Dedicated Ground type
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ducky64 commented
because gnd and gnd_out in the microcontroller dev board is actually pretty confusing
Idea: unify it into a single bidirectional gnd type. Voltage-source-to-ground requires an explicit conversion (which it probably should).
Some considerations:
- How to support offset grounds? Perhaps there does need to be a GroundSource that supports offset-grounds, while a link with no GroundSource is zero implicitly? (and conflicting GroundSources are an obvious error)
- How should voltage APIs look like? Perhaps Voltage[Source|Sink].voltage_from(gnd)? Likely all the port constructors should have a ground reference?