Method computeLGRawDataAndChecksum

src/ir_LG.hpp:138–151

}

uint32_t IRsend::computeLGRawDataAndChecksum(uint8_t aAddress, uint16_t aCommand) {
    uint32_t tRawData = ((uint32_t) aAddress << (LG_COMMAND_BITS + LG_CHECKSUM_BITS)) | ((uint32_t) aCommand << LG_CHECKSUM_BITS);
    /*
     * My guess of the 4 bit checksum
     * Addition of all 4 nibbles of the 16 bit command
     */
    uint8_t tChecksum = 0;
    uint16_t tTempForChecksum = aCommand;
    for (int i = 0; i < 4; ++i) {
        tChecksum += tTempForChecksum & 0xF; // add low nibble
        tTempForChecksum >>= 4; // shift by a nibble
    }
    return (tRawData | (tChecksum & 0xF));
}

void IRsend::sendLG(uint8_t aAddress, uint16_t aCommand, int_fast8_t aNumberOfRepeats) {
    sendPulseDistanceWidth_P(&LGProtocolConstants, computeLGRawDataAndChecksum(aAddress, aCommand), LG_BITS, aNumberOfRepeats);