#include

void?golay_enc（u16*?golay_enc_in?u16*?golay_enc_out）;

int?golay_dec（u16*?golay_dec_in?u16*?golay_dec_out）;

/**************************************************************************
?*?Function:?Golay（24128）?Encoder?and?Decoder?for?DMR?standard.?????????*
?*?Reference:?????????????????????????????????????????????????????????????*
?*???1:?DMR?standard?ts_10236101v010405p.pdf?page?128.???????????????????*
?*???2:?Error?Control?Coding/Second?Edition/Lin?Shu/Ch04.pdf/page?27.?????*
?*???3:?Generator?polynomial:?g（X）=X^11+X^10+X^6+X^5+X^4+X^2+1=6165_oct???*
?*???4:?There?are?two?different?generator?polynomials.????????????????????*
?*????????????????????????????????????????????????????????????????????????*
?*************************************************************************/

//=====?Bit?Struct?====
//|<-????Info????->|<-??Parity?->|
//________________________________
//|23|22|?...|13|12|11|10|...|1|0|
//----------------------------

//=====?golay?table?======
//?G?=?[I_12?P]
//?H?=?[Q?I_12]
static?const?u16?P[]?=
{
????0xc75??//?1100_0111_0101
????0x63b??//?0110_0011_1011
????0xf68??//?1111_0110_1000
????0x7b4??//?0111_1011_0100

????0x3da??//?0011_1101_1010
????0xd99??//?1101_1001_1001
????0x6cd??//?0110_1100_1101
????0x367??//?0011_0110_0111

????0xdc6??//?1101_1100_0110
????0xa97??//?1010_1001_0111
????0x93e??//?1001_0011_1110
????0x8eb???//?1000_1110_1011
};

static?const?u16?Q[]?=?????//?Q?=?P‘?=?inv（P）
{
????0xa4f??//?1010_0100_1111
????0xf68??//?1111_0110_1000
????0x7b4??//?0111_1011_0100
????0x3da??//?0011_1101_1010

????0x1ed??//?0001_1110_1101
????0xab9??//?1010_1011_1001
????0xf13??//?1111_0001_0011
????0xdc6??//?1101_1100_0110

????0x6e3??//?0110_1110_0011
????0x93e??//?1001_0011_1110
????0x49f??//?0100_1001_1111
????0xc75???//?1100_0111_0101
};

//=====?golay_enc（）?======
//?function:?Golay（24128）?encoder.
//?input:???u16?golay_enc_in;
//?output:??u16?golay_enc_out[2];
//??????????golay_enc_out[0]?is?info?golay_enc_out[1]?is?parity.
//?Both?use?low?12?bits.?[golay_enc_out[0]?golay_enc_out[1]]?=?golay_enc_in?*?G.
//?No?return?value.
//#pragma?CODE_SECTION?（golay_enc?“.text1“）
void?golay_enc（u16*?golay_enc_in?u16*?golay_enc_out）
{
????u16?i?j;

????golay_enc_out[0]?=?*golay_enc_in;
????golay_enc_out[1]?=?0;
????for（i?=?0;?i?????{
????????j?=?golay_enc_out[0]?&?Q[i];
????????j?=?（j?&?0xff）?^?（j?>>?8）;
????????j?=?（j?&?0x0f）?^?（j?>>?4）;
????????j?=?（j?&?0x03）?^?（j?>>?2）;
????????j?=?（j?&?0x01）?^?（j?>>?1）;
????????golay_enc_out[1]?=?（golay_enc_out[1]?<????}
}

//=====?golay_dec（）?======
//?function:?Golay（24128）?decoder.
//?input:???u16?golay_dec_in[2];
//?output:??u16?golay_dec_out;
//??????????golay_dec_in[0]?