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Copy pathir_NEC.cpp
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118 lines (102 loc) · 3.51 KB
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#include "IRremote.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_HEADER_MARK 9000
#define NEC_HEADER_SPACE 4500
#define NEC_BIT_MARK 560
#define NEC_ONE_SPACE 1690
#define NEC_ZERO_SPACE 560
#define NEC_REPEAT_SPACE 2250
//+=============================================================================
#if SEND_NEC
/*
* Repeat commands should be sent in a 110 ms raster.
* https://www.sbprojects.net/knowledge/ir/nec.php
*/
void IRsend::sendNEC(unsigned long data, int nbits, bool repeat) {
// Set IR carrier frequency
enableIROut(38);
// Header
mark(NEC_HEADER_MARK);
if (data == REPEAT || repeat) {
// repeat "space and data"
space(NEC_REPEAT_SPACE);
} else {
space(NEC_HEADER_SPACE);
// Data
sendPulseDistanceData(data, nbits, NEC_BIT_MARK, NEC_ONE_SPACE, NEC_ZERO_SPACE);
// 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_HEADER_MARK)) {
return false;
}
offset++;
// Check for repeat
if ((irparams.rawlen == 4) && MATCH_SPACE(results->rawbuf[offset], NEC_REPEAT_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_HEADER_SPACE)) {
return false;
}
offset++;
data = decodePulseDistanceData(results, NEC_BITS, offset, NEC_BIT_MARK, NEC_ONE_SPACE, NEC_ZERO_SPACE);
// // 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++;
//
// 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