Created
May 25, 2016 18:05
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init.lua for Temperature Sensor using DHT22, DS18B20 and NodeMCU
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| require('ds18b20') | |
| dht=require("dht") | |
| tmr.alarm(1, 5000, 1, function() | |
| status,temp,humi,temp_decimial,humi_decimial = dht.read(2) | |
| if( status == dht.OK ) then | |
| --temperature = temp.."."..(temp_decimial) --/100 | |
| --humidity = humi.."."..(humi_decimial) --/100 | |
| --print("Temperature: "..temperature.." deg C") | |
| --print("Humidity: "..humidity.."%") | |
| print("Temperatura:" ..temp.." C") | |
| print("Umidità: " ..humi.."%") | |
| elseif( status == dht.ERROR_CHECKSUM ) then | |
| print( "DHT Checksum error" ) | |
| temperature=-1 --TEST | |
| elseif( status == dht.ERROR_TIMEOUT ) then | |
| print( "DHT Time out" ) | |
| temperature=-2 --TEST | |
| end | |
| end) | |
| port = 80 | |
| -- ESP-01 GPIO Mapping | |
| gpio0, gpio2 = 3, 4 | |
| ds18b20.setup(gpio2) | |
| srv=net.createServer(net.TCP) | |
| srv:listen(port, | |
| function(conn) | |
| conn:send("HTTP/1.1 200 OK\nContent-Type: text/html\nRefresh: 5\n\n" .. | |
| "<!DOCTYPE HTML>" .. | |
| "<html><body>" .. | |
| "<b>ESP8266</b></br>" .. | |
| "Temperature : " .. temp .. "<br>" .. | |
| "Humidity : " .. humi .. "<br>" .. | |
| "External Temperature : " .. ds18b20.read() .. "<br>" .. | |
| "Node ChipID : " .. node.chipid() .. "<br>" .. | |
| "Node MAC : " .. wifi.sta.getmac() .. "<br>" .. | |
| "Node Heap : " .. node.heap() .. "<br>" .. | |
| "Timer Ticks : " .. tmr.now() .. "<br>" .. | |
| "</html></body>") | |
| conn:on("sent",function(conn) conn:close() end) | |
| end | |
| ) |
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