1. 查询当前AT指令是否正在处理中
while(get_at_cmd_in_progress() == false);
2. 信号量发送函数
(void)osMessageQueuePut(app_incoming_queue, (void*)&APP_MAIN_QUEUE_TEMP, 0, osNoWait);
3. 信号量接收函数
if(osMessageQueueGet(app_incoming_queue, (void*)&temp, NULL, osWaitForever) == osOK)