feat(ui): 升级界面布局与波特率输入优化

- 窗口标题去除"(串口/Cat1 TCP)"后缀
- 浏览按钮固定窄宽(70px), 文件地址框随布局加宽
- 波特率下拉改为可编辑(setEditable), 候选项与主界面串口连接区一致(115200~1000000)
- 文件编码修正: 修复编辑过程产生的GBK污染, 统一UTF-8

gateway_config.py

@@ -10,6 +10,7 @@ import time
 import struct
 import zlib
 import threading
+import socket
 
 from PyQt5.QtWidgets import (
     QApplication, QMainWindow, QWidget, QVBoxLayout, QHBoxLayout,
@@ -126,6 +127,176 @@ class SerialThread(QThread):
         self.wait()
 
 
+class TcpServerThread(QThread):
+    """TCP服务线程: 监听端口, 等待网关Cat1模组(AT+LIPOPEN)主动连入后透传升级帧。"""
+    client_connected = pyqtSignal(str)
+    client_disconnected = pyqtSignal(str, bool)   # (client_ip, was_upgrade_session)
+    session_resumed = pyqtSignal(str)   # (client_ip) upgrade session (re)locked
+    ip_list_changed = pyqtSignal(list)   # 当前所有已连接客户端IP
+    data_received_raw = pyqtSignal(bytes)
+    listen_error = pyqtSignal(str)
+
+    def __init__(self, port):
+        super().__init__()
+        self.port = port
+        self.running = True
+        self._hexbufs = {}   # per-conn hex tail buffer (device uplink is ASCII hex text)
+        self.sock = None          # listen socket
+        self.conn = None          # upgrade session client (first valid ACK), None = not locked
+        self.conn_lock = threading.Lock()
+        self._conns = {}          # {sock: ip} all connected clients
+        self.expect_mac = None   # target DevMac for ACK sniff (set by upgrade dialog); None = accept first valid ACK
+        self.target_ip = None   # 握手成功的目标IP(升级包只发它)
+        self._errsince = {}   # conn -> first OSError time (5s grace before declaring dead)
+
+    def run(self):
+        try:
+            self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+            self.sock.bind(('0.0.0.0', self.port))
+            self.sock.listen(5)
+            self.sock.settimeout(0.1)
+        except Exception as e:
+            self.listen_error.emit(str(e))
+            return
+        while self.running:
+            # 1) accept new clients (non-blocking poll)
+            try:
+                conn, addr = self.sock.accept()
+                conn.settimeout(0.05)
+                try:
+                    conn.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+                except Exception:
+                    pass
+                with self.conn_lock:
+                    self._conns[conn] = addr[0]
+                self.client_connected.emit(addr[0])
+                self._push_ip_list()
+            except socket.timeout:
+                pass
+            except OSError:
+                break
+            # 2) poll every client for data
+            with self.conn_lock:
+                items = list(self._conns.items())
+            dead = []
+            for conn, ip in items:
+                try:
+                    data = conn.recv(4096)
+                    self._errsince.pop(conn, None)
+                except socket.timeout:
+                    continue
+                except OSError:
+                    t0 = self._errsince.get(conn)
+                    if t0 is None:
+                        self._errsince[conn] = time.monotonic()
+                        continue
+                    if time.monotonic() - t0 < 5.0:
+                        continue
+                    dead.append((conn, self.target_ip == ip))
+                    continue
+                if not data:
+                    dead.append((conn, self.target_ip == ip))
+                    continue
+                if self.target_ip is not None and ip != self.target_ip:
+                    continue   # session locked: only locked client's data is processed
