local t = require('ds18b20')
local port = 80
local pin = 3 -- gpio0 = 3, gpio2 = 4
local gconn = {} -- local variable for connection
local function readout(temps)
local resp = "HTTP/1.1 200 OK\nContent-Type: text/html\nRefresh: 5\n\n" ..
"" ..
"" ..
"ESP8266"
for addr, temp in pairs(temps) do
resp = resp .. string.format("Sensor %s: %s ℃",
('%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X '):format(addr:byte(1,8)), temp)
end
resp = resp ..
"Node ChipID: " .. node.chipid() .. "
" ..
"Node MAC: " .. wifi.sta.getmac() .. "
" ..
"Node Heap: " .. node.heap() .. "
" ..
"Timer Ticks: " .. tmr.now() .. "
" ..
""
gconn:send(resp)
gconn:on("sent",function(conn) conn:close() end)
end
do
local srv = net.createServer(net.TCP)
srv:listen(port,
function(conn)
gconn = conn
-- t:read_temp(readout) -- default pin value is 3
t:read_temp(readout, pin)
end)
end