framework-arduinoteensy-cxx20/libraries/IRremote/ir_Whynter.cpp

#include "IRremote.h"
#include "IRremoteInt.h"

//==============================================================================
//               W   W  H   H  Y   Y N   N TTTTT EEEEE  RRRRR
//               W   W  H   H   Y Y  NN  N   T   E      R   R
//               W W W  HHHHH    Y   N N N   T   EEE    RRRR
//               W W W  H   H    Y   N  NN   T   E      R  R
//                WWW   H   H    Y   N   N   T   EEEEE  R   R
//==============================================================================

#define WHYNTER_BITS          32
#define WHYNTER_HDR_MARK    2850
#define WHYNTER_HDR_SPACE   2850
#define WHYNTER_BIT_MARK     750
#define WHYNTER_ONE_MARK     750
#define WHYNTER_ONE_SPACE   2150
#define WHYNTER_ZERO_MARK    750
#define WHYNTER_ZERO_SPACE   750

//+=============================================================================
#if SEND_WHYNTER
void  IRsend::sendWhynter (unsigned long data,  int nbits)
{
	// Set IR carrier frequency
	enableIROut(38);

	// Start
	mark(WHYNTER_ZERO_MARK);
	space(WHYNTER_ZERO_SPACE);

	// Header
	mark(WHYNTER_HDR_MARK);
	space(WHYNTER_HDR_SPACE);

	// Data
	for (unsigned long  mask = 1UL << (nbits - 1);  mask;  mask >>= 1) {
		if (data & mask) {
			mark(WHYNTER_ONE_MARK);
			space(WHYNTER_ONE_SPACE);
		} else {
			mark(WHYNTER_ZERO_MARK);
			space(WHYNTER_ZERO_SPACE);
		}
	}

	// Footer
	mark(WHYNTER_ZERO_MARK);
	space(WHYNTER_ZERO_SPACE);  // Always end with the LED off
}
#endif

//+=============================================================================
#if DECODE_WHYNTER
bool  IRrecv::decodeWhynter (decode_results *results)
{
	long  data   = 0;
	int   offset = 1;  // skip initial space

	// Check we have the right amount of data
	if (irparams.rawlen < (2 * WHYNTER_BITS) + 6)  return false ;

	// Sequence begins with a bit mark and a zero space
	if (!MATCH_MARK (results->rawbuf[offset++], WHYNTER_BIT_MARK  ))  return false ;
	if (!MATCH_SPACE(results->rawbuf[offset++], WHYNTER_ZERO_SPACE))  return false ;

	// header mark and space
	if (!MATCH_MARK (results->rawbuf[offset++], WHYNTER_HDR_MARK ))  return false ;
	if (!MATCH_SPACE(results->rawbuf[offset++], WHYNTER_HDR_SPACE))  return false ;

	// data bits
	for (int i = 0;  i < WHYNTER_BITS;  i++) {
		if (!MATCH_MARK(results->rawbuf[offset++], WHYNTER_BIT_MARK))  return false ;

		if      (MATCH_SPACE(results->rawbuf[offset], WHYNTER_ONE_SPACE ))  data = (data << 1) | 1 ;
		else if (MATCH_SPACE(results->rawbuf[offset], WHYNTER_ZERO_SPACE))  data = (data << 1) | 0 ;
		else                                                                return false ;
		offset++;
	}

	// trailing mark
	if (!MATCH_MARK(results->rawbuf[offset], WHYNTER_BIT_MARK))  return false ;

	// Success
	results->bits = WHYNTER_BITS;
	results->value = data;
	results->decode_type = WHYNTER;
	return true;
}
#endif