+                self._sniff_ack_lock(conn, ip, data)
+                self.data_received_raw.emit(self._decode_hex_conn(conn, data))
+            # 3) clean up disconnected clients
+            for conn, was_session in dead:
+                with self.conn_lock:
+                    ip = self._conns.pop(conn, None)
+                    if self.conn is conn:
+                        self.conn = None
+                self._hexbufs.pop(id(conn), None)
+                try:
+                    conn.close()
+                except Exception:
+                    pass
+                self.client_disconnected.emit(ip if ip else '', was_session)
+                if was_session:
+                    self.target_ip = None
+                self._push_ip_list()
+        try:
+            self.sock.close()
+        except Exception:
+            pass
+
+    def _sniff_ack_lock(self, conn, ip, data):
+        """握手阶段(目标未定): 嗅探首个合法 ACK(0x01,len3,总14) 或 REQ(0x02,len4,总15) 帧(0x7D+CRC),
+        且帧内MAC与目标设备MAC一致时, 选定该IP为升级目标。"""
+        if self.target_ip is not None:
+            return
+        for i in range(len(data) - 13):
+            if data[i] != 0x7D:
+                continue
+            cmd = data[i + 7]
+            plen = data[i + 8]
+            is_ack = (cmd == 0x01 and plen == 0x03)
+            is_req = (cmd == 0x02 and plen == 0x04)
+            if not (is_ack or is_req):
+                continue
+            flen = 14 if is_ack else 15
+            if i + flen > len(data):
+                break
+            frame = data[i:i + flen]
+            if crc16_modbus(frame[:-2]) != (frame[-2] | (frame[-1] << 8)):
+                continue
+            if self.expect_mac is not None and bytes(frame[1:7]) != bytes(self.expect_mac):
+                continue   # 非目标设备的握手应答(旧固件无MAC过滤): 不选定
+            with self.conn_lock:
+                if self.target_ip is None:
+                    self.target_ip = ip
+            self.session_resumed.emit(ip)
+            return
+
+    def _decode_hex_conn(self, conn, data):
+        """Device uplink is ASCII hex text: stream-decode to binary (keep odd tail), per connection."""
+        key = id(conn)
+        buf = self._hexbufs.get(key, b"") + data
+        n = len(buf) - (len(buf) % 2)
+        self._hexbufs[key] = buf[n:]
+        try:
+            return bytes.fromhex(buf[:n].decode('ascii'))
+        except ValueError:
+            self._hexbufs[key] = b""   # invalid chars: drop and resync
+            return b""
+
+    def send_data(self, data):
+        """握手阶段(目标未定)广播所有连接; 目标选定后只发目标IP的连接。"""
+        with self.conn_lock:
+            if self.target_ip is not None:
+                targets = [c for c, ip in self._conns.items() if ip == self.target_ip]
+            else:
+                targets = list(self._conns.keys())
+        ok = False
+        for conn in targets:
+            try:
+                conn.sendall(data)
+                ok = True
+            except Exception:
+                pass
+        return ok
+
+    def _push_ip_list(self):
+        with self.conn_lock:
+            ips = sorted(set(self._conns.values()))
+        self.ip_list_changed.emit(ips)
+
+    def release_session(self):
+        """升级结束(完成/取消/关闭): 清除目标IP, 恢复广播模式。"""
+        with self.conn_lock:
+            self.target_ip = None
+
+    def is_client_connected(self):
+        with self.conn_lock:
+            return len(self._conns) > 0
+
+    def stop(self):
+        self.running = False
+        self.wait(3000)
+
+
 class GatewayConfigTool(QMainWindow):
     def __init__(self):
         super().__init__()
@@ -144,7 +315,7 @@ class GatewayConfigTool(QMainWindow):
         self.refresh_ports()
 
