56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
#!/usr/bin/env python3
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"""Summarize fixed-size hex frames from serial_sniff.py logs."""
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from __future__ import annotations
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import argparse
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import collections
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import re
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from pathlib import Path
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FRAME_RE = re.compile(r"\b(?:(RX|TX)\s+)?frame\s+\d+\s+((?:[0-9A-Fa-f]{2}\s*)+)$")
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def frames_from_log(path: Path) -> list[tuple[str, str]]:
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frames: list[tuple[str, str]] = []
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for line in path.read_text(encoding="utf-8").splitlines():
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match = FRAME_RE.search(line.strip())
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if match:
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direction = match.group(1) or "RX"
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frame = " ".join(match.group(2).upper().split())
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frames.append((direction, frame))
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return frames
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def checksum_note(frame: str) -> str:
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values = [int(part, 16) for part in frame.split()]
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if len(values) != 6:
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return ""
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checksum = 0x5A
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for value in values[:5]:
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checksum ^= value
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if checksum == values[5]:
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return " checksum ok"
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return f" checksum expected {checksum:02X}"
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def main() -> int:
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parser = argparse.ArgumentParser(description="Count frames in capture logs.")
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parser.add_argument("logs", nargs="+", type=Path)
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args = parser.parse_args()
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for log in args.logs:
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frames = frames_from_log(log)
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counts = collections.Counter(frames)
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print(f"{log}: {len(frames)} frames, {len(counts)} unique direction/frame pairs")
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for (direction, frame), count in counts.most_common():
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print(f" {count:5d} {direction:<2} {frame}{checksum_note(frame)}")
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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