t = require('ds18b20')
port = 80
pin = 3 -- gpio0 = 3, gpio2 = 4
gconn = {} -- global variable for connection
function readout(temp)
local resp = "HTTP/1.1 200 OK\nContent-Type: text/html\nRefresh: 5\n\n" ..
"<!DOCTYPE HTML>" ..
"<html><body>" ..
"<b>ESP8266</b></br>"
for addr, temp in pairs(temp) do
-- resp = resp .. string.format("Sensor %s: %s ℃</br>", addr, temp)
resp = resp .. string.format("Sensor %s: %s ℃</br>", encoder.toHex(addr), temp) -- readable address with base64 encoding is preferred when encoder module is available
end
resp = resp ..
"Node ChipID: " .. node.chipid() .. "<br>" ..
"Node MAC: " .. wifi.sta.getmac() .. "<br>" ..
"Node Heap: " .. node.heap() .. "<br>" ..
"Timer Ticks: " .. tmr.now() .. "<br>" ..
"</html></body>"
gconn:send(resp)
gconn:on("sent",function(conn) conn:close() end)
end
srv=net.createServer(net.TCP)
srv:listen(port,
function(conn)
gconn = conn
-- t:readTemp(readout) -- default pin value is 3
t:readTemp(readout, pin)
end
)