Add supercap communication driver #152
Description
Blocked: requires the hardware side of supercaps to be testable.
Details are TBD, but this will likely be an I2C-based driver with the following messages:
Firmware -> Device
- Current chassis power draw (inferred from motor current)
- Maximum allowed power draw (from ref system)
Device -> Firmware
- Current energy stored
- Max energy capacity
To start, a basic driver which handles these messages and tracks the variables would be ideal. Once complete, we can make new issues to begin integrating the supercaps into the chassis subsystem.