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Copy pathir_NEC.cpp
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98 lines (84 loc) · 2.76 KB
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#include "IRremote.h"
#include "IRremoteInt.h"
//==============================================================================
// N N EEEEE CCCC
// NN N E C
// N N N EEE C
// N NN E C
// N N EEEEE CCCC
//==============================================================================
#define NEC_BITS 32
#define NEC_HDR_MARK 9000
#define NEC_HDR_SPACE 4500
#define NEC_BIT_MARK 560
#define NEC_ONE_SPACE 1690
#define NEC_ZERO_SPACE 560
#define NEC_RPT_SPACE 2250
//+=============================================================================
#if SEND_NEC
void IRsend::sendNEC (unsigned long data, int nbits)
{
// Set IR carrier frequency
enableIROut(38);
// Header
mark(NEC_HDR_MARK);
space(NEC_HDR_SPACE);
// Data
for (unsigned long mask = 1UL << (nbits - 1); mask; mask >>= 1) {
if (data & mask) {
mark(NEC_BIT_MARK);
space(NEC_ONE_SPACE);
} else {
mark(NEC_BIT_MARK);
space(NEC_ZERO_SPACE);
}
}
// Footer
mark(NEC_BIT_MARK);
space(0); // Always end with the LED off
}
#endif
//+=============================================================================
// NECs have a repeat only 4 items long
//
#if DECODE_NEC
bool IRrecv::decodeNEC (decode_results *results)
{
long data = 0; // We decode in to here; Start with nothing
int offset = 1; // Index in to results; Skip first entry!?
// Check header "mark"
if (!MATCH_MARK(results->rawbuf[offset], NEC_HDR_MARK)) return false ;
offset++;
// Check for repeat
if ( (irparams.rawlen == 4)
&& MATCH_SPACE(results->rawbuf[offset ], NEC_RPT_SPACE)
&& MATCH_MARK (results->rawbuf[offset+1], NEC_BIT_MARK )
) {
results->bits = 0;
results->value = REPEAT;
results->decode_type = NEC;
return true;
}
// Check we have enough data
if (irparams.rawlen < (2 * NEC_BITS) + 4) return false ;
// Check header "space"
if (!MATCH_SPACE(results->rawbuf[offset], NEC_HDR_SPACE)) return false ;
offset++;
// Build the data
for (int i = 0; i < NEC_BITS; i++) {
// Check data "mark"
if (!MATCH_MARK(results->rawbuf[offset], NEC_BIT_MARK)) return false ;
offset++;
// Suppend this bit
if (MATCH_SPACE(results->rawbuf[offset], NEC_ONE_SPACE )) data = (data << 1) | 1 ;
else if (MATCH_SPACE(results->rawbuf[offset], NEC_ZERO_SPACE)) data = (data << 1) | 0 ;
else return false ;
offset++;
}
// Success
results->bits = NEC_BITS;
results->value = data;
results->decode_type = NEC;
return true;
}
#endif