Check the status of television in LM3!

[Erwin van der Zwart]

Hi Phongvucba.

Here is a script example for controlling Chromecast:

Code:

-- ****** Control Chromecast with 1 byte object version 1.0 created by Erwin van der Zwart ******* --
-- **************************************** SET PARAMETERS *************************************** --

-- Chromecast IP address
ip_chromecast = '192.168.10.23'

-- Additional info from browser about
-- http://192.168.10.23:8008/ssdp/device-desc.xml
-- http://192.168.10.23:8008/setup/scan_results
-- http://192.168.10.23:8008/setup/eureka_info?options=detail
-- http://192.168.10.23:8008/setup/supported_timezones
-- http://geeknizer.com/how-chromecast-works-chromecast-protocol-explained/

value = event.getvalue()

require 'socket.http'

function control_chromecast(uri, request)
 local request_body = request
 local response_body = { }
 local res, code, response_headers = socket.http.request
 {
   url = "http://" .. ip_chromecast .. ":8008/" .. uri;
   method = "POST";
   headers =
   {
     ["Content-Type"] = "application/x-www-form-urlencoded";
     ["Content-Length"] = #request_body;
   };
   source = ltn12.source.string(request_body);
   sink = ltn12.sink.table(response_body);
 }
 return res, code, response_headers
end

-- Action on value 1
if value == 1 then
    -- Start Youtube video
    res, code, response_headers = control_chromecast('apps/YouTube', [[v=_iuBO1lkch8]])
end

-- Action on value 2
if value == 2 then
    -- Stop Youtube video
    res, code, response_headers = control_chromecast('apps/YouTube', [[DELETE]])
end

-- Action on value 3
if value == 3 then
    -- Start Chromecast Homescreen
    res, code, response_headers = control_chromecast('apps/ChromeCast', [[]])
end

-- Log results
resulthandling = false

if resulthandling == true then
 -- Handler for results
 log("Status:", res and "OK" or "FAILED")
 log("HTTP code:", code)
 log("Response headers:")
 if type(response_headers) == "table" then
   for k, v in pairs(response_headers) do
     log(k, ":", v)
   end
 else
   -- Would be nil, if there is an error
   log("Not a table:", type(response_headers))
 end
 log("Response body:")
 if type(response_body) == "table" then
   log(table.concat(response_body))
 else
 end
end

BR,
Erwin