fixed the exception of close socket and added dhcp and dns demo

2022-01-06 20:37:34 +08:00
parent a0337a42e3
commit acd53026b0
11 changed files with 185 additions and 81 deletions
@@ -601,8 +601,14 @@ tcpip_callbackmsg_trycallback_fromisr(struct tcpip_callback_msg *msg)
 void
 tcpip_init(tcpip_init_done_fn initfunc, void *arg)
 {
+  static int tcpip_flag = 0;
  lwip_init();

+  if(tcpip_flag)
+    return;
+
+  tcpip_flag = 1;
+
  tcpip_init_done = initfunc;
  tcpip_init_done_arg = arg;
  if (sys_mbox_new(&tcpip_mbox, TCPIP_MBOX_SIZE) != ERR_OK) {