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)