feat：5g代码迁移&修改配置文件

scripts/boot/5g-dial.sh

@@ -7,23 +7,48 @@ source "${SCRIPT_DIR}/common.sh"
 
 STEP="5g-dial"
 
-run_dial() {
+read_detected_interface() {
-  local rc
+  local info_json="$1"
 
-  export TERM="${TERM:-xterm}"
+  if [[ ! -f "${info_json}" ]]; then
-  export LANG="${LANG:-C.UTF-8}"
+    return 1
-  export LC_ALL="${LC_ALL:-C.UTF-8}"
-
-  blitz_log "${STEP}" "dial-env" "start" "TERM=${TERM} LANG=${LANG} LC_ALL=${LC_ALL} interface=${BLITZ_5G_INTERFACE}" 0
-
-  if blitz_run "${STEP}" "dial" python3 rndis_dial.py --serial-port "${BLITZ_5G_SERIAL_PORT}" --interface "${BLITZ_5G_INTERFACE}"; then
-    return 0
   fi
 
+  python3 -c 'import json, sys; print((json.load(open(sys.argv[1], encoding="utf-8")).get("interface") or "").strip())' "${info_json}"
+}
+
+disable_interfaces() {
+  local raw_list="$1"
+  local iface
+  local nmcli_available=0
+
+  if [[ -z "${raw_list}" ]]; then
+    return 0
+  fi
+  if command -v nmcli >/dev/null 2>&1; then
+    nmcli_available=1
+  fi
+
+  for iface in ${raw_list//,/ }; do
+    if [[ -z "${iface}" ]]; then
+      continue
+    fi
+    blitz_log "${STEP}" "disable-interface" "start" "iface=${iface}" 0
+    if [[ "${nmcli_available}" -eq 1 ]]; then
+      nmcli device disconnect "${iface}" >/dev/null 2>&1 || true
+    fi
+    if ip link show dev "${iface}" >/dev/null 2>&1; then
+      if ip link set dev "${iface}" down; then
+        blitz_log "${STEP}" "disable-interface" "success" "iface=${iface}" 0
+      else
         rc=$?
-  blitz_log "${STEP}" "dial-retry" "start" "first dial attempt failed rc=${rc}; retrying after 3s" "${rc}"
+        blitz_log "${STEP}" "disable-interface" "failure" "iface=${iface}" "${rc}"
-  sleep 3
+        return "${rc}"
-  blitz_run "${STEP}" "dial-retry" python3 rndis_dial.py --serial-port "${BLITZ_5G_SERIAL_PORT}" --interface "${BLITZ_5G_INTERFACE}"
+      fi
+    else
+      blitz_log "${STEP}" "disable-interface" "success" "iface=${iface} not present, skipping" 0
+    fi
+  done
 }
 
 wait_for_serial() {
@@ -81,22 +106,53 @@ if [[ -z "${BLITZ_TIME_SERVER_IP}" ]]; then
   blitz_log "${STEP}" "precheck" "failure" "BLITZ_TIME_SERVER_IP is empty and no fallback could be derived" 1
   exit 1
 fi
-if [[ -z "${BLITZ_5G_INTERFACE:-}" ]]; then
-  blitz_log "${STEP}" "precheck" "failure" "BLITZ_5G_INTERFACE must not be empty" 1
-  exit 1
-fi
 
+disable_interfaces "${BLITZ_5G_DISABLE_INTERFACES:-}"
+
+if [[ -n "${BLITZ_5G_INTERFACE:-}" ]]; then
   route_output="$(blitz_route_ready "${BLITZ_TIME_SERVER_IP}" "${BLITZ_5G_INTERFACE}" || true)"
   if [[ -n "${route_output}" ]]; then
     blitz_log "${STEP}" "dial" "already_up" "target_ip=${BLITZ_TIME_SERVER_IP} interface=${BLITZ_5G_INTERFACE} route=${route_output}" 0
     exit 0
   fi
+else
+  blitz_log "${STEP}" "route-check" "info" "BLITZ_5G_INTERFACE is empty, skipping pre-dial route shortcut and using auto-detect mode" 0
+fi
 
 wait_for_serial "${BLITZ_5G_SERIAL_PORT}" "${BLITZ_5G_SERIAL_WAIT_SEC}"
 