     def init_ui(self):
-        self.setWindowTitle("网关配置工具(宽带版 V1.2.2)")
+        self.setWindowTitle("网关配置工具(宽带版 V1.3.0)")
         self.setWindowIcon(QIcon(resource_path("物联网网关.png")))
         self.setMinimumSize(940, 640)
         self.resize(1000, 700)
@@ -611,7 +782,7 @@ class UpgradeDialog(QDialog):
     def __init__(self, main_window):
         super().__init__(main_window)
         self.main = main_window
-        self.setWindowTitle("设备升级 - 通用串口升级协议V1.1")
+        self.setWindowTitle("设备升级 - 通用升级协议V1.1")
         self.setModal(False)
         self.resize(720, 520)
 
@@ -622,6 +793,12 @@ class UpgradeDialog(QDialog):
         self._sent = set()
         self._buf = b""
         self._timer = QTimer()
+        self.channel = 'serial'       # 升级通道: serial / tcp
+        self.tcp_thread = None
+        self._window = 8              # TCP模式每批包数(窗口流控)
+        self._window_start = 0        # 当前批次首包序号(超时重发用)
+        self._retry_cnt = 0           # TCP模式超时重发计数
+        self._resume_base = 0         # 断点续传基数(设备已收包数)
         self._timer.setSingleShot(True)
         self._timer.timeout.connect(self._on_timeout)
 
@@ -639,6 +816,7 @@ class UpgradeDialog(QDialog):
         self.fw_edit.setPlaceholderText("选择固件文件...")
         cfg_layout.addWidget(self.fw_edit, 0, 1)
         btn_browse = QPushButton("浏览")
+        btn_browse.setFixedWidth(70)
         btn_browse.clicked.connect(self._choose_file)
         cfg_layout.addWidget(btn_browse, 0, 2)
 
@@ -651,15 +829,63 @@ class UpgradeDialog(QDialog):
         mac_hint.setStyleSheet("color:#909090;")
         cfg_layout.addWidget(mac_hint, 1, 2)
 
+        # 通道选择 + TCP监听
+        cfg_layout.addWidget(QLabel("通道:"), 2, 0)
+        self.combo_channel = QComboBox()
+        self.combo_channel.addItems(["串口", "TCP(Cat1)"])
+        self.combo_channel.currentIndexChanged.connect(self._on_channel_changed)
+        cfg_layout.addWidget(self.combo_channel, 2, 1)
+        tcp_row = QHBoxLayout()
+        self.tcp_lbl = QLabel("TCP端口:")
+        tcp_row.addWidget(self.tcp_lbl)
+        self.tcp_port_edit = QLineEdit("8080")
+        self.tcp_port_edit.setFixedWidth(80)
+        tcp_row.addWidget(self.tcp_port_edit)
+        self.btn_tcp_listen = QPushButton("开始监听")
+        self.btn_tcp_listen.setFixedWidth(90)
+        self.btn_tcp_listen.clicked.connect(self._toggle_tcp_listen)
+        tcp_row.addWidget(self.btn_tcp_listen)
+        self.ip_lbl = QLabel("客户端:")
+        tcp_row.addWidget(self.ip_lbl)
+        self.ip_cmb = QComboBox()
+        self.ip_cmb.setFixedWidth(140)
+        tcp_row.addWidget(self.ip_cmb)
+        tcp_row.addStretch()
+        self.tcp_row_w = QWidget()
+        self.tcp_row_w.setLayout(tcp_row)
+        cfg_layout.addWidget(self.tcp_row_w, 2, 2)
+
+        # 串口参数行(串口通道): 串口选择/波特率/打开
+        serial_row = QHBoxLayout()
+        self.serial_cmb = QComboBox()
+        self.serial_cmb.setFixedWidth(150)
+        serial_row.addWidget(self.serial_cmb)
+        self.baud_cmb = QComboBox()
+        self.baud_cmb.setEditable(True)
+        self.baud_cmb.addItems(["115200", "230400", "460800", "500000", "921600", "1000000"])
+        self.baud_cmb.setCurrentText("500000")
+        self.baud_cmb.setFixedWidth(90)
+        serial_row.addWidget(self.baud_cmb)
+        self.btn_serial_open = QPushButton("打开串口")
+        self.btn_serial_open.setFixedWidth(90)
+        self.btn_serial_open.clicked.connect(self._toggle_serial)
+        serial_row.addWidget(self.btn_serial_open)
+        self.serial_status_lbl = QLabel("未打开")
+        self.serial_status_lbl.setStyleSheet("color:#909090;")
+        serial_row.addWidget(self.serial_status_lbl)
+        serial_row.addStretch()
+        self.serial_row_w = QWidget()
+        self.serial_row_w.setLayout(serial_row)
+        cfg_layout.addWidget(self.serial_row_w, 2, 2)
+        self.tcp_row_w.setVisible(False)
+        self._refresh_serial_ports()
+
         btn_row = QHBoxLayout()
         self.start_btn = QPushButton("开始升级")
-        self.start_btn.clicked.connect(self._start)
+        self.start_btn.clicked.connect(self._on_start_btn)
         btn_row.addWidget(self.start_btn)
-        btn_close = QPushButton("关闭")
-        btn_close.clicked.connect(self.close)
-        btn_row.addWidget(btn_close)
         btn_row.addStretch()
-        cfg_layout.addLayout(btn_row, 2, 0, 1, 3)
+        cfg_layout.addLayout(btn_row, 3, 0, 1, 3)
 
