def fingerprint(logcan, sendcan):
fixed_fingerprint = os.environ.get('FINGERPRINT', "")
skip_fw_query = os.environ.get('SKIP_FW_QUERY', False)
if not fixed_fingerprint and not skip_fw_query:
# Vin query only reliably works thorugh OBDII
bus = 1
cached_params = Params().get("CarParamsCache")
if cached_params is not None:
cached_params = car.CarParams.from_bytes(cached_params)
if cached_params.carName == "mock":
cached_params = None
if cached_params is not None and len(cached_params.carFw) > 0 and cached_params.carVin is not VIN_UNKNOWN:
cloudlog.warning("Using cached CarParams")
vin = cached_params.carVin
car_fw = list(cached_params.carFw)
else:
cloudlog.warning("Getting VIN & FW versions")
_, vin = get_vin(logcan, sendcan, bus)
car_fw = get_fw_versions(logcan, sendcan)
exact_fw_match, fw_candidates = match_fw_to_car(car_fw)
else:
vin = VIN_UNKNOWN
exact_fw_match, fw_candidates, car_fw = True, set(), []
cloudlog.warning("VIN %s", vin)
Params().put("CarVin", vin)
finger = gen_empty_fingerprint()
candidate_cars = {i: all_legacy_fingerprint_cars() for i in [0, 1]} # attempt fingerprint on both bus 0 and 1
frame = 0
frame_fingerprint = 10 # 0.1s
car_fingerprint = None
done = False
while not done:
a = get_one_can(logcan)
for can in a.can:
# The fingerprint dict is generated for all buses, this way the car interface
# can use it to detect a (valid) multipanda setup and initialize accordingly
if can.src < 128:
if can.src not in finger:
finger[can.src] = {}
finger[can.src][can.address] = len(can.dat)
for b in candidate_cars:
# Ignore extended messages and VIN query response.
if can.src == b and can.address < 0x800 and can.address not in (0x7df, 0x7e0, 0x7e8):
candidate_cars[b] = eliminate_incompatible_cars(can, candidate_cars[b])
# if we only have one car choice and the time since we got our first
# message has elapsed, exit
for b in candidate_cars:
if len(candidate_cars[b]) == 1 and frame > frame_fingerprint:
# fingerprint done
car_fingerprint = candidate_cars[b][0]
# bail if no cars left or we've been waiting for more than 2s
failed = (all(len(cc) == 0 for cc in candidate_cars.values()) and frame > frame_fingerprint) or frame > 200
succeeded = car_fingerprint is not None
done = failed or succeeded
frame += 1
exact_match = True
source = car.CarParams.FingerprintSource.can
# If FW query returns exactly 1 candidate, use it
if len(fw_candidates) == 1:
car_fingerprint = list(fw_candidates)[0]
source = car.CarParams.FingerprintSource.fw
exact_match = exact_fw_match
if fixed_fingerprint:
car_fingerprint = fixed_fingerprint
source = car.CarParams.FingerprintSource.fixed
cloudlog.event("fingerprinted", car_fingerprint=car_fingerprint,
source=source, fuzzy=not exact_match, fw_count=len(car_fw))
return car_fingerprint, finger, vin, car_fw, source, exact_match
def fingerprint(logcan, sendcan):
fixed_fingerprint = os.environ.get('FINGERPRINT', "")
skip_fw_query = os.environ.get('SKIP_FW_QUERY', False)
if not fixed_fingerprint and not skip_fw_query:
# Vin query only reliably works thorugh OBDII
bus = 1
cached_params = Params().get("CarParamsCache")
if cached_params is not None:
cached_params = car.CarParams.from_bytes(cached_params)
if cached_params.carName == "mock":
cached_params = None
if cached_params is not None and len(
cached_params.carFw
) > 0 and cached_params.carVin is not VIN_UNKNOWN:
cloudlog.warning("Using cached CarParams")
vin = cached_params.carVin
car_fw = list(cached_params.carFw)
else:
cloudlog.warning("Getting VIN & FW versions")
_, vin = get_vin(logcan, sendcan, bus)
car_fw = get_fw_versions(logcan, sendcan, bus)
exact_fw_match, fw_candidates = match_fw_to_car(car_fw)
else:
vin = VIN_UNKNOWN
exact_fw_match, fw_candidates, car_fw = True, set(), []
cloudlog.warning("VIN %s", vin)
Params().put("CarVin", vin)
finger = gen_empty_fingerprint()
candidate_cars = {i: all_legacy_fingerprint_cars()
for i in [0, 1]
} # attempt fingerprint on both bus 0 and 1
frame = 0
frame_fingerprint = 10 # 0.1s
car_fingerprint = None
done = False
while not done:
a = get_one_can(logcan)
for can in a.can:
# need to independently try to fingerprint both bus 0 and 1 to work
# for the combo black_panda and honda_bosch. Ignore extended messages
# and VIN query response.
# Include bus 2 for toyotas to disambiguate cars using camera messages
# (ideally should be done for all cars but we can't for Honda Bosch)
if can.src in range(0, 4):
finger[can.src][can.address] = len(can.dat)
for b in candidate_cars:
if (can.src == b or (only_toyota_left(candidate_cars[b]) and can.src == 2)) and \
can.address < 0x800 and can.address not in [0x7df, 0x7e0, 0x7e8]:
candidate_cars[b] = eliminate_incompatible_cars(
can, candidate_cars[b])
# if we only have one car choice and the time since we got our first
# message has elapsed, exit
for b in candidate_cars:
# Toyota needs higher time to fingerprint, since DSU does not broadcast immediately
if only_toyota_left(candidate_cars[b]):
frame_fingerprint = 100 # 1s
if len(candidate_cars[b]) == 1 and frame > frame_fingerprint:
# fingerprint done
car_fingerprint = candidate_cars[b][0]
# bail if no cars left or we've been waiting for more than 2s
failed = (all(len(cc) == 0 for cc in candidate_cars.values())
and frame > frame_fingerprint) or frame > 200
succeeded = car_fingerprint is not None
done = failed or succeeded
frame += 1
exact_match = True
source = car.CarParams.FingerprintSource.can
# If FW query returns exactly 1 candidate, use it
if len(fw_candidates) == 1:
car_fingerprint = list(fw_candidates)[0]
source = car.CarParams.FingerprintSource.fw
exact_match = exact_fw_match
if fixed_fingerprint:
car_fingerprint = fixed_fingerprint
source = car.CarParams.FingerprintSource.fixed
cloudlog.event("fingerprinted",
car_fingerprint=car_fingerprint,
source=source,
fuzzy=not exact_match)
return car_fingerprint, finger, vin, car_fw, source, exact_match
934: 8,
998: 5,
1745: 8,
1000: 8,
764: 8,
1002: 8,
999: 7,
1789: 8,
1649: 8,
1779: 8,
1568: 8,
1017: 8,
1786: 8,
1787: 8,
1020: 8,
426: 6,
1279: 8
}
candidate_cars = all_legacy_fingerprint_cars()
for addr, l in fingerprint.items():
dat = messaging.new_message('can', 1)
msg = dat.can[0]
msg.address = addr
msg.dat = " " * l
candidate_cars = eliminate_incompatible_cars(msg, candidate_cars)
print(candidate_cars)