+dial_cmd=(
+  python3
+  rndis_dial.py
+  --serial-port "${BLITZ_5G_SERIAL_PORT}"
+  --modem-subnet "${BLITZ_5G_MODEM_SUBNET}"
+)
+if [[ -n "${BLITZ_5G_INTERFACE:-}" ]]; then
+  dial_cmd+=(--interface "${BLITZ_5G_INTERFACE}")
+fi
+case "${BLITZ_5G_SKIP_DHCP:-0}" in
+  1|true|TRUE|yes|YES)
+    dial_cmd+=(--skip-dhcp)
+    ;;
+esac
+
 pushd "${BLITZ_5G_DIAL_DIR}" >/dev/null
-run_dial
+blitz_run "${STEP}" "dial" "${dial_cmd[@]}"
 popd >/dev/null
 
-wait_for_route "${BLITZ_TIME_SERVER_IP}" "${BLITZ_5G_ROUTE_WAIT_SEC}" "${BLITZ_5G_INTERFACE}"
+resolved_interface="${BLITZ_5G_INTERFACE:-}"
-blitz_log "${STEP}" "complete" "success" "5G dial completed and route is ready on ${BLITZ_5G_INTERFACE}" 0
+if [[ -z "${resolved_interface}" ]]; then
+  resolved_interface="$(read_detected_interface "${BLITZ_5G_INFO_JSON}" || true)"
+  if [[ -n "${resolved_interface}" ]]; then
+    blitz_log "${STEP}" "resolve-interface" "success" "resolved interface from ${BLITZ_5G_INFO_JSON}: ${resolved_interface}" 0
+  else
+    blitz_log "${STEP}" "resolve-interface" "failure" "failed to read detected interface from ${BLITZ_5G_INFO_JSON}" 1
+  fi
+fi
+
+if [[ -n "${resolved_interface}" ]]; then
+  wait_for_route "${BLITZ_TIME_SERVER_IP}" "${BLITZ_5G_ROUTE_WAIT_SEC}" "${resolved_interface}"
+  blitz_log "${STEP}" "complete" "success" "5G dial completed and route is ready on ${resolved_interface}" 0
+else
+  blitz_log "${STEP}" "complete" "success" "5G dial completed but route wait was skipped because no interface could be resolved; refer to rndis_dial.py logs" 0
+fi

scripts/boot/common.sh

@@ -52,9 +52,13 @@ blitz_load_boot_env() {
 
   export BLITZ_BOOT_DELAY_SEC="${BLITZ_BOOT_DELAY_SEC:-30}"
   export BLITZ_LOG_FILE="${BLITZ_LOG_FILE:-/var/log/blitz-robot/startup.log}"
-  export BLITZ_5G_DIAL_DIR="${BLITZ_5G_DIAL_DIR:-/home/nvidia/5g-test/5G}"
+  export BLITZ_5G_DIAL_DIR="${BLITZ_5G_DIAL_DIR:-${BOOT_SCRIPT_DIR}}"
   export BLITZ_5G_SERIAL_PORT="${BLITZ_5G_SERIAL_PORT:-/dev/ttyUSB7}"
-  export BLITZ_5G_INTERFACE="${BLITZ_5G_INTERFACE:-eth0}"
+  export BLITZ_5G_INTERFACE="${BLITZ_5G_INTERFACE:-}"
+  export BLITZ_5G_MODEM_SUBNET="${BLITZ_5G_MODEM_SUBNET:-192.168.224.0/22}"
+  export BLITZ_5G_SKIP_DHCP="${BLITZ_5G_SKIP_DHCP:-0}"
+  export BLITZ_5G_INFO_JSON="${BLITZ_5G_INFO_JSON:-${BLITZ_5G_DIAL_DIR}/modem_network_info.json}"
+  export BLITZ_5G_DISABLE_INTERFACES="${BLITZ_5G_DISABLE_INTERFACES:-}"
   export BLITZ_5G_SERIAL_WAIT_SEC="${BLITZ_5G_SERIAL_WAIT_SEC:-60}"
   export BLITZ_5G_ROUTE_WAIT_SEC="${BLITZ_5G_ROUTE_WAIT_SEC:-30}"
   export BLITZ_TIME_SERVER_IP="${BLITZ_TIME_SERVER_IP:-${default_time_server}}"

scripts/boot/modem_network_info.json

@@ -0,0 +1,9 @@
+{
+  "interface": "enx8c5508fedec7",
+  "ipv4": [
+    "192.168.225.74/22"
+  ],
+  "ipv6": [
+    "fe80::e1ff:36e7:82eb:438c/64"
+  ]
+}

