Feature request: warning when enabling channel onto live battery

[brianbienvenu]

Enabling a DCP405 channel attached to a "high-energy" load (eg, 12V SLA battery) will invariably cause the HW OVP to fire the triac, and hence blow F2. I think this is due BB3 ramping up the output voltage, whilst the battery voltage is already present. In cases where there is already a supply present, a warning could be given to the end user.

This is predicated on the voltage at the terminals being available to the BB3, as per #254

[prasimix]

See #9, instead of displaying a warning, the power output cannot be enabled if an external voltage is detected.

[prasimix]

Fixed

[brianbienvenu]

Thanks, that seems like a good resolution.