selfdrive/debug: view iso-tp communication from logs (#31217)

* add

* some clean up

* more clean up

* add

* ltl

* add todo

* rm

* use default_mode

---------

Co-authored-by: Justin Newberry <justin@comma.ai>
old-commit-hash: 50cb6f819d

selfdrive/debug/debug_fw_fingerprinting_offline.py

@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+import argparse
+
+from openpilot.tools.lib.logreader import LogReader, ReadMode
+from panda.python import uds
+
+
+def main(route: str, addrs: list[int]):
+  """
+  TODO:
+  - highlight TX vs RX clearly
+  - disambiguate sendcan and can (useful to know if something sent on sendcan made it to the bus on can->128)
+  - print as fixed width table, easier to read
+  """
+
+  lr = LogReader(route, default_mode=ReadMode.RLOG)
+
+  start_mono_time = None
+  prev_mono_time = 0
+
+  # include rx addresses
+  addrs = addrs + [uds.get_rx_addr_for_tx_addr(addr) for addr in addrs]
+
+  for msg in lr:
+    if msg.which() == 'can':
+      if start_mono_time is None:
+        start_mono_time = msg.logMonoTime
+
+    if msg.which() in ("can", 'sendcan'):
+      for can in getattr(msg, msg.which()):
+        if can.address in addrs:
+          if msg.logMonoTime != prev_mono_time:
+            print()
+            prev_mono_time = msg.logMonoTime
+          print(f"{msg.logMonoTime} rxaddr={can.address}, bus={can.src}, {round((msg.logMonoTime - start_mono_time) * 1e-6, 2)} ms, " +
+                f"0x{can.dat.hex()}, {can.dat}, {len(can.dat)=}")
+
+
+if __name__ == "__main__":
+  parser = argparse.ArgumentParser(description='View back and forth ISO-TP communication between various ECUs given an address')
+  parser.add_argument('route', help='Route name')
+  parser.add_argument('addrs', nargs='*', help='List of tx address to view (0x7e0 for engine)')
+  args = parser.parse_args()
+
+  addrs = [int(addr, base=16) if addr.startswith('0x') else int(addr) for addr in args.addrs]
+  main(args.route, addrs)