scripts/boot/rndis_dial.py

@@ -0,0 +1,749 @@
+#!/usr/bin/env python3
+"""RM520N-GL RNDIS 自动拨号脚本。
+
+流程:
+1. 检测 USB 设备是否存在
+2. 打开 AT 口并检查 SIM 状态
+3. 配置 RNDIS 模式: AT+QCFG="usbnet",3
+4. 重启模块: AT+CFUN=1,1
+5. 等待模块重新枚举并识别 5G 网卡
+6. 如果网卡还没有 IPv4, 自动尝试 DHCP
+
+用法:
+    sudo python3 rndis_dial.py
+    sudo python3 rndis_dial.py --serial-port /dev/ttyUSB7
+    sudo python3 rndis_dial.py --interface eth0 #指定网口
+"""
+
+from __future__ import annotations
+
+import argparse
+import errno
+import ipaddress
+import json
+import os
+import select
+import shlex
+import shutil
+import subprocess
+import sys
+import termios
+import time
+import tty
+
+USB_ID = "2c7c:0801"
+DEFAULT_SERIAL_PORT = "/dev/ttyUSB7" #串口设备节点
+DEFAULT_BAUD_RATE = 115200
+CHECK_INTERVAL = 2
+SERIAL_READ_TIMEOUT = 0.2
+SERIAL_POLL_INTERVAL = 0.1
+SERIAL_SETTLE_DELAY = 0.3
+AT_SYNC_RETRIES = 3
+AT_SYNC_TIMEOUT = 2.5
+# 示例地址 192.168.225.38/22 所在网段。
+# 拨号成功后会用这个网段来最终确认哪个接口是 5G 模组。
+DEFAULT_MODEM_SUBNET = "192.168.224.0/22"
+DEFAULT_MODEM_GATEWAY = "192.168.225.1"
+DEFAULT_PUBLIC_TARGETS = ("81.70.156.140", "106.55.173.235")
+DEFAULT_INFO_JSON = "modem_network_info.json"
+SKIP_INTERFACES = {"lo", "docker0", "l4tbr0"}
+BAUD_RATE_MAP = {
+    9600: termios.B9600,
+    19200: termios.B19200,
+    38400: termios.B38400,
+    57600: termios.B57600,
+    115200: termios.B115200,
+}
+
+
+def run_cmd(cmd, timeout=30, check=False):
+    print(f"[CMD] {format_shell_cmd(cmd)}")
+    result = subprocess.run(
+        cmd,
+        capture_output=True,
+        text=True,
+        timeout=timeout,
+        check=False,
+    )
+    output = (result.stdout or "") + (result.stderr or "")
+    if check and result.returncode != 0:
+        raise RuntimeError(f"命令执行失败: {' '.join(cmd)}\n{output.strip()}")
+    return result.returncode, output.strip()
+
+
+def format_shell_cmd(cmd):
+    """把命令参数格式化成可直接阅读的 shell 形式。"""
+    return " ".join(shlex.quote(part) for part in cmd)
+
+
+def require_root():
+    if os.geteuid() != 0:
+        print("[FAIL] 请使用 sudo 运行此脚本")
+        sys.exit(1)
+
+
+def require_commands():
+    missing = [cmd for cmd in ("lsusb", "ip") if shutil.which(cmd) is None]
+    if missing:
+        print(f"[FAIL] 缺少系统命令: {', '.join(missing)}")
+        sys.exit(1)
+
+
+def usb_device_present():
+    # 1. 第一次检测 lsusb，确认模块已经被系统识别。
+    """通过 lsusb 检查模块是否已经被系统识别。"""
+    code, output = run_cmd(["lsusb"], timeout=10)
+    if code != 0:
+        return False, output
+
+    for line in output.splitlines():
+        if USB_ID in line:
+            return True, line.strip()
+    return False, output
+
+
+def wait_for_usb_device(expected_present, timeout):
+    """等待模块 USB 设备下线或重新上线。"""
+    deadline = time.time() + timeout
+    last_seen = ""
+    while time.time() < deadline:
+        present, detail = usb_device_present()
+        last_seen = detail
+        if present == expected_present:
+            return True, detail
+        time.sleep(CHECK_INTERVAL)
+    return False, last_seen
+
+
+def wait_for_path(path, timeout):
+    """等待串口节点或其他路径重新出现。"""
+    deadline = time.time() + timeout
+    while time.time() < deadline:
+        if os.path.exists(path):
+            return True
+        time.sleep(1)
+    return False
+
+
+def normalize_serial_output(text):
+    """整理串口原始输出，便于后续匹配关键字。"""
+    cleaned = text.replace("\r", "\n")
+    return "\n".join(line for line in cleaned.splitlines() if line.strip()).strip()
+
+
+def serial_response_complete(text):
+    if not text:
+        return False
+
+    for line in reversed(text.splitlines()):
+        stripped = line.strip()
+        if stripped == "OK":
+            return True
+        if "ERROR" in stripped:
+            return True
+    return False
+
+
+class RawSerialSession:
+    """使用 Python 标准库直接控制 Linux 串口，尽量贴近 stty/raw 行为。"""
