ESP8266 Community Forum

Try this
It works for me between 2 esp-07


-- a udp client asta transmite dar nu receptioneaza
wifi.sleeptype(wifi.MODEM_SLEEP)
wifi.setphymode(wifi.PHYMODE_N)
wifi.setmode(wifi.STATIONAP);
wifi.ap.config({ssid="CLIENT",pwd="xxxxxxxx"});
wifi.ap.setip({ip="172.10.10.1",nm="255.255.255.0",gw="172.10.10.1"});
wifi.sta.config("SERVER","xxxxxxxx");
wifi.sta.setip({ip="10.10.10.2",nm="255.255.255.0", gw="10.10.10.1"});
tmr.alarm(0, 500, 1, function()
if wifi.sta.status() ~= 5 then
print("IP unavaiable, Waiting...");
else
print("ESP8266 mode is: " .. wifi.getmode());
print("The module MAC address is: " .. wifi.ap.getmac());
print("SERVER AP IP is "..wifi.ap.getip());
print("SERVER STA IP is "..wifi.sta.getip());
print("SERVER STA CONNECTED");
tmr.stop(0);
end
end)
tmr.alarm(1, 5000, 1, function() node.restore() end)
function client()
uart.setup( 0,115200, 8, 0, 1, 1 )
srv=net.createServer(net.UDP,0)
srv:on("receive", function(srv, pl) tmr.wdclr() uart.write(0,pl) end)
srv:listen(1000) uart.on("data",0,function(data)srv:send(data)end, 0)

c=net.createConnection(net.UDP)
c:connect(1000,"10.10.10.1")
uart.on("data",0,function(data) c:send(data)end, 0)
end
client()





--udp server asta receptioneaza dar nu transmite
wifi.sleeptype(wifi.MODEM_SLEEP)
wifi.setphymode(wifi.PHYMODE_N)
wifi.setmode(wifi.STATIONAP);
wifi.ap.config({ssid="SERVER",pwd="xxxxxxxx"});
wifi.ap.setip({ip="10.10.10.1",nm="255.255.255.0",gw="10.10.10.1"});
wifi.sta.config("CLIENT","xxxxxxxx");
wifi.sta.setip({ip="172.10.10.2",nm="255.255.255.0", gw="172.10.10.1"});
tmr.alarm(0, 1000, 1, function()
if wifi.sta.status() ~= 5 then
print("IP unavaiable, Waiting...");
else
print("ESP8266 mode is: " .. wifi.getmode());
print("The module MAC address is: " .. wifi.ap.getmac());
print("SERVER AP IP is "..wifi.ap.getip());
print("SERVER STA IP is "..wifi.sta.getip());
print("SERVER STA CONNECTED");
tmr.stop(0);
end
end)
tmr.alarm(1, 5000, 1, function() node.restore() end)
function server()
uart.setup( 0,115200, 8, 0, 1, 1 )
srv=net.createServer(net.UDP,0)
srv:on("receive", function(srv, pl) tmr.wdclr() uart.write(0,pl) end)
srv:listen(1000) uart.on("data",0,function(data)srv:send(data)end, 0)

c=net.createConnection(net.UDP)
c:connect(1000,"172.10.10.1")
uart.on("data",0,function(data) c:send(data)end, 0)
end
server()


The firmware is one custom build nodemcu-dev-29-modules-2015-11-04-13-35-22-float

Sorry
I have 2 ESP12

@ Gabi Mihai - Thanks! I just tried your code and it seems to work fine on Adafruit ESP8266 Huzzah boards.

Data in uart here, out uart there and vice versa.

Can any one help me in this.
How many Modules i can connect with each other in network?