[nodemcu lua] nodemcu ping ip地址

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[nodemcu lua] nodemcu ping ip地址

1. ip = "992.166.10.10"
   
2. function ping_resp(b, ip, sq, tm)
   
3.     print(string.format("%d bytes from %s, icmp_seq=%d time=%dms", b, ip, sq, tm))
   
4.   if b == 0 then
   
5.     print("i am not here")
   
6.   end
   
7.   if b ~= 0 then
   
8.     print("i am here")
   
9.   end
   
10. end
    
11. net.ping(ip, 1, ping_resp)
    
12. tmr.create():alarm(1000, tmr.ALARM_SINGLE, function() net.ping(ip, 1, ping_resp) end)
    

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可以用作检测ip地址能否ping通然后作出反应.