Can the AC IR decode and send functionalities be separately enabled/disabled?

[Blend3rman]

I would like to use only the IR sending part of the library with full protocol support.

From my reading of the IRremoteESP8266.h file, there seem to be a few flags to enable/disable based on use case:

1. _IR_ENABLE_DEFAULT_ - Enable/disable the full ac decode and send functionality
2. DECODE_{PROTOCOL} - Enable/disable the particular ac protocol decode (through IR_ENABLE_DEFAULT)
3. SEND_{PROTOCOL} - Same as above but for sending
4. DECODE_AC - An internal flag set when any of the AC decode protocols are enabled

Is it already possible to enable every AC protocol's send functionality alone? If not, what would be the most straightforward way to add such a functionality?

[crankyoldgit]

Is it already possible to enable every AC protocol's send functionality alone? If not, what would be the most straightforward way to add such a functionality?

If you don't use the "receiving" functionality (i.e. No #include <IRrecv.h>) , it shouldn't be included in your code. So, technically you don't need to disable it. If you do invoke/use it, then it will include the whole lot as per _IR_ENABLE_DEFAULT_ etc.

Ditto for "receiving only". If you only want to decode, and don't use the sendBlah()/send() etc routines, it won't include any of that sending code in your program.

Similarly, if you stick to using protocol specific send routines e.g. sendNEC(), sendKelvinator(), etc. It will only include the minimum code you need/use. Even if you have all the protocols enabled.
However, if you use the IRsend::send() routine(s) or IRac, then it will pretty much include every IR protocol the library knows about.

Soooo ... That means you don't really need to add the functionality you're thinking of as the compiler/linker already does that for you.

To put it another way:

• #define DECODE_{PROTOCOL} false is needed to make capture/receiving code smaller, as the main decode() routine will try every decode enabled protocol. Hence, to limit "every", you need to disable protocols if you want this to be smaller/faster etc.
• #define SEND_{PROTOCOL} false is ONLY needed if you want to make the code smaller AND you're using the generic routines/interfaces. e.g. IRsend::send() and the IRac class.
• Otherwise the compiler/linker will do the right thing for you and only include the code & protocols that you need need. If you a really tight on bytes, disabling all the things you don't need can save a handful of extra bytes, but I don't think that's your problem here.

[Blend3rman]

Got it, thanks for the answer!