4D: VCU Simulation Mode about vcu-fw

[rafguevara14]

Need to test the final code, but it depends on @kevinl03's scripts so not a priority until they are finalized.

[rafguevara14]

Created a simple encoding scheme instead of using utf-8 to make it easier for the firmware to manage incoming messages. More details here:

VCU Firmware Simulation

This is what the pseudocode would look like from both sides:

# Python code 
def throttle_encode(a1: int, a2: int) -> bytes:
	value = (a1-1268) | (a2-410)<< 13
	return value.to_bytes(3, byteorder='little')

apps1, apps2 = 1062, 538
print(apps1, apps2)

message = phantom_encode(apps1, apps2)

print(f'Sending {len(message)=} packets')

# VCU Firmware code
msg = int.from_bytes(message, 'little') 
apps1_val = (msg & 0b111111111111) + 1268
apps2_val = ((msg & 0b1111111111 << 13) >> 13) + 410

print(apps1_val, apps2_val)