 0 in the modemManager list, this is problematic because we currently hardcode the dbus modem path here: https://github.com/balena-io-playground/gps-tracker/blob/master/gps/src/libs/quectel.js#L10 which means dbus fails to connect to the modem in this case.

The EC25 model seems to no longer be sold by a lot of suppliers, it looks like it has been replaced by the EG25.
I've given the EG25 a go and can't get it working. Has anyone had any success trying this?

In some cases, like after reboot, the modem is not detected and connected before the container is started, in this case we need to wait for the modem to come up before we try enable the GPS and read from the serial port

Using a lib like dbus-native

Currently there is a weird issue where the --devices directive for mounting the UC20.NMEA dev into the container doesn't work when setting the privileged: true flag which is needed to access sysfs to toggle the RGB led, needs more investigation.