Add SmartWares protocol

[Cilyan]

Added protocol for SmartWares "learning" plugs. These are plugs, seemingly mostly available in Europe. The plugs can be associated/disassociated from the remote. They can associate several remotes.

The code is 64 pulses long, which are combined 2-by-2 (like the other protocols) to make a 32 bits word. It is decomposed into a remote ID, a flag to activate one plug or all associated plugs, a flag for ON/OFF and 4 bits to code the plug index, accommodating up to 16 plugs.

More information: https://github.com/sui77/rc-switch/issues/360

• 0 is 275µs high, 240µs low, simplified {1, 1} Te.
• 1 is 275µs high, 1330µs low, simplified {1, 5} Te.
• Needs a sync bit of 275µs high and 2550µs low, simplified {1, 10} Te.
• Requires at least 10000µs low between repeats, simplified 37 Te.
• Requires a 65th pulse for validation (So KeeLoq workaround is important).

[1technophile]

Thanks for the PR, As soon as @akemper confirms it is working for him, I will integrate the PR.

[atika]

Would it be possible to give a usage example? I just bought a couple of them to integrate into my project who use RCSwitch. I tried to receive the signal to control them without success.

[Cilyan]

The reception doesn't work properly. The detection algorithm in RCSwitch to guess the protocol is too simple and there are now too many protocols to sort out. To analyze and detect the code sent by the remote, I used a custom project and a lot of manual work. But I did this only for one plug. For all the others, what I did was just to program a custom code and let the plug learn it, exactly like you would to pair a remote control with the plug. Place the plug in "pairing mode", then send your custom code using the arduino (several times if possible). Each plug is supposed to be able to pair with up to 3 codes, so you should be able to have both your arduino and the original remote control if you need it.

[dnandha]

Hey guys, while going through my past project I found that more than one year ago I implemented the SmartWares protocol for the FA500 and SF500 remotes. For this I had to make quite a few changes to the code. One of them is increasing the RCSWITCH_MAX_CHANGES, others are changing the guard signal and other delays. Also heavily trimmed down the code for debugging purposes. Anyways, if any of you wants to try it it's here: https://github.com/dnandha/rc-switch/tree/smartwares-sf500-fa500

Would be nice to have a general solution for SmartWare devices!