Method decodeFAST

src/ir_FAST.hpp:96–137

}

bool IRrecv::decodeFAST() {

//    uint_fast8_t tRawlen = decodedIRData.rawlen; // Using a local variable does not improve code size

    // Check we have the right amount of data (36). The +4 is for initial gap, start bit mark and space + stop bit mark.
    if (decodedIRData.rawlen != ((2 * FAST_BITS) + 4)) {
        DEBUG_PRINT(F("FAST: Data length="));
        DEBUG_PRINT(decodedIRData.rawlen);
        DEBUG_PRINTLN(F(" is not 36"));
        return false;
    }

    if (!checkHeader_P(&FASTProtocolConstants)) {
        return false;
    }

    decodePulseDistanceWidthData_P(&FASTProtocolConstants, FAST_BITS);
    WordUnion tValue;
    tValue.UWord = decodedIRData.decodedRawData;

    if (tValue.UByte.LowByte != (uint8_t) ~(tValue.UByte.HighByte)) {
        DEBUG_PRINT(F("FAST: 8 bit parity is not correct. Expected=0x"));
        DEBUG_PRINT((uint8_t) ~(tValue.UByte.LowByte), HEX);
        DEBUG_PRINT(F(" received=0x"));
        DEBUG_PRINT(tValue.UByte.HighByte, HEX);
        DEBUG_PRINT(F(" data=0x"));
        DEBUG_PRINTLN(tValue.UWord, HEX);

        decodedIRData.flags = IRDATA_FLAGS_PARITY_FAILED;
    }

    checkForRepeatSpaceTicksAndSetFlag(FAST_MAXIMUM_REPEAT_DISTANCE / MICROS_PER_TICK);

    // Success
//    decodedIRData.flags = IRDATA_FLAGS_IS_LSB_FIRST; // Not required, since this is the start value
    decodedIRData.command = tValue.UByte.LowByte;
    decodedIRData.address = 0; // No address for this protocol
    decodedIRData.numberOfBits = FAST_BITS;
    decodedIRData.protocol = FAST;

    return true;
}

/** @}*/
#include "LocalDebugLevelEnd.h"