扩大 at_cmd 栈大小，修复at_cmd指令无法执行问题。此处是合并代码时 误改回sdk版本造成的。

diff --git a/code/sdk/application/brandy/brandy_standard/thread_init.c b/code/sdk/application/brandy/brandy_standard/thread_init.c
index ba63579..9d89db8 100755 (executable)
--- a/code/sdk/application/brandy/brandy_standard/thread_init.c
+++ b/code/sdk/application/brandy/brandy_standard/thread_init.c
@@ -135,7 +135,7 @@ app_task_definition_t g_app_tasks[] = {
     { { "bt_sdk", 0, NULL, 0, NULL, BTH_SDK_STACK_SIZE, TASK_PRIORITY_SDK, 0, 0 },
       (osThreadFunc_t)bt_acore_task_main, NULL, NULL, USE_DTCM_MEM },
 #ifdef SUPPORT_AT_CMD
-    { { "at_cmd", 0, NULL, 0, NULL, 0xC00, TASK_PRIORITY_APP, 0, 0 },
+    { { "at_cmd", 0, NULL, 0, NULL, 0x1C00, TASK_PRIORITY_APP, 0, 0 },
       (osThreadFunc_t)at_cmd_task_process_handler, NULL,
       (CreateQueueFunction_t)at_cmd_task_queue_init, USE_EXTEND_MEM },
 #endif