2022-11-04 09:35:17 +01:00
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//**************************************************************************************
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/*! \copyright: 2020-2021 Thales Alenia Space Deutschland GmbH
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* \project: multiMIND
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* \file: (name of source file: hdlc.h)
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* \date: (09.02.2022)
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* \author: (Stelios Filippopoulos)
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* \brief: (hdlc header file)
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* \language: (C)
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**************************************************************************************
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*/
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#ifndef LIB_HDLC_H_
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#define LIB_HDLC_H_
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2022-11-04 12:38:30 +01:00
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stddef.h>
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2022-11-04 09:35:17 +01:00
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#define HDLC_ENABLE
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#define HDLC_START_BYTE (0x7Eu)
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#define HDLC_ESC_BYTE (0x7Du)
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#define HDLC_END_BYTE (0x7Cu)
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#define HDLC_ESCAPE_CHAR (0x20u)
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2022-11-04 12:38:30 +01:00
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void hdlc_add_framing(const uint8_t *src, size_t slen, uint8_t *dst, size_t *dlen);
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2022-11-16 14:42:18 +01:00
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/**
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* Decode a HDLC frame, including CRC check and CRC removal in addition
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* to the removal of the frame markers.
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* @param src
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* @param slen
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* @param dst
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* @param dlen
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* @return
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* -1 Invalid source length
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* -2 No start marker at first byte or end marker at slen - 1
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* 1 Invalid CRC
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* 0 CRC OK, framing and CRC removed
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*/
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int hdlc_remove_framing_with_crc_check(const uint8_t *src, size_t slen, uint8_t *dst, size_t *dlen);
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2022-11-04 09:35:17 +01:00
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2022-11-04 12:38:30 +01:00
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#ifdef __cplusplus
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}
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#endif
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2022-11-04 09:35:17 +01:00
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#endif /* LIB_HDLC_H_ */
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