         self.progress = QProgressBar()
         self.progress.setRange(0, 100)
@@ -676,9 +902,9 @@ class UpgradeDialog(QDialog):
                 background-color: #1976D2;
             }
         """)
-        cfg_layout.addWidget(self.progress, 3, 0, 1, 2)
+        cfg_layout.addWidget(self.progress, 4, 0, 1, 2)
         self.status_lbl = QLabel("就绪")
-        cfg_layout.addWidget(self.status_lbl, 3, 2)
+        cfg_layout.addWidget(self.status_lbl, 4, 2)
 
         root.addWidget(cfg)
 
@@ -700,6 +926,20 @@ class UpgradeDialog(QDialog):
     def isUpgrading(self):
         return self.running
 
+    def _release_session(self):
+        if self.tcp_thread:
+            self.tcp_thread.release_session()
+
+    def _cancel_upgrade(self):
+        """升级中取消: 停止收发并释放会话锁定。"""
+        self.running = False
+        self._timer.stop()
+        self._log("升级已取消", "err")
+        self.status_lbl.setText("已取消")
+        self._release_session()
+        self.start_btn.setText("开始升级")
+        self.start_btn.setEnabled(True)
+
     def _reset_ui(self):
         """重置弹窗 UI 到初始状态，避免关闭后重新打开时界面卡住。"""
         self.running = False
@@ -709,10 +949,134 @@ class UpgradeDialog(QDialog):
         self._fw_data = b""
         self._mac = None
         self._pkg_num = 0
+        self._window_start = 0
+        self._retry_cnt = 0
+        self._resume_base = 0
         self.start_btn.setEnabled(True)
+        self._release_session()
+        self.start_btn.setText("开始升级")
         self.progress.setValue(0)
         self.status_lbl.setText("就绪")
 
