-- Test communication of DHT sensor
-- Tested with Lua NodeMCU 0.9.5 build 20150127 floating point !!!
-- 1. Flash Lua NodeMCU to ESP module.
-- 2. Set in program wots.lua humidity sensor type. This is parameter typeSensor="dht11" or "dht22".
-- 3. Load program init.lua and dht.lua to ESP8266 with LuaLoader
-- 4. HW reset module
-- 5. Run program wots.lua - dofile(wots.lua)
-- 6. techfreak.pl - add server www
sensorType="dht11" -- set sensor type dht11 or dht22
PIN = 4 -- data pin, GPIO0
humi=0
temp=0
--load DHT module for read sensor
function ReadDHT()
dht=require("dht")
dht.read(PIN)
chck=1
h=dht.getHumidity()
t=dht.getTemperature()
if h==nil then h=0 chck=0 end
if sensorType=="dht11"then
humi=h/256
temp=t/256
else
humi=h/10
temp=t/10
end
fare=(temp*9/5+32)
--print("Humidity: "..humi.."%")
--print("Temperature: "..temp.."C")
-- release module
dht=nil
package.loaded["dht"]=nil
end
wifi.setmode(wifi.STATION)
wifi.sta.config("ssid","pass")
ip = wifi.sta.getip()
print(ip)
srv=net.createServer(net.TCP)
srv:listen(80,function(conn)
ReadDHT()
conn:send("nettemp.pl DHT11
Humidity: " .. string.format("%d",humi) .. " %
Temperature: " .. string.format("%d",temp) .. " °C ")
conn:on("sent",function(conn) conn:close() end)
end)