+
+    def __init__(self, port, baudrate):
+        if baudrate not in BAUD_RATE_MAP:
+            raise RuntimeError(f"不支持的波特率: {baudrate}")
+
+        self.port = port
+        self.fd = None
+        self._original_attrs = None
+
+        try:
+            self.fd = os.open(port, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
+            self._original_attrs = termios.tcgetattr(self.fd)
+            tty.setraw(self.fd, when=termios.TCSANOW)
+
+            attrs = termios.tcgetattr(self.fd)
+            attrs[0] = 0
+            attrs[1] = 0
+            attrs[2] &= ~(termios.PARENB | termios.CSTOPB | termios.CSIZE)
+            attrs[2] |= termios.CS8 | termios.CLOCAL | termios.CREAD
+            attrs[3] = 0
+            attrs[4] = BAUD_RATE_MAP[baudrate]
+            attrs[5] = BAUD_RATE_MAP[baudrate]
+            attrs[6][termios.VMIN] = 0
+            attrs[6][termios.VTIME] = 0
+            termios.tcsetattr(self.fd, termios.TCSANOW, attrs)
+            termios.tcflush(self.fd, termios.TCIOFLUSH)
+        except OSError as exc:
+            self.close()
+            raise RuntimeError(f"无法打开串口 {port}: {exc}") from exc
+
+    @property
+    def is_open(self):
+        return self.fd is not None
+
+    def reset_input_buffer(self):
+        if self.fd is not None:
+            termios.tcflush(self.fd, termios.TCIFLUSH)
+
+    def reset_output_buffer(self):
+        if self.fd is not None:
+            termios.tcflush(self.fd, termios.TCOFLUSH)
+
+    def write(self, data):
+        if self.fd is None:
+            raise OSError("串口未打开")
+
+        sent = 0
+        while sent < len(data):
+            try:
+                written = os.write(self.fd, data[sent:])
+            except BlockingIOError:
+                time.sleep(SERIAL_POLL_INTERVAL)
+                continue
+            if written <= 0:
+                raise OSError("串口写入返回 0 字节")
+            sent += written
+
+    def flush(self):
+        if self.fd is not None:
+            termios.tcdrain(self.fd)
+
+    def read_chunk(self, timeout, size=4096):
+        if self.fd is None:
+            return b""
+
+        ready, _, _ = select.select([self.fd], [], [], timeout)
+        if not ready:
+            return b""
+
+        try:
+            return os.read(self.fd, size)
+        except BlockingIOError:
+            return b""
+
+    def close(self):
+        if self.fd is None:
+            return
+
+        fd = self.fd
+        self.fd = None
+
+        if self._original_attrs is not None:
+            try:
+                termios.tcsetattr(fd, termios.TCSANOW, self._original_attrs)
+            except termios.error:
+                pass
+        os.close(fd)
+
+
+def read_serial_output(session, timeout, allow_disconnect=False):
+    """在给定时间窗口内读取 AT 响应，直到出现结束标记或超时。"""
+    deadline = time.time() + timeout
+    chunks = []
+    saw_terminal_line = False
+    last_data_time = None
+
+    while time.time() < deadline:
+        try:
+            chunk = session.read_chunk(timeout=min(SERIAL_READ_TIMEOUT, max(deadline - time.time(), 0)))
+        except OSError as exc:
+            if allow_disconnect and exc.errno in (errno.EIO, errno.ENODEV, errno.EBADF):
+                break
+            raise RuntimeError(f"读取串口响应失败: {exc}") from exc
+
+        if chunk:
+            chunks.append(chunk.decode(errors="ignore"))
+            last_data_time = time.time()
+            current_text = normalize_serial_output("".join(chunks))
+            if serial_response_complete(current_text):
+                saw_terminal_line = True
+            continue
+
+        if saw_terminal_line and last_data_time is not None and time.time() - last_data_time >= SERIAL_SETTLE_DELAY:
+            break
+
+        time.sleep(SERIAL_POLL_INTERVAL)
+