+    def _on_channel_changed(self, idx):
+        self.channel = 'serial' if idx == 0 else 'tcp'
+        tcp_on = (self.channel == 'tcp')
+        self.tcp_row_w.setVisible(tcp_on)
+        self.serial_row_w.setVisible(not tcp_on)
+
+    def _refresh_serial_ports(self):
+        try:
+            ports = [pt.device for pt in serial.tools.list_ports.comports()]
+        except Exception:
+            ports = []
+        self.serial_cmb.clear()
+        if ports:
+            self.serial_cmb.addItems(ports)
+        else:
+            self.serial_cmb.addItem("无可用串口")
+
+    def _toggle_serial(self):
+        try:
+            if self.ser and self.ser.is_open:
+                if self._serial_rx:
+                    self._serial_rx.stop()
+                    self._serial_rx = None
+                self.ser.close()
+                self.ser = None
+                self.btn_serial_open.setText("打开串口")
+                self.serial_status_lbl.setText("未打开")
+                self.serial_status_lbl.setStyleSheet("color:#909090;")
+                return
+            port = self.serial_cmb.currentText()
+            if not port or port == "无可用串口":
+                QMessageBox.warning(self, "提示", "未扫描到串口, 请重新打开升级页面")
+                return
+            self.ser = serial.Serial(port, int(self.baud_cmb.currentText()), timeout=0.02)
+            self._serial_rx = SerialThread(self.ser)
+            self._serial_rx.data_received_raw.connect(self.feed_data)
+            self._serial_rx.start()
+            self.btn_serial_open.setText("关闭串口")
+            self.serial_status_lbl.setText("已打开")
+            self.serial_status_lbl.setStyleSheet("color:#2E7D32;")
+        except Exception as e:
+            self._log(f"串口操作异常: {e}", "err")
+            QMessageBox.warning(self, "提示", f"串口操作异常: {e}")
+            try:
+                if self.ser and self.ser.is_open:
+                    self.ser.close()
+            except Exception:
+                pass
+            self.ser = None
+            self.btn_serial_open.setText("打开串口")
+            self.serial_status_lbl.setText("未打开")
+
+    def _toggle_tcp_listen(self):
+        if self.tcp_thread and self.tcp_thread.isRunning():
+            self.tcp_thread.stop()
+            self.tcp_thread = None
+            self.btn_tcp_listen.setText("开始监听")
+            return
+        try:
+            port = int(self.tcp_port_edit.text().strip())
+            assert 1 <= port <= 65535
+        except Exception:
+            QMessageBox.warning(self, "提示", "TCP端口无效")
+            return
+        self.tcp_thread = TcpServerThread(port)
+        self.tcp_thread.client_connected.connect(self._on_tcp_client)
+        self.tcp_thread.client_disconnected.connect(self._on_tcp_disconnect)
+        self.tcp_thread.session_resumed.connect(self._on_session_resumed)
+        self.tcp_thread.ip_list_changed.connect(self._on_ip_list)
+        self.tcp_thread.data_received_raw.connect(self.feed_data)
+        self.tcp_thread.listen_error.connect(self._on_tcp_error)
+        self.tcp_thread.start()
+        self.btn_tcp_listen.setText("停止监听")
+
+    def _on_ip_list(self, ips):
+        self.ip_cmb.clear()
+        if ips:
+            self.ip_cmb.addItems(ips)
+        else:
+            self.ip_cmb.addItem("无客户端")
+
+    def _on_tcp_client(self, ip):
+        pass
+
+    def _on_session_resumed(self, ip):
+        if self.running and self.channel == 'tcp':
+            self._log(f"握手成功, 升级目标: {ip}", "ok")
+            idx = self.ip_cmb.findText(ip)
+            if idx >= 0:
+                self.ip_cmb.setCurrentIndex(idx)
+
+    def _on_tcp_disconnect(self, ip, was_session):
+        if was_session and self.running and self.channel == 'tcp':
+            self._log(f"升级会话TCP断开(IP={ip}),等待网关模组重连后自动恢复...", "err")
+
+    def _on_tcp_error(self, msg):
+        self._log(f"TCP监听失败: {msg}", "err")
+        if self.tcp_thread:
+            self.tcp_thread.stop()
+            self.tcp_thread = None
+        self.btn_tcp_listen.setText("开始监听")
+
+    def _send(self, frame):
+        """按当前通道发送升级帧(TCP通道按协议约定发ASCII hex文本, 设备端AsciiToHex还原)。"""
+        if self.channel == 'tcp':
+            if not (self.tcp_thread and self.tcp_thread.is_client_connected()):
+                self._log("TCP未连接,发送失败", "err")
+                return False
+            return self.tcp_thread.send_data(frame.hex().upper().encode('ascii'))
+        if not (self.ser and self.ser.is_open):
+            self._log("串口未打开,发送失败", "err")
+            return False
+        try:
+            self.ser.write(frame)
+            return True
+        except Exception:
+            self._log("串口发送失败", "err")
+            return False
+
     def _choose_file(self):
         path, _ = QFileDialog.getOpenFileName(
             self, "选择固件文件", "", "固件文件 (*.bin);;所有文件 (*)"
@@ -732,8 +1096,16 @@ class UpgradeDialog(QDialog):
             if text:
                 self._log(f"[设备] {text}")
 
