95 lines
2.7 KiB
Python
95 lines
2.7 KiB
Python
#!/usr/bin/env python3
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"""Replay a capture file through a pseudo-TTY for local GUI verification."""
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from __future__ import annotations
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import argparse
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import os
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import sys
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import time
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def main() -> None:
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parser = argparse.ArgumentParser(
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description="Воспроизводит лог-файл через PTY как виртуальный серийный порт."
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)
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parser.add_argument("file", help="Путь к лог-файлу (например my_picocom_logfile.txt)")
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parser.add_argument(
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"--pty",
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default="/tmp/ttyVIRT0",
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help="Путь симлинка PTY (по умолчанию /tmp/ttyVIRT0)",
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)
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parser.add_argument(
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"--speed",
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type=float,
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default=1.0,
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help=(
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"Множитель скорости воспроизведения: "
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"1.0 = реальное время при --baud, "
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"2.0 = вдвое быстрее, "
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"0 = максимально быстро"
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),
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)
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parser.add_argument(
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"--baud",
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type=int,
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default=115200,
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help="Скорость (бод) для расчета задержек (по умолчанию 115200)",
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)
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args = parser.parse_args()
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if not os.path.isfile(args.file):
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sys.stderr.write(f"[error] Файл не найден: {args.file}\n")
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raise SystemExit(1)
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master_fd, slave_fd = os.openpty()
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slave_path = os.ttyname(slave_fd)
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os.close(slave_fd)
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try:
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os.unlink(args.pty)
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except FileNotFoundError:
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pass
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os.symlink(slave_path, args.pty)
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print(f"PTY slave : {slave_path}")
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print(f"Симлинк : {args.pty} -> {slave_path}")
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print(f"Запустите : python3 -m rfg_adc_plotter.main {args.pty}")
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print("Ctrl+C для остановки.\n")
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if args.speed > 0:
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bytes_per_sec = args.baud / 10.0 * args.speed
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delay_per_byte = 1.0 / bytes_per_sec
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else:
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delay_per_byte = 0.0
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chunk_size = 4096
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loop = 0
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try:
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while True:
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loop += 1
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print(f"[loop {loop}] {args.file}")
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with open(args.file, "rb") as handle:
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while True:
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chunk = handle.read(chunk_size)
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if not chunk:
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break
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os.write(master_fd, chunk)
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if delay_per_byte > 0:
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time.sleep(delay_per_byte * len(chunk))
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except KeyboardInterrupt:
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print("\nОстановлено.")
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finally:
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try:
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os.unlink(args.pty)
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except Exception:
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pass
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try:
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os.close(master_fd)
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except Exception:
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pass
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if __name__ == "__main__":
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main()
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