BYTE?xdata?_bIRRecvBuf[100];

BYTE?irRC6Decode（void）?large
{
??BYTE?irVal?irCnt?=?1?irBitCnt?=?1?irCodeVal?=?1;
??WORD?irHead?=?0;
??BYTE?i?=?1;
??

#if?0
??for（i=0;i<_bIRRecvCnt;i++）
??{
????DRS232LogB（_bIRRecvBuf[i]?i?_bIRRecvCnt?0xff）;
??}
??i=0;
#endif

??if?（（_bIRRecvCnt<0x20）?||?（_bIRRecvCnt>0x30））
????return?（_bIRKeyBuf?=?IR_NONE）;
??
??_bIRStatus?=?IR_WAIT_LEAD_CODE;

#if?1
??while?（i???{
????if?（（i<_bIRRecvCnt）?&&?（_bIRRecvBuf[i]?<=?1））
??????_bIRRecvBuf[i-1]?=?_bIRRecvBuf[i-1]-1;
????i++;
??}
??i=0;
#endif
??while?（i???{
????irVal?=?_bIRRecvBuf[i];

????if?（_bIRStatus?==?IR_WAIT_LEAD_CODE）??/*?leader?*/
????{
??????switch?（irVal）
??????{
????????case?0xff:
??????????irHead?=?0xff;
??????????break;

????????case?0x0F:
????????case?0x10:
????????case?0x11:
????????case?0x12:
??????????irHead?=?（irHead<<8）?|?0x11;
??????????break;

????????case?0x04:
????????case?0x05:
????????case?0x06:
??????????if?（irHead?!=?0xff11）
??????????{
????????????irHead?=?0;
????????????return?（_bIRKeyBuf?=?IR_NONE）;
??????????}
??????????irHead?=?0;
??????????_bIRStatus?=?IR_WAIT_NEW_CODE;
??????????break;

????????default:
??????????irHead?=?0;
??????????return?（_bIRKeyBuf?=?IR_NONE）;
??????}
????}
????else?if（_bIRStatus?>=?IR_WAIT_NEW_CODE）?//normal?bit
????{
??????/*?對于TR?bit，長度視為與normal?bit?相同*/
??????if?（_bIRStatus?==?IR_WAIT_TR_CODE）
??????{
????????if?（irVal???????????irVal?=?NARROWPULTIME-1;
??????}

??????if?（irCnt?&?0x01）??//?Singular
??????{
????????if?（irCnt?==?7）
??????????_bIRStatus?=?IR_WAIT_TR_CODE;

????????irCnt++;
??????}
??????else???//?plural
??????{
????????if?（irCnt?==?10）
????????????_bIRStatus?=?IR_WAIT_NEW_CODE;

????????if?（irVal?????????{
??????????irCodeVal?=?（irCodeVal<<1）?|?（irCodeVal?&?0x01）;
??????????irCnt++;
??????????irBitCnt++;
????????}
????????else??//時間較長，位翻轉
????????{
??????????irCodeVal?=?（~（irCodeVal?&?0x01）?&?0x1）?|?（irCodeVal<<1）;
??????????irCnt?+=?2;
??????????irBitCnt++;
????????}

????????switch（irBitCnt）
????????{
??????????case?4:
????????????//DRS232LogB（irCodeVal?0?0?0）;
????????????if?（irCodeVal?!=?0x08）
??????????????return?（_bIRKeyBuf?=?IR_NONE）;

????????????irCodeVal?&=?0x1;
????????????break;

??????????case?5:
????????????irCodeVal?&=?0x1;
????????????break;

??????????/*??IR_CUSTOM_CODE_RC6?*/
??????????case?13:
????????????//DRS232LogB（irCodeVal?1?1?1）;
????????????if?（irCodeVal?!=?IR_CUSTOM_CODE_RC6）
??????????????return?（_bIRKeyBuf?=?IR_NONE）;

????????????irCodeVal?&=?0x1;
????????????break;

??????????/*?解出碼值?*/
??????????case?21:
????????????//DRS232LogB（irCodeVal?2?2?2）;
????????????#if?1
????????????if?（（irVal?????????????????&&（（i==（_bIRRecvCnt-1））||（_bIRRecvBuf[i+1]>?NARROWPULTIME））
????????????????）
??????????????return?（_bIRKeyBuf?=?IR_NONE）;
????????????#endif
?

?屬性????????????大小?????日期????時間???名稱
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?????文件???????3314??2013-10-18?15:24??RC6.c

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?????????????????3314????????????????????1