+    return normalize_serial_output("".join(chunks))
+
+
+def open_serial_session(port):
+    """打开 AT 串口会话，后续在同一连接里顺序发送多条命令。"""
+    ser = RawSerialSession(port=port, baudrate=DEFAULT_BAUD_RATE)
+    time.sleep(0.2)
+    ser.reset_input_buffer()
+    ser.reset_output_buffer()
+    return ser
+
+
+def execute_serial_step(ser, command, expect=None, timeout=3, allow_disconnect=False):
+    """在当前串口会话里发送一条 AT 命令并校验响应。"""
+    print(f"[AT] {command}")
+    try:
+        ser.reset_input_buffer()
+        ser.write((command + "\r").encode())
+        ser.flush()
+    except OSError as exc:
+        raise RuntimeError(f"AT 命令 `{command}` 发送失败: {exc}") from exc
+
+    response = read_serial_output(ser, timeout=timeout, allow_disconnect=allow_disconnect)
+
+    if response:
+        print(response)
+    else:
+        print("(无响应)")
+
+    if "ERROR" in response:
+        raise RuntimeError(f"AT 命令 `{command}` 执行失败: {response}")
+    if expect and expect not in response and not allow_disconnect:
+        raise RuntimeError(f"AT 命令 `{command}` 响应异常: {response or '空响应'}")
+    return response
+
+
+def synchronize_at_channel(ser):
+    """某些模组 AT 口在刚打开时需要先用 AT 做一次预热。"""
+    last_error = None
+
+    for attempt in range(1, AT_SYNC_RETRIES + 1):
+        try:
+            print(f"[INFO] 预热 AT 通道，第 {attempt} 次")
+            response = execute_serial_step(ser, "AT", expect="OK", timeout=AT_SYNC_TIMEOUT)
+            if "OK" in response:
+                return
+        except RuntimeError as exc:
+            last_error = exc
+            time.sleep(0.5)
+
+    if last_error is not None:
+        raise RuntimeError(
+            "AT 通道预热失败，请确认串口是否是 AT 命令口，例如 /dev/ttyUSB2"
+        ) from last_error
+    raise RuntimeError("AT 通道预热失败")
+
+
+def run_serial_steps(port, steps):
+    """在同一个串口会话里顺序执行多条 AT 命令。"""
+    ser = None
+
+    try:
+        ser = open_serial_session(port)
+        synchronize_at_channel(ser)
+        for step in steps:
+            execute_serial_step(
+                ser,
+                step["command"],
+                expect=step.get("expect"),
+                timeout=step.get("timeout", 3),
+                allow_disconnect=step.get("allow_disconnect", False),
+            )
+    finally:
+        if ser is not None and ser.is_open:
+            ser.close()
+
+def configure_rndis(port):
+    # 2. 用 Python 串口库在同一会话里顺序执行拨号相关 AT 命令。
+    """切换到 RNDIS 模式并触发模块重启。"""
+    if not wait_for_path(port, timeout=30):
+        raise RuntimeError(f"串口不存在: {port}")
+
+    print(f"[OK] 串口已打开: {port}")
+    run_serial_steps(
+        port,
+        [
+            {"command": "AT+CPIN?", "expect": "READY", "timeout": 4},
+            {"command": 'AT+QCFG="usbnet",3', "expect": "OK", "timeout": 5},
+            {"command": "AT+CFUN=1,1", "timeout": 4, "allow_disconnect": True},
+        ],
+    )
+
+
+def get_interfaces():
+    """列出当前系统中的接口，过滤明显无关的本地接口。"""
+    interfaces = []
+    try:
+        for name in os.listdir("/sys/class/net"):
+            if name in SKIP_INTERFACES or is_usb_gadget(name):
+                continue
+            interfaces.append(name)
+    except FileNotFoundError:
+        return []
+    return sorted(interfaces)
+
+
+def is_usb_gadget(iface):
+    """过滤 Jetson 自己暴露出去的 gadget 网卡。"""
+    sysfs_path = f"/sys/class/net/{iface}"
+    if not os.path.exists(sysfs_path):
+        return False
+    return "/gadget/" in os.path.realpath(sysfs_path)
+
+
+def is_usb_network_interface(iface):
+    """判断接口是否来自 USB 设备。"""
+    device_path = f"/sys/class/net/{iface}/device"
+    if not os.path.exists(device_path):
+        return False
+    real_path = os.path.realpath(device_path)
+    return "/usb" in real_path
+
+
+def get_ipv4_addrs():
+    """返回所有接口的 IPv4/CIDR 信息。"""
+    code, output = run_cmd(["ip", "-o", "-4", "addr", "show"], timeout=10)
