blob: 723a563aa2c617e39dc5217129a49de734cc42d9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
-- load credentials, 'SSID' and 'PASSWORD' declared and initialize in there
dofile("credentials.lua")
function startup()
if file.open("init.lua") == nil then
print("init.lua deleted or renamed")
else
print("Running")
file.close("init.lua")
-- the actual application is stored in 'application.lua'
dofile("application.lua")
end
end
-- Define WiFi station event callbacks
wifi_connect_event = function(T)
print("Connection to AP("..T.SSID..") established!")
print("Waiting for IP address...")
if disconnect_ct ~= nil then disconnect_ct = nil end
end
wifi_got_ip_event = function(T)
-- Note: Having an IP address does not mean there is internet access!
-- Internet connectivity can be determined with net.dns.resolve().
print("Wifi connection is ready! IP address is: "..T.IP)
print("Startup will resume momentarily, you have 3 seconds to abort.")
print("Waiting...")
tmr.create():alarm(3000, tmr.ALARM_SINGLE, startup)
end
wifi_disconnect_event = function(T)
if T.reason == wifi.eventmon.reason.ASSOC_LEAVE then
--the station has disassociated from a previously connected AP
return
end
-- total_tries: how many times the station will attempt to connect to the AP. Should consider AP reboot duration.
local total_tries = 75
print("\nWiFi connection to AP("..T.SSID..") has failed!")
--There are many possible disconnect reasons, the following iterates through
--the list and returns the string corresponding to the disconnect reason.
for key,val in pairs(wifi.eventmon.reason) do
if val == T.reason then
print("Disconnect reason: "..val.."("..key..")")
break
end
end
if disconnect_ct == nil then
disconnect_ct = 1
else
disconnect_ct = disconnect_ct + 1
end
if disconnect_ct < total_tries then
print("Retrying connection...(attempt "..(disconnect_ct+1).." of "..total_tries..")")
else
wifi.sta.disconnect()
print("Aborting connection to AP!")
disconnect_ct = nil
end
end
-- Register WiFi Station event callbacks
wifi.eventmon.register(wifi.eventmon.STA_CONNECTED, wifi_connect_event)
wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, wifi_got_ip_event)
wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, wifi_disconnect_event)
print("Connecting to WiFi access point...")
wifi.setmode(wifi.STATION)
wifi.sta.config({ssid=SSID, pwd=PASSWORD, save=true})
-- wifi.sta.connect() not necessary because config() uses auto-connect=true by default
|
