Controlling Linn Sneaky from HC2

[tnesheim 8]

Hi

I have a Linn Sneaky network player that is controllable via a TCP/IP point-2-point protocol. I want to make a virtual device to control basic functions like volume from my HC2 

 

One "volume command" is: Action Ds/Volume 1 VolumeInc, but I cannot figure how to get it sent to the network player using either the string method og LUA. The correct thing is as I understand to send the command in "plain text" to my network player.

 

Can someone please point me to a thread where I can reuse the method or please tell me how to proceed? (Last time I programmed was 20 years ago, but if I get an example or something similar it´s a good start).

 

 

Control protocol:          

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Commanc examples:   

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[tnesheim 8]

Ok, one step further. I can control my network player by opening a telnet session on my computer and send the commands from the text prompt. So what I really want is to send plain text to the IP-adress of my network player(which is listening) through TCP/IP. I have tried several methods found at this forum but with no luck:

 

Method 1:

tcpSocket = Net.FTcpSocket("192.168.1.163", 23) 

bytes, errorCode = tcpSocket:write("Action Ds/Volume 1 VolumeDec") 

fibaro:debug(errorCode) 

if errorCode == 0 

  then 

  fibaro:debug("Done")

else 

  fibaro:debug("Error") 

end

 

Method 2:

local bytes, errorCode = socket:write("Action Ds/Volume 1 VolumeInc", "192.168.1.163", 80);

--check for error     

if errorCode == 0 then

  fibaro:debug("ok");

  -- Process bytes response...

else

  fibaro:debug("error");

end

 

Since my programming skills for now is initial I´m not able to reveal whats wrong with the code.  So, please advice.

[petergebruers 1,268]

I can tell one thing: method 1 only works in a Virtual Device, not in a Scene. So you make a new VD, add a button and copy/paste method 1 in a button. Hope this gets you started...

[tnesheim 8]

Hi

Thanks for your reply. I´ve only been using Virtual Devices and the "method 1" does not alter the volume setting. However if I open a Telnet shell the same command do. 

[petergebruers 1,268]

OK, that's good to know. I'm sorry, I don't have such a device, or a device that communicates like that. Here's two idea's that I have. First, what happens if you repeat the line with "tcpSocket:write", so as to send the command twice? Second I saw that the documentation lists the commands in capitals. But I suppose you have thought of that. Hmm. When you copy/paste the string from you HC2 into telnet that's OK?

[petergebruers 1,268]

Maybe the command needs a terminator, like CR/LF? The doc doesn't say so, but... Could you maybe try

this:

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[tnesheim 8]

Hi

I tried the telnet method once mote, and yes, I had to sent the command twice the first time in every new session. Your code with the CR/LR did the job, so my player is now responding! Thank you very much!

[petergebruers 1,268]

You're welcome! BTW CR/LF can be added to the string in lua as "\r\n" - but I wanted to separate the ending from the command string, so I used char(). In hindsight, I could have written that as "Action Ds/Volume 1 VolumeDec".."\r\n". Or "Action Ds/Volume 1 VolumeDec\r\n". I hope you can now get the other commands to work!

[tnesheim 8]

Hi again!

The method above makes me able to send commands to my Linn media player, however playing around with this, the interface stops working after a while. I see in the documentation that my mediaplayer accepts 4  "raw socket sessions" , addtional above are ignored. I sucpect that this might be the case. 

 

I guess that I have to terminate the session/socket(?) for every command string I send to avoid build-up of sessions? Which command should I use for doing so? Please advise.