+    def _on_start_btn(self):
+        """升级中=取消; 空闲=开始升级。"""
+        if self.running:
+            self._cancel_upgrade()
+        else:
+            self._start()
+
     def _start(self):
         if self.running:
+            self._cancel_upgrade()
             return
         path = self.fw_edit.text().strip()
         mac = parse_mac(self.mac_edit.text())
@@ -743,7 +1115,11 @@ class UpgradeDialog(QDialog):
         if mac is None:
             QMessageBox.warning(self, "提示", "设备MAC格式错误，应为 81-00-00-06-00-00")
             return
-        if not self.main.serial_port or not self.main.serial_port.is_open:
+        if self.channel == 'tcp':
+            if not (self.tcp_thread and self.tcp_thread.is_client_connected()):
+                QMessageBox.warning(self, "提示", "TCP未监听或网关未连接, 请先监听并等待网关接入")
+                return
+        elif not self.ser and self.ser.is_open:
             QMessageBox.warning(self, "提示", "请先打开串口")
             return
         try:
@@ -755,28 +1131,39 @@ class UpgradeDialog(QDialog):
         if not fw:
             QMessageBox.warning(self, "提示", "固件文件为空")
             return
+        if len(fw) > 232 * 1024:
+            QMessageBox.warning(self, "提示", f"固件大小{len(fw)}字节超出A区上限(237568字节), 无法升级")
+            return
 
         self._mac = mac
+        if getattr(self, 'tcp_thread', None) is not None:
+            self.tcp_thread.expect_mac = mac
+            self.tcp_thread.release_session()
         self._fw_data = fw
+        self._got_ack = False
+        self._announce_frame = None
         self._pkg_num = (len(fw) + UPG_PACKET_DATA - 1) // UPG_PACKET_DATA
         self._sent.clear()
         self._buf = b""
         self.running = True
-        self.start_btn.setEnabled(False)
+        self.start_btn.setText("取消")
         self.progress.setValue(0)
+        self._window_start = 0
+        self._retry_cnt = 0
+        self._resume_base = 0
         self.status_lbl.setText("等待握手...")
 
         app_crc = zlib.crc32(fw) & 0xFFFFFFFF
         payload = struct.pack('<H', self._pkg_num) + struct.pack('<I', len(fw)) + struct.pack('<I', app_crc)
         frame = build_frame(mac, CMD_ANNOUNCE, payload)
         self._log(f"下发APP信息: 包数={self._pkg_num}, 大小={len(fw)}字节, CRC32=0x{app_crc:08X}")
-        self.main.send_raw(frame)
+        self._announce_frame = frame
+        self._send(frame)
         self._log("等待设备握手后接收数据请求...")
-        self._timer.start(5000)
+        self._timer.start(10000 if self.channel == 'tcp' else 5000)
 
     def feed_data(self, data):
-        if not self.running:
+        # keep parsing after finish: device sends REQ(0) to restart download on CRC fail, gate moved to _handle
-            return
         self._buf += data
         while True:
             frame = self._try_next_frame()
@@ -810,9 +1197,30 @@ class UpgradeDialog(QDialog):
         return None
 
     def _handle(self, cmd, payload):
-        self._timer.start(5000)
+        if not self.running and cmd != CMD_REQ_PKG:
+            return   # finished: only REQ(0) restart passes, other frames dropped
+        if not self.running:
+            return
+        self._timer.start(3000 if self.channel == 'tcp' else 5000)
+        self._retry_cnt = 0
         if cmd == CMD_ACK:
-            self._log("收到从机应答(0x01)", "ok")
+            self._got_ack = True
+            # 兼容旧格式(1字节0x20)与新格式{Status, ResumedIdx}: 0x20=全新, 0x21=断点续传
+            if len(payload) >= 3:
+                status, resumed = struct.unpack('<BH', payload[0:3])
+                if status == 0x21 and resumed > 0:
+                    self._resume_base = resumed
+                    self._log(f"设备断点续传: 已接收 {resumed} 包, 从断点继续", "ok")
+                else:
+                    self._resume_base = 0
+                    self._log("收到从机应答(0x01), 全新升级", "ok")
+                    if self.channel == 'tcp':
+                        self._window_start = 0
+                        self._send_window(0, self._window)
+                        return
+            else:
+                self._resume_base = 0
+                self._log("收到从机应答(0x01)", "ok")
             self.status_lbl.setText("设备就绪")
             return
         if cmd == CMD_REQ_PKG:
@@ -820,24 +1228,44 @@ class UpgradeDialog(QDialog):
                 self._log("从机请求包帧格式错误", "err")
                 return
             idx, total = struct.unpack('<HH', payload[0:4])
+            if idx == 0 and not self.running:
+                # device CRC failed, full re-download: reset progress and resend from pkt 0
+                self.running = True
+                self._sent.clear()
+                self.progress.setValue(0)
+                self.start_btn.setEnabled(False)
+                self._log("设备CRC校验失败, 已重置进度重新下载", "warn")
             if idx >= self._pkg_num:
                 self._log(f"从机请求包序号越界({idx})，视为完成", "ok")
                 self._finish()
                 return
-            start = idx * UPG_PACKET_DATA
+            batch = self._window if self.channel == 'tcp' else 1
-            data = self._fw_data[start:start + UPG_PACKET_DATA]
+            self._window_start = idx
-            p = struct.pack('<HHB', idx, self._pkg_num, len(data)) + data
+            self._send_window(idx, batch)
-            frame = build_frame(self._mac, CMD_SEND_PKG, p)
-            self.main.send_raw(frame)
-            self._sent.add(idx)
-            pct = len(self._sent) * 100.0 / self._pkg_num
-            self.progress.setValue(int(pct))
-            self.status_lbl.setText(f"{len(self._sent)}/{self._pkg_num} 包")
-            if len(self._sent) >= self._pkg_num:
-                self._finish()
             return
         self._log(f"收到其他帧 Cmd={cmd:#04x}", "err")
 
