ir_Sony.cpp

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#include "IRremote.h"
 
//==============================================================================
//                           SSSS   OOO   N   N  Y   Y
//                          S      O   O  NN  N   Y Y
//                           SSS   O   O  N N N    Y
//                              S  O   O  N  NN    Y
//                          SSSS    OOO   N   N    Y
//==============================================================================
 
#define SONY_BITS                   12
#define SONY_HDR_MARK             2400
#define SONY_HDR_SPACE             600
#define SONY_ONE_MARK             1200
#define SONY_ZERO_MARK             600
#define SONY_RPT_LENGTH          45000
#define SONY_DOUBLE_SPACE_USECS    500  // usually see 713 - not using ticks as get number wrap around
 
//+=============================================================================
#if SEND_SONY
void IRsend::sendSony(unsigned long data, int nbits) {
    // Set IR carrier frequency
    enableIROut(40);
 
    // Header
    mark(SONY_HDR_MARK);
    space(SONY_HDR_SPACE);
 
    // Data
    for (unsigned long mask = 1UL << (nbits - 1); mask; mask >>= 1) {
        if (data & mask) {
            mark(SONY_ONE_MARK);
            space(SONY_HDR_SPACE);
        } else {
            mark(SONY_ZERO_MARK);
            space(SONY_HDR_SPACE);
        }
    }
 
    // We will have ended with LED off
}
#endif
 
//+=============================================================================
#if DECODE_SONY
bool IRrecv::decodeSony(decode_results *results) {
    long data = 0;
    unsigned int offset = 0;  // Dont skip first space, check its size
 
    if (irparams.rawlen < (2 * SONY_BITS) + 2) {
        return false;
    }
 
    // Some Sony's deliver repeats fast after first
    // unfortunately can't spot difference from of repeat from two fast clicks
    if (results->rawbuf[offset] * USECPERTICK < SONY_DOUBLE_SPACE_USECS) {
        // Serial.print("IR Gap found: ");
        results->bits = 0;
        results->value = REPEAT;
 
#  ifdef DECODE_SANYO
        results->decode_type = SANYO;
#  else
        results->decode_type = UNKNOWN;
#  endif
 
        return true;
    }
    offset++;
 
    // Initial mark
    if (!MATCH_MARK(results->rawbuf[offset], SONY_HDR_MARK)) {
        return false;
    }
    offset++;
 
    while (offset + 1 < irparams.rawlen) {
        if (!MATCH_SPACE(results->rawbuf[offset], SONY_HDR_SPACE)) {
            break;
        }
        offset++;
 
        if (MATCH_MARK(results->rawbuf[offset], SONY_ONE_MARK)) {
            data = (data << 1) | 1;
        } else if (MATCH_MARK(results->rawbuf[offset], SONY_ZERO_MARK)) {
            data = (data << 1) | 0;
        } else {
            return false;
        }
        offset++;
    }
 
    // Success
    results->bits = (offset - 1) / 2;
    if (results->bits < 12) {
        results->bits = 0;
        return false;
    }
    results->value = data;
    results->decode_type = SONY;
    return true;
}
#endif