收到广播命令时重新初始化定时器，can总线添加发送时长超时判断

source/main/main.c

@@ -58,8 +58,6 @@ int main()
   connect(protu2,protu_recv_signal,0,cmd,cmd_recv_slot);
   connect(cmd,cmd_reply_signal,0,protu2,protu_send_call);
   
-  timer_def *timer=dev_get("timer");
-  timer->init(timer);
 //  rt_thread_mdelay(5000);
 //  timer->write(timer,0);
   while(1)