+    def _send_window(self, start, batch):
+        """从start包起连发batch包(TCP窗口流控; 串口停等batch=1)。"""
+        for k in range(batch):
+            idx = start + k
+            if idx >= self._pkg_num:
+                break
+            s = idx * UPG_PACKET_DATA
+            data = self._fw_data[s:s + UPG_PACKET_DATA]
+            p = struct.pack('<HHB', idx, self._pkg_num, len(data)) + data
+            if not self._send(build_frame(self._mac, CMD_SEND_PKG, p)):
+                self._log("发送失败, 通道异常", "err")
+                return
+            self._sent.add(idx)
+            if k < batch - 1:
+                time.sleep(0.005)   # Cat1模组URC输出限流: 防LIPURC截断丢包
+        done = max(self._sent) + 1
+        self.progress.setValue(min(int(done * 100.0 / self._pkg_num), 100))
+        self.status_lbl.setText(f"{done}/{self._pkg_num} 包")
+        if len(self._sent) >= self._pkg_num:
+            self._finish()
+
     def _finish(self):
         self.running = False
         self._timer.stop()
@@ -849,20 +1277,43 @@ class UpgradeDialog(QDialog):
         else:
             self._log(f"升级未完成，已发送 {len(self._sent)}/{self._pkg_num} 包", "err")
 
+        self._release_session()
+        self.start_btn.setText("开始升级")
     def _on_timeout(self):
         if not self.running:
             return
+        if self.channel == 'tcp' and not self._got_ack and self._retry_cnt < 5:
+            # 握手阶段(未收到ACK): 重发0x81升级请求而非数据批次
+            self._retry_cnt += 1
+            self._log(f"握手超时, 重发升级请求({self._retry_cnt}/5)", "err")
+            self._timer.start(10000)
+            self._send(self._announce_frame)
+            return
+        if self.channel == 'tcp' and self._retry_cnt < 5:
+            # Cat1链路抖动: 重发当前批次(设备按期望包号丢弃重复包)
+            self._retry_cnt += 1
+            self._log(f"超时, 从第{self._window_start}包起重发批次({self._retry_cnt}/5)", "err")
+            self._timer.start(3000)
+            self._send_window(self._window_start, self._window)
+            return
         self.running = False
         self._timer.stop()
         self.start_btn.setEnabled(True)
-        self._log("升级超时(5秒无响应)", "err")
+        self._log("升级超时(无响应)", "err")
         self.status_lbl.setText("超时")
 
+        self._release_session()
+        self.start_btn.setText("开始升级")
     def closeEvent(self, event):
+        if self.running:
+            self._cancel_upgrade()
+        else:
+            self._release_session()
+        if self.ser and self.ser.is_open:
+            self._toggle_serial()
         self._reset_ui()
         event.accept()
 
-
 class DeviceDialog(QDialog):
     """设备管理对话框：通过 culs 查询已注册通讯单元，cudel 删除设备。"""