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57 lines
1.3 KiB
57 lines
1.3 KiB
#ifndef FX25_H_
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#define FX25_H_
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#ifdef ENABLE_FX25
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#include <stdint.h>
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#include <stdbool.h>
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#define FX25_MAX_BLOCK_SIZE 255
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struct Fx25Mode
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{
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uint64_t tag; //correlation tag
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uint16_t K; //data size
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uint8_t T; //parity check size
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};
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extern const struct Fx25Mode Fx25ModeList[11];
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/**
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* @brief Get FX.25 mode for given correlation tag
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* @param tag FX.25 correlation tag
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* @return FX.25 mode structure pointer or NULL if not a FX.25 tag
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*/
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const struct Fx25Mode* Fx25GetModeForTag(uint64_t tag);
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/**
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* @brief Get FX.25 mode for given payload size
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* @param size Payload size including flags and CRC
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* @return FX.25 mode structure pointer or NULL if standard AX.25 must be used
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*/
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const struct Fx25Mode* Fx25GetModeForSize(uint16_t size);
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/**
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* @brief Encode AX.25 packet using FX.25
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* @param *buffer Input full AX.25 packets with flags and output FX.25 packet
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* @param *mode FEC mode to use
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*/
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void Fx25Encode(uint8_t *buffer, const struct Fx25Mode *mode);
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/**
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* @brief Decode FX.25 packet to AX.25
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* @param *buffer Input FX.25 packet and output AX.25 packet
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* @param *mode FEC mode to use
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* @param *fixed Number of bytes corrected
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* @return True on success, false on failure
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*/
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bool Fx25Decode(uint8_t *buffer, const struct Fx25Mode *mode, uint8_t *fixed);
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/**
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* @brief Initialize FX.25 module
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*/
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void Fx25Init(void);
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#endif
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#endif /* FX25_H_ */
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