jens
290fd5f5e0
git-svn-id: http://moon:8086/svn/software/trunk/libsrc/radio@1 b431acfa-c32f-4a4a-93f1-934dc6c82436
62 lines
2.1 KiB
C
Executable File
62 lines
2.1 KiB
C
Executable File
// --------------------------------------------------------------
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#ifndef FRAME_H
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#define FRAME_H
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#include "radio_types.h"
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#include "cpx.h"
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// --------------------------------------------------------------
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// Constants
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// --------------------------------------------------------------
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#define FRAME_CRC16_IV 0x0000
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#define FRAME_CRC16_POLY 0x1021
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#define FRAME_PREAMBLE_IV 0x55
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#define FRAME_SCRAMBLER_SEED 0x12345678
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#define FRAME_SCRAMBLER_POLY 0x80C18601
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#define FRAME_NUM_BYTES_PER_FRAME 32
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#define FRAME_TYPE_IDLE 0x01
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#define FRAME_TYPE_DATA 0x02
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// --------------------------------------------------------------
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// Types
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// --------------------------------------------------------------
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typedef struct _frame_hdr_t
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{
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uint8_t preamble[2];
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uint32_t prn_state;
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uint16_t crc16;
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uint16_t type;
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uint16_t length;
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} frame_hdr_t;
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typedef struct _frame_t
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{
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frame_hdr_t hdr;
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uint8_t data[FRAME_NUM_BYTES_PER_FRAME];
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} frame_t;
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// --------------------------------------------------------------
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// Functions
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// --------------------------------------------------------------
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#ifdef __cplusplus
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extern "C" {
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#endif
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uint32_t Scramble(uint8_t *pSrcDst, uint32_t state, uint32_t poly, uint32_t len);
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uint32_t FrameCalcNumStreamBytes(uint32_t len_raw);
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uint32_t FrameFormat(uint8_t *pRaw, uint8_t *pFormatted, uint32_t len_raw, uint32_t *pPrn_state, uint16_t frame_type);
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uint32_t FrameDeformat(uint8_t *pFormatted, uint8_t *pRaw, uint32_t len_formatted, uint16_t frame_type);
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uint32_t FrameSerialize(uint8_t *pSrc, uint8_t *pDst, uint32_t nBitsPerSym, uint32_t srclen);
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uint32_t FrameDeSerialize(uint8_t *pSrc, uint8_t *pDst, uint32_t nBitsPerSym, uint32_t srclen, uint16_t frame_type);
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uint32_t FrameSymbolsMap(uint8_t *pBits, cpx_t *pSym, uint32_t nBitsPerSym, uint32_t num_syms, uint32_t type);
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uint32_t FrameSymbolsDemap(cpx_t *pSym, uint8_t *pBits, uint32_t nBitsPerSym, uint32_t num_syms, uint32_t type);
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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// --------------------------------------------------------------
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#endif // FRAME_H
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