docs: SUOTA 状态码分层与 0x38000 产品头阻断根因入 DECISIONS

tools/gpio_probe.py

@@ -26,16 +26,20 @@ class Bridge:
         self.next_id = 0
 
     async def open(self):
+        try:
+            self.w.close()
+        except Exception:
+            pass
         self.r, self.w = await asyncio.open_connection(HOST, PORT)
 
-    async def rpc(self, op, timeout=120, **kw):
+    async def rpc(self, op, wait=120, **kw):
         self.next_id += 1
         rid = self.next_id
         self.w.write(json.dumps({"id": rid, "op": op, **kw}).encode() + b"\n")
         await self.w.drain()
         events = []
         while True:
-            line = await asyncio.wait_for(self.r.readline(), timeout)
+            line = await asyncio.wait_for(self.r.readline(), wait)
             if not line:
                 raise ConnectionError("bridge EOF")
             msg = json.loads(line)
@@ -46,8 +50,13 @@ class Bridge:
 
     async def connect_until_awake(self, tries=12):
         for i in range(tries):
-            resp, _ = await self.rpc("connect", 150, address=DEVICE,
-                                     timeout=30, subscribe=False)
+            try:
+                resp, _ = await self.rpc("connect", 150, address=DEVICE,
+                                         timeout=30, subscribe=False)
+            except (ConnectionError, asyncio.TimeoutError):
+                print("  连接通道中断，重开 TCP...")
+                await self.open()
+                continue
             if resp.get("ok"):
                 print(f"连接成功（第 {i + 1} 次）")
                 return True