Function sendExtendedNEC

src/TinyIRSender.hpp:267–332

* Send Extended NEC with a forced 16 bit address and 8 or 16 bit command depending on the value of aCommand. * @param aAddress - Send 16 bit address. * @param aCommand - If aCommand < 0x100 send 8 bit command and 8 bit inverted command, else send 16 bit command. * @param aNumberOfRepeats - Number of repeats send at a period of 110 ms. * @param aSendNEC2Repeats - Instead of sending the NEC s

 * @param aSendNEC2Repeats - Instead of sending the NEC special repeat code, send the original frame for repeat.
 */
void sendExtendedNEC(uint8_t aSendPin, uint16_t aAddress, uint16_t aCommand, uint_fast8_t aNumberOfRepeats, bool aSendNEC2Repeats) {
    pinModeFast(aSendPin, OUTPUT);

#if defined(LED_SEND_FEEDBACK_CODE) && defined(IR_FEEDBACK_LED_PIN)
    pinModeFast(IR_FEEDBACK_LED_PIN, OUTPUT);
#  if defined(FEEDBACK_LED_IS_ACTIVE_LOW)
    digitalWriteFast(IR_FEEDBACK_LED_PIN, LOW);
#  else
    digitalWriteFast(IR_FEEDBACK_LED_PIN, HIGH);
#  endif
#endif

    uint_fast8_t tNumberOfCommands = aNumberOfRepeats + 1;
    while (tNumberOfCommands > 0) {
        unsigned long tStartOfFrameMillis = millis();

        sendMark(aSendPin, NEC_HEADER_MARK);
        if ((!aSendNEC2Repeats) && (tNumberOfCommands < aNumberOfRepeats + 1)) {
            // send the NEC special repeat
            delayMicroseconds (NEC_REPEAT_HEADER_SPACE); // - 2250
        } else {
            // send header
            delayMicroseconds (NEC_HEADER_SPACE);
            LongUnion tData;
            tData.UWord.LowWord = aAddress;
            if (aCommand > 0xFF) {
                tData.UWord.HighWord = aCommand;
            } else {
                tData.UByte.MidHighByte = aCommand;
                tData.UByte.HighByte = ~aCommand; // LSB first
            }
            // Send data
            for (uint_fast8_t i = 0; i < NEC_BITS; ++i) {
                sendMark(aSendPin, NEC_BIT_MARK); // constant mark length

                if (tData.ULong & 1) {
                    delayMicroseconds (NEC_ONE_SPACE);
                } else {
                    delayMicroseconds (NEC_ZERO_SPACE);
                }
                tData.ULong >>= 1; // shift command for next bit
            }
        }        // send stop bit
        sendMark(aSendPin, NEC_BIT_MARK);

        tNumberOfCommands--;
        // skip last delay!
        if (tNumberOfCommands > 0) {
            /*
             * Check and fallback for wrong RepeatPeriodMillis parameter. I.e the repeat period must be greater than each frame duration.
             */
            auto tFrameDurationMillis = millis() - tStartOfFrameMillis;
            if (NEC_REPEAT_PERIOD / 1000 > tFrameDurationMillis) {
                delay(NEC_REPEAT_PERIOD / 1000 - tFrameDurationMillis);
            }
        }
    }
#if defined(LED_SEND_FEEDBACK_CODE) && defined(IR_FEEDBACK_LED_PIN)