+    if code != 0:
+        return {}
+
+    ipv4_addrs = {}
+    for line in output.splitlines():
+        parts = line.split()
+        if len(parts) >= 4:
+            iface = parts[1]
+            ipv4_addrs.setdefault(iface, []).append(parts[3])
+    return ipv4_addrs
+
+
+def get_ipv6_addrs():
+    """返回所有接口的 IPv6/CIDR 信息。"""
+    code, output = run_cmd(["ip", "-o", "-6", "addr", "show"], timeout=10)
+    if code != 0:
+        return {}
+
+    ipv6_addrs = {}
+    for line in output.splitlines():
+        parts = line.split()
+        if len(parts) >= 4:
+            iface = parts[1]
+            ipv6_addrs.setdefault(iface, []).append(parts[3])
+    return ipv6_addrs
+
+
+def interface_priority(iface):
+    if iface.startswith("wwan"):
+        return 0
+    if iface.startswith("enx"):
+        return 1
+    if iface.startswith("usb"):
+        return 2
+    return 10
+
+
+def list_usb_network_candidates(explicit_iface=None):
+    """列出拨号前可尝试的 USB 网卡候选项。
+
+    这里不靠固定网口名确认 5G 模组，只是在还没有 IP 的时候先缩小范围。
+    真正确认模组接口，会在 DHCP 之后根据 IP 网段判断。
+    """
+    candidates = []
+
+    for iface in get_interfaces():
+        if explicit_iface and iface != explicit_iface:
+            continue
+        if not is_usb_network_interface(iface):
+            continue
+        candidates.append((interface_priority(iface), iface))
+
+    if not candidates:
+        return []
+
+    candidates.sort()
+    return [iface for _, iface in candidates]
+
+
+def ip_in_subnet(ip_cidr, subnet):
+    """判断接口地址是否落在指定网段内。"""
+    try:
+        return ipaddress.ip_interface(ip_cidr).ip in ipaddress.ip_network(subnet, strict=False)
+    except ValueError:
+        return False
+
+
+def find_interface_by_subnet(modem_subnet, explicit_iface=None):
+    """拨号成功后，通过 IP 网段确认 5G 模组网卡。"""
+    candidates = []
+    for iface, addrs in get_ipv4_addrs().items():
+        if iface in SKIP_INTERFACES or is_usb_gadget(iface):
+            continue
+        if not is_usb_network_interface(iface):
+            continue
+        if explicit_iface and iface != explicit_iface:
+            continue
+
+        matched_addrs = [addr for addr in addrs if ip_in_subnet(addr, modem_subnet)]
+        if matched_addrs:
+            candidates.append((interface_priority(iface), iface, matched_addrs))
+
+    if not candidates:
+        return None, []
+
+    candidates.sort()
+    _, iface, matched_addrs = candidates[0]
+    return iface, matched_addrs
+
+
+def wait_for_usb_candidates(explicit_iface=None, timeout=90):
+    """等待模块枚举出 USB 网卡候选项。"""
+    deadline = time.time() + timeout
+    while time.time() < deadline:
+        candidates = list_usb_network_candidates(explicit_iface=explicit_iface)
+        if candidates:
+            return candidates
+        time.sleep(CHECK_INTERVAL)
+    return []
+
+
+def bring_interface_up(iface):
+    code, output = run_cmd(["ip", "link", "set", "dev", iface, "up"], timeout=10)
+    if code != 0:
+        raise RuntimeError(f"拉起网卡失败: {iface}\n{output}")
+
+
+def renew_dhcp(iface):
+    dhclient = shutil.which("dhclient")
+    udhcpc = shutil.which("udhcpc")
+
+    if dhclient:
+        print(f"[INFO] 使用 dhclient 为 {iface} 获取 IP")
+        code, output = run_cmd(["dhclient", "-1", "-v", iface], timeout=45)
+        return code == 0, output
+
+    if udhcpc:
+        print(f"[INFO] 使用 udhcpc 为 {iface} 获取 IP")
+        code, output = run_cmd(["udhcpc", "-n", "-q", "-i", iface], timeout=45)
+        return code == 0, output
+
+    return False, "系统中未找到 dhclient 或 udhcpc"
+
+
+def ensure_ipv4(iface):
+    """为指定接口申请 IPv4 地址。"""
+    ipv4_addrs = get_ipv4_addrs().get(iface, [])
+    if ipv4_addrs:
+        return ipv4_addrs
+
+    bring_interface_up(iface)
+    ok, output = renew_dhcp(iface)
+    if output:
