Method start

gps_manager.py:244–258

Start GPS reading thread.

(self)

                return path

    # Stage 3: raw device nodes — covers USB serial, native UART, and Raspberry
    # Pi serial ports (/dev/ttyAMA0, /dev/serial0) that have no by-id symlink.
    candidates = []
    for pattern in ('/dev/ttyACM*', '/dev/ttyUSB*', '/dev/ttyS[0-9]*', '/dev/ttyAMA*'):
        candidates.extend(glob.glob(pattern))
    for fixed in ('/dev/serial0', '/dev/serial1'):
        if os.path.exists(fixed):
            candidates.append(fixed)
    seen = set()
    for dev in sorted(candidates):
        real = os.path.realpath(dev)
        if dev in exclude or real in exclude or real in seen:
            continue
        seen.add(real)
        if _probe_nmea(dev):
            return dev

    return None