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32 lines
1.9 KiB
32 lines
1.9 KiB
5 years ago
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/* IRLibHardware.cpp
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* Part of IRLib Library for Arduino receiving, decoding, and sending
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* infrared signals. See COPYRIGHT.txt and LICENSE.txt for more information.
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*
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* We need a way for the sending object to communicate with the receiving object.
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* Sending an IR signal can disable further receiving because the timer needed for the 50us
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* interrupts is used to modulate the frequency of the PWM output signal. We need a flag
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* for the send object to inform you receive object that this occurred.
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*
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* Some applications do sending only and would only require you to include IRLibSendBase.h
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* while others only do receiving/decoding and would include IRLibRecvBase.h but not
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* IRLibSendBase.h. The only include file that is used by both sending and receiving is
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* the IRLibHardware.h which was formerly called IRLibTimer.h. Therefore we put the flag
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* in this newly created IRLibHardware.cpp module. That way a send only can put the flag
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* here whether or not there is a receiver. Similarly the receiver can check the flag
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* whether or not there is a sender.
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*
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* The below is a global flag IRLib_didIROut that gets set true with every call to enableIROut.
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* Then any call to IRrecv::enableIRIn checks this to see if it needs to restart the ISR.
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* Regardless IRrecv::enableIRIn will always reset it it false for the next time.
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* Note as always if you try to send while in the middle of receiving, the partially received
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* data is lost. If the application wishes to create a system where the sending waits until
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* the receiver is idle, the programmer can implement such a system themselves and deal with
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* the consequences.
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*
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* The bottom line is the application no longer needs to figure out if it needs to
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* call enableIRIn or the "resume" method. There is no more "resume". You always do
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* enableIRIn after every decode and the system handles it.
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*/
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#include "IRLibHardware.h"
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uint8_t IRLib_didIROut=false;
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