[component][net][at_client] 按copilot的review进行优化

Author: Ryan-CW-Code

components/net/at/src/at_client.c

@@ -469,7 +469,7 @@ int at_client_obj_wait_connect(at_client_t client, rt_uint32_t timeout)
         return -RT_ERROR;
     }
 
-    resp = at_create_resp(64, 0, rt_tick_from_millisecond(1000));
+    resp = at_create_resp(64, 0, rt_tick_from_millisecond(300));
     if (resp == RT_NULL)
     {
         LOG_E("no memory for AT client(%s) response object.", client->device->parent.name);
@@ -700,20 +700,21 @@ at_client_t at_client_get(const char *dev_name)
     RT_ASSERT(dev_name);
 
     rt_slist_t *node;
-    at_client_t client = RT_NULL;
+    at_client_t client;
 
     rt_base_t level = rt_hw_interrupt_disable();
     rt_slist_for_each(node, &g_at_client_list)
     {
         client = rt_slist_entry(node, struct at_client, list);
         if (rt_strcmp(client->device->parent.name, dev_name) == 0)
         {
-            break;
+            rt_hw_interrupt_enable(level);
+            return client;
         }
     }
     rt_hw_interrupt_enable(level);
 
-    return client;
+    return RT_NULL;
 }
 
 /**
@@ -726,7 +727,10 @@ at_client_t at_client_get_first(void)
     at_client_t client = RT_NULL;
 
     rt_base_t level = rt_hw_interrupt_disable();
-    client          = rt_slist_first_entry(&g_at_client_list, struct at_client, list);
+    if (!rt_slist_isempty(&g_at_client_list))
+    {
+        client = rt_slist_first_entry(&g_at_client_list, struct at_client, list);
+    }
     rt_hw_interrupt_enable(level);
 
     return client;
@@ -956,8 +960,7 @@ static int at_client_para_init(at_client_t client)
                                       (void (*)(void *parameter))client_parser,
                                       client,
                                       1024 + 512,
-                                      9,
-                                      /*  RT_THREAD_PRIORITY_MAX / 3 - 1,*/
+                                      RT_THREAD_PRIORITY_MAX / 3 - 1,
                                       5);
     if (client->parser == RT_NULL)
     {