SyncHome/trunk/Arduino/libraries/IRremote/src/ir_Sanyo.cpp

#include "IRremote.h"

//==============================================================================
//                      SSSS   AAA   N   N  Y   Y   OOO
//                     S      A   A  NN  N   Y Y   O   O
//                      SSS   AAAAA  N N N    Y    O   O
//                         S  A   A  N  NN    Y    O   O
//                     SSSS   A   A  N   N    Y     OOO
//==============================================================================

// I think this is a Sanyo decoder:  Serial = SA 8650B
// Looks like Sony except for timings, 48 chars of data and time/space different

#define SANYO_BITS                   12
#define SANYO_HEADER_MARK	           3500  // seen range 3500
#define SANYO_HEADER_SPACE	            950  // seen 950
#define SANYO_ONE_MARK	           2400  // seen 2400
#define SANYO_ZERO_MARK             700  // seen 700
#define SANYO_DOUBLE_SPACE_USECS    800  // usually see 713 - not using ticks as get number wrap around
#define SANYO_RPT_LENGTH          45000

//+=============================================================================
#if DECODE_SANYO
bool IRrecv::decodeSanyo() {
    long data = 0;
    unsigned int offset = 0;  // Skip first space  <-- CHECK THIS!

    if (results.rawlen < (2 * SANYO_BITS) + 2) {
        return false;
    }

#if 0
	// Put this back in for debugging - note can't use #DEBUG as if Debug on we don't see the repeat cos of the delay
	Serial.print("IR Gap: ");
	Serial.println( results.rawbuf[offset] * MICROS_PER_TICK);
	Serial.println( "test against:");
	Serial.println(SANYO_DOUBLE_SPACE_USECS);
#endif

// Initial space
    if ((results.rawbuf[offset] * MICROS_PER_TICK) < SANYO_DOUBLE_SPACE_USECS) {
        //Serial.print("IR Gap found: ");
        results.bits = 0;
        results.value = REPEAT;
        results.isRepeat = true;
        results.decode_type = SANYO;
        return true;
    }
    offset++;

    // Initial mark
    if (!MATCH_MARK(results.rawbuf[offset], SANYO_HEADER_MARK)) {
        return false;
    }
    offset++;

    // Skip Second Mark
    if (!MATCH_MARK(results.rawbuf[offset], SANYO_HEADER_MARK)) {
        return false;
    }
    offset++;

    while (offset + 1 < irparams.rawlen) {
        if (!MATCH_SPACE(results.rawbuf[offset], SANYO_HEADER_SPACE)) {
            break;
        }
        offset++;

        if (MATCH_MARK(results.rawbuf[offset], SANYO_ONE_MARK)) {
            data = (data << 1) | 1;
        } else if (MATCH_MARK(results.rawbuf[offset], SANYO_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 = SANYO;
    return true;
}
bool IRrecv::decodeSanyo(decode_results *aResults) {
    bool aReturnValue = decodeSanyo();
    *aResults = results;
    return aReturnValue;
}
#endif