Github link:

Clickup link: ClickUp

Description

This board handles dashboard inputs, robustly detects connection failures, and relays data to other boards.

Requirements

• Hardware

  • 2x CAN chips and in/out connector pairs

    • Controls CAN

    • Car CAN

  • Receive main power/ground (24V)

    • Buck for MCU/PSOMs

  • Receive isolated power/ground

    • for CAN

  • Dashboard IO:

    • Ignition switch

    • Gear switch

    • Cruise set

    • Cruise enable

    • Regen enable

    • Hazard lights

    • Sup switch (isolated)

  • Steering wheel IO:

    • Left turn indicator

    • Right turn indicator

    • Horn

    • Regen active

• Software

  • Send on CarCAN:

    • ignition state [2 bits]

    • gear state [2 bits]

    • regen en [1 bit]

    • regen active [1 bit]

    • left indicator on [1 bit]

    • right indicator on [1 bit]

    • headlights on [1 bit]

    • brakelights on [1 bit]

    • cruise en [1 bit]

    • cruide set [32 bits]

    • error status bitmap [XX bits]

  • Read from CarCAN:

    • Pedals info from pedals board (for brakelights)

    • BPS fault (start hazards automatically)

  • Look for faults in button/switch states

  • Send commands on ControlsCAN whether we need to turn on lights or not

    • headlights on [1 bit]

    • brake light on [1 bit]

    • left turn indicator en [1 bit]

    • right turn indicator en [1 bit]

      • (for hazards just set left and right to both 1)

    • blink synchronization bit [1 bit]

      • (1 for light on, 0 for light off)

    • custom config 1 [1 bit]

    • custom config 2 [1 bit]

    • custom config 3 [1 bit]

  • Receive status messages from lighting boards on ControlsCAN and forward to CarCAN

Hardware Testing

MOSFET Button inputs ✅ - mosfet turns on and off when signal input (gate) is set to high

24v → 5v buck ✅

Open

5v → 3.3v LDO ✅

Open

LSOM Testing

RevB Modifications: