ds18b20-web.lua 1.1 KB

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  1. t = require('ds18b20')
  2. port = 80
  3. pin = 3 -- gpio0 = 3, gpio2 = 4
  4. gconn = {} -- global variable for connection
  5. function readout(temp)
  6. local resp = "HTTP/1.1 200 OK\nContent-Type: text/html\nRefresh: 5\n\n" ..
  7. "<!DOCTYPE HTML>" ..
  8. "<html><body>" ..
  9. "<b>ESP8266</b></br>"
  10. for addr, temp in pairs(temp) do
  11. -- resp = resp .. string.format("Sensor %s: %s &#8451</br>", addr, temp)
  12. resp = resp .. string.format("Sensor %s: %s &#8451</br>", encoder.toHex(addr), temp) -- readable address with base64 encoding is preferred when encoder module is available
  13. end
  14. resp = resp ..
  15. "Node ChipID: " .. node.chipid() .. "<br>" ..
  16. "Node MAC: " .. wifi.sta.getmac() .. "<br>" ..
  17. "Node Heap: " .. node.heap() .. "<br>" ..
  18. "Timer Ticks: " .. tmr.now() .. "<br>" ..
  19. "</html></body>"
  20. gconn:send(resp)
  21. gconn:on("sent",function(conn) conn:close() end)
  22. end
  23. srv=net.createServer(net.TCP)
  24. srv:listen(port,
  25. function(conn)
  26. gconn = conn
  27. -- t:readTemp(readout) -- default pin value is 3
  28. t:readTemp(readout, pin)
  29. end
  30. )