I am trying to do a custom BMS driver for a "dumb" BMS. The BMS has one way non-canbus communication and I can send data to Victron through DBus. Victron now knows the state of charge, voltage and temperature.
Now, I want to take it a step further. I want my driver to tell victron to reduce charging when voltage of an individual battery has hit its max, or when battery is about to hit max, reduce voltage.
I think I can do that by altering some DBus settings.
However, to my problem.
I need to set the limit alue manually in VenusOS GUI. Read those in my code and act upon them.
The question is: How to I make an input box in a qml file that preserves the value even efter a reboot.
I experimented with this
MbSpinBox {
description: qsTr("Stop discharge cell voltage")
bind: service.path("/Info/StopDischargeVoltage")
stepSize: 0.01
unit: "V"
writeAccessLevel: User.AccessUser
}
but on a restart of my program, the values are lost and default value of -1 is set
dbusservice.add_path('/Info/StopDischargeVoltage', -1, writeable=True)
Where can I learn more about using values from GUI to interact with code?