+        print(output)
+    if not ok:
+        return []
+
+    return get_ipv4_addrs().get(iface, [])
+
+
+def acquire_modem_interface(modem_subnet, explicit_iface=None):
+    """通过 DHCP + IP 网段识别真正的模组接口。"""
+    iface, matched_addrs = find_interface_by_subnet(
+        modem_subnet,
+        explicit_iface=explicit_iface,
+    )
+    if iface:
+        return iface, matched_addrs
+
+    candidates = list_usb_network_candidates(explicit_iface=explicit_iface)
+    if not candidates:
+        raise RuntimeError("未找到可尝试 DHCP 的 USB 网卡候选项")
+
+    print(f"[INFO] 当前 USB 网卡候选项: {', '.join(candidates)}")
+
+    for iface in candidates:
+        print(f"[INFO] 尝试为 {iface} 获取 IPv4")
+        ensure_ipv4(iface)
+
+        matched_iface, matched_addrs = find_interface_by_subnet(
+            modem_subnet,
+            explicit_iface=explicit_iface,
+        )
+        if matched_iface:
+            return matched_iface, matched_addrs
+
+    return None, []
+
+
+def print_interface_status(iface):
+    # 3. 拨号成功后，打印 ip/ifconfig，确认模组网口和地址。
+    print(f"[OK] 检测到 5G 网卡: {iface}")
+
+    code, output = run_cmd(["ip", "-4", "addr", "show", "dev", iface], timeout=10)
+    if code == 0 and output:
+        print(output)
+
+    if shutil.which("ifconfig"):
+        code, ifconfig_output = run_cmd(["ifconfig", iface], timeout=10)
+        if code == 0 and ifconfig_output:
+            print("\n===== ifconfig =====")
+            print(ifconfig_output)
+
+
+def save_interface_info(iface, output_file=DEFAULT_INFO_JSON):
+    """把网口名称、IPv4、IPv6 保存到 JSON 文件。"""
+    data = {
+        "interface": iface,
+        "ipv4": get_ipv4_addrs().get(iface, []),
+        "ipv6": get_ipv6_addrs().get(iface, []),
+    }
+
+    with open(output_file, "w", encoding="utf-8") as json_file:
+        json.dump(data, json_file, ensure_ascii=False, indent=2)
+
+    print(f"[OK] 网口信息已保存到 {output_file}")
+
+
+def ping_target(iface, target, count=3, timeout=15):
+    """通过指定网口 ping 一个目标。"""
+    code, output = run_cmd(
+        ["ping", "-I", iface, "-c", str(count), "-W", "3", target],
+        timeout=timeout,
+    )
+    return code == 0, output
+
+
+def print_ping_summary(output):
+    """只打印 ping 的关键结果。"""
+    for line in output.splitlines():
+        if "packets transmitted" in line or "rtt " in line or "Destination " in line:
+            print(line)
+
+
+def verify_connectivity(iface, gateway=DEFAULT_MODEM_GATEWAY, targets=DEFAULT_PUBLIC_TARGETS, retry_interval=3, max_wait=45):
+    # 4. 最后先 ping 模组网关，再重试公网连通性。
+    """先测模组网关，再轮询公网目标地址。"""
+    ok, output = ping_target(iface, gateway, count=3, timeout=15)
+    if ok:
+        print(f"[OK] {iface} 可到达模组网关 {gateway}")
+        print_ping_summary(output)
+    else:
+        print(f"[WARN] {iface} 无法到达模组网关 {gateway}")
+        if output:
+            print(output)
+        return False
+
+    deadline = time.time() + max_wait
+    attempt = 1
+    while True:
+        for target in targets:
+            ok, output = ping_target(iface, target, count=3, timeout=15)
+            if ok:
+                print(f"[OK] {iface} 可通过 {target}")
+                print_ping_summary(output)
+                return True
+
+            print(f"[WARN] 第 {attempt} 次 Ping {target} 失败")
+            if output:
+                print_ping_summary(output)
+
+        if time.time() >= deadline:
+            print(f"[WARN] {iface} 在 {max_wait} 秒内仍无法连通 {', '.join(targets)}")
+            return False
+
+        attempt += 1
+        time.sleep(retry_interval)
+
+
+def ping_via_interface(iface, targets=DEFAULT_PUBLIC_TARGETS):
+    """保留原调用点，内部走完整连通性检查。"""
+    return verify_connectivity(iface, targets=targets)
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(description="RM520N-GL RNDIS 自动拨号脚本")
+    parser.add_argument(
