ir_Sony.cpp

00001 #include "IRremote.h"
00002 #include "IRremoteInt.h"
00003 
00004 //==============================================================================
00005 //                           SSSS   OOO   N   N  Y   Y
00006 //                          S      O   O  NN  N   Y Y
00007 //                           SSS   O   O  N N N    Y
00008 //                              S  O   O  N  NN    Y
00009 //                          SSSS    OOO   N   N    Y
00010 //==============================================================================
00011 
00012 #define SONY_BITS                   12
00013 #define SONY_HDR_MARK             2400
00014 #define SONY_HDR_SPACE             600
00015 #define SONY_ONE_MARK             1200
00016 #define SONY_ZERO_MARK             600
00017 #define SONY_RPT_LENGTH          45000
00018 #define SONY_DOUBLE_SPACE_USECS    500  // usually ssee 713 - not using ticks as get number wrapround
00019 
00020 //+=============================================================================
00021 #if SEND_SONY
00022 void  IRsend::sendSony (unsigned long data,  int nbits)
00023 {
00024     // Set IR carrier frequency
00025     enableIROut(40);
00026 
00027     // Header
00028     mark(SONY_HDR_MARK);
00029     space(SONY_HDR_SPACE);
00030 
00031     // Data
00032     for (unsigned long  mask = 1UL << (nbits - 1);  mask;  mask >>= 1) {
00033         if (data & mask) {
00034             mark(SONY_ONE_MARK);
00035             space(SONY_HDR_SPACE);
00036         } else {
00037             mark(SONY_ZERO_MARK);
00038             space(SONY_HDR_SPACE);
00039         }
00040     }
00041 
00042     // We will have ended with LED off
00043 }
00044 #endif
00045 
00046 //+=============================================================================
00047 #if DECODE_SONY
00048 bool  IRrecv::decodeSony (decode_results *results)
00049 {
00050     long  data   = 0;
00051     int   offset = 0;  // Dont skip first space, check its size
00052 
00053     if (irparams.rawlen < (2 * SONY_BITS) + 2)  return false ;
00054 
00055     // Some Sony's deliver repeats fast after first
00056     // unfortunately can't spot difference from of repeat from two fast clicks
00057     if (results->rawbuf[offset] < SONY_DOUBLE_SPACE_USECS) {
00058         results->bits = 0;
00059         results->value = REPEAT;
00060 
00061 #   ifdef DECODE_SANYO
00062         results->decode_type = SANYO;
00063 #   else
00064         results->decode_type = UNKNOWN;
00065 #   endif
00066 
00067         return true;
00068     }
00069     offset++;
00070 
00071     // Initial mark
00072     if (!MATCH_MARK(results->rawbuf[offset++], SONY_HDR_MARK))  return false ;
00073 
00074     while (offset + 1 < irparams.rawlen) {
00075         if (!MATCH_SPACE(results->rawbuf[offset++], SONY_HDR_SPACE))  break ;
00076 
00077         if      (MATCH_MARK(results->rawbuf[offset], SONY_ONE_MARK))   data = (data << 1) | 1 ;
00078         else if (MATCH_MARK(results->rawbuf[offset], SONY_ZERO_MARK))  data = (data << 1) | 0 ;
00079         else                                                           return false ;
00080         offset++;
00081     }
00082 
00083     // Success
00084     results->bits = (offset - 1) / 2;
00085     if (results->bits < 12) {
00086         results->bits = 0;
00087         return false;
00088     }
00089     results->value       = data;
00090     results->decode_type = SONY;
00091     return true;
00092 }
00093 #endif
00094