Method decodeNEC

src/ir_NEC.hpp:235–326

* Decodes also Onkyo and Apple */

 * Decodes also Onkyo and Apple
 */
bool IRrecv::decodeNEC() {
    /*
     * First check for right data length
     * Next check start bit
     * Next try the decode
     */
    // Check we have the right amount of data (68). The +4 is for initial gap, start bit mark and space + stop bit mark.
    if (!(decodedIRData.rawlen == ((2 * NEC_BITS) + 4) || (decodedIRData.rawlen == 4))) {
        DEBUG_PRINT(F("NEC: Data length="));
        DEBUG_PRINT(decodedIRData.rawlen);
        DEBUG_PRINTLN(F(" is not 68 or 4"));
        return false;
    }

    // Check header "mark" this must be done for repeat and data
    if (!matchMark(irparams.rawbuf[1], NEC_HEADER_MARK)) {
        return false;
    }

    // Check for repeat - here we have another header space length
    if (decodedIRData.rawlen == 4) {
        if (matchSpace(irparams.rawbuf[2], NEC_REPEAT_HEADER_SPACE)
                && matchMark(irparams.rawbuf[3], NEC_BIT_MARK)) {
            decodedIRData.flags = IRDATA_FLAGS_IS_REPEAT | IRDATA_FLAGS_IS_LSB_FIRST;
            decodedIRData.address = lastDecodedAddress;
            decodedIRData.command = lastDecodedCommand;
            decodedIRData.protocol = lastDecodedProtocol; // Allow recognition of repeats of NEC, APPLE, ONKYO and OPENLASIR and maybe LG
            return true;
        }
        return false;
    }

    // Check command header space
    if (!matchSpace(irparams.rawbuf[2], NEC_HEADER_SPACE)) {
        DEBUG_PRINTLN(F("NEC: Header space length is wrong"));
        return false;
    }

    // Decode as NEC protocol
    decodePulseDistanceWidthData_P(&NECProtocolConstants, NEC_BITS);

    // Success
//    decodedIRData.flags = IRDATA_FLAGS_IS_LSB_FIRST; // Not required, since this is the start value
    LongUnion tValue;
    tValue.ULong = decodedIRData.decodedRawData;
    decodedIRData.command = tValue.UByte.MidHighByte; // 8 bit

#if defined(DECODE_ONKYO) // Decodes NEC and Apple as Onkyo
    // Here only Onkyo protocol is supported -> force 16 bit address and command decoding. No NEC decoding possible!
    decodedIRData.address = tValue.UWord.LowWord; // first 16 bit
    decodedIRData.protocol = ONKYO;
    decodedIRData.command = tValue.UWord.HighWord; // 16 bit command
#else
    // Address
    if (tValue.UWord.LowWord == APPLE_ADDRESS) {
        /*
         * Apple
         */