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Sender: 0xE5 CCS
Receiver: 0x50
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CAN Communication
MCP2515 is responsible for sending and receiving CAN messages.
SAE J1772 Standard Notes
J1772 Plug Pinout
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Control Pilot PWM
Circuit:
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Proximity Pin (PP) or Proximity Detection
page 18 of standard:
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Proximity Sense:
GPIO Address: PA7
Design Options:
periodic ADC running always
periodic ADC only activated when the charger is powered (PB1)
Charging Operation:
car should be in park not neutral
we can either be in a undervoltage state, or neutral
we’re also charging from solar
need to have a threshold for opening the solar relays
that threshold is not necessarily the overvoltage fault
cells are 95% charged
whenever solar closed, battery has to be closed
we should always make sure
motor controllers must not be connected
when car’s in parking, mci should disconnect
unless we’re not in an “undervoltage charge state” and we’re in “park” we should be able to charge
After charging:
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MCP2515
bms needs to send a taper message
bms needs to send a fully charged message
Richard’s Notes
Notes on Charger CAN Comm:
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