+        "--serial-port",
+        default=DEFAULT_SERIAL_PORT,
+        help=f"AT 串口路径，默认 {DEFAULT_SERIAL_PORT}",
+    )
+    parser.add_argument(
+        "--interface",
+        help="指定期望的 5G 网卡名，例如 eth0",
+    )
+    parser.add_argument(
+        "--modem-subnet",
+        default=DEFAULT_MODEM_SUBNET,
+        help=f"拨号成功后用于识别模组接口的 IPv4 网段，默认 {DEFAULT_MODEM_SUBNET}",
+    )
+    parser.add_argument(
+        "--skip-dhcp",
+        action="store_true",
+        help="只等待 USB 网卡出现，不主动申请 IPv4",
+    )
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+    require_root()
+    require_commands()
+
+    print("===== RM520N-GL RNDIS 自动拨号 =====")
+    print(f"[INFO] 目标模组网段: {args.modem_subnet}")
+
+    #1.检测 lsusb，确认是否识别到模块
+    present, detail = usb_device_present()
+    if not present:
+        print(f"[FAIL] 未检测到模块 USB 设备 {USB_ID}")
+        if detail:
+            print(detail)
+        sys.exit(1)
+
+    print(f"[OK] 检测到 USB 设备: {detail}")
+    print(f"[INFO] 使用 AT 口: {args.serial_port}")
+
+    #2.进行 Python 串口拨号
+    try:
+        configure_rndis(args.serial_port)
+
+        print("[INFO] 已发送 AT+CFUN=1,1，等待模块重启")
+        disappeared, _ = wait_for_usb_device(expected_present=False, timeout=25)
+        if disappeared:
+            print("[OK] 模块已下线，继续等待重新枚举")
+        else:
+            print("[WARN] 未观察到模块下线，继续等待重新枚举")
+
+        reappeared, detail = wait_for_usb_device(expected_present=True, timeout=90)
+        if not reappeared:
+            print(f"[FAIL] 模块重启后未重新枚举: {USB_ID}")
+            sys.exit(1)
+
+        print(f"[OK] 模块已重新枚举: {detail}")
+
+        candidates = wait_for_usb_candidates(explicit_iface=args.interface, timeout=90)
+        if not candidates:
+            print("[FAIL] 未检测到 5G 模组枚举出的 USB 网卡")
+            sys.exit(1)
+
+        if args.skip_dhcp:
+            print(f"[INFO] 当前 USB 网卡候选项: {', '.join(candidates)}")
+            iface, ipv4_addrs = find_interface_by_subnet(
+                args.modem_subnet,
+                explicit_iface=args.interface,
+            )
+            if not iface:
+                print(f"[WARN] 当前还没有接口拿到目标网段 {args.modem_subnet} 的地址")
+                sys.exit(1)
+        else:
+            iface, ipv4_addrs = acquire_modem_interface(
+                args.modem_subnet,
+                explicit_iface=args.interface,
+            )
+            if not iface:
+                print(f"[FAIL] 未找到落在目标网段 {args.modem_subnet} 内的模组接口")
+                sys.exit(1)
+
+        print_interface_status(iface)
+
+        if ipv4_addrs:
+            for addr in ipv4_addrs:
+                print(f"[OK] {iface} 已获取 IPv4: {addr}")
+            save_interface_info(iface)
+            ping_via_interface(iface)
+            print(f"[DONE] RNDIS 拨号完成，可执行: sudo python3 speed_test.py {iface}")
+            return
+
+        print(f"[WARN] {iface} 已出现，但还没有 IPv4 地址")
+        print(f"[INFO] 可手动检查: ip addr show {iface}")
+        sys.exit(1)
+    except (RuntimeError, subprocess.TimeoutExpired) as exc:
+        print(f"[FAIL] {exc}")
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    main()

scripts/boot/robot-boot.env

@@ -1,12 +1,15 @@
 # Boot-time settings for the robot-side autostart chain.
 # Override machine-specific values in robot-boot.env.local.
 
-BLITZ_BOOT_DELAY_SEC="60"
+BLITZ_BOOT_DELAY_SEC="30"
 BLITZ_LOG_FILE="/var/log/blitz-robot/startup.log"
 
-BLITZ_5G_DIAL_DIR="/home/nvidia/5g-test/5G"
+BLITZ_5G_DIAL_DIR="${OMNISOCKETGO_ROOT}/scripts/boot"
-BLITZ_5G_SERIAL_PORT="/dev/ttyUSB7"
+BLITZ_5G_SERIAL_PORT="/dev/ttyUSB2"
-BLITZ_5G_INTERFACE="eth0"
+BLITZ_5G_INTERFACE=""
+BLITZ_5G_MODEM_SUBNET="192.168.224.0/22"
+BLITZ_5G_SKIP_DHCP="0"
+BLITZ_5G_INFO_JSON="${OMNISOCKETGO_ROOT}/scripts/boot/modem_network_info.json"
 BLITZ_5G_SERIAL_WAIT_SEC="60"
 BLITZ_5G_ROUTE_WAIT_SEC="30"