FPv2: add comment about nuance of fuzzy fingerprinting (#28465)

add comment describing this nuance of fuzzy fingerprint function old-commit-hash: 3234243c97
2 years ago · 1a3b5137b6
parent c73ef08d08
commit 1a3b5137b6
1 changed files with 2 additions and 0 deletions
--- a/selfdrive/car/fw_versions.py
+++ b/selfdrive/car/fw_versions.py
@ -91,6 +91,8 @@ def match_fw_to_car_fuzzy(fw_versions_dict, log=True, exclude=None):
        elif candidate != candidates[0]:
          return set()

+  # Note that it is possible to match to a candidate without all its ECUs being present
+  # if there are enough matches. FIXME: parameterize this or require all ECUs to exist like exact matching
  if len(matched_ecus) >= 2:
    if log:
      cloudlog.error(f"Fingerprinted {candidate} using fuzzy match. {len(matched_ecus)} matching ECUs")