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Initial commit on github.

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Roland Jax
2013-11-14 21:15:14 +01:00
parent 36fc9f23c2
commit 916ec20456
37 changed files with 8561 additions and 2 deletions
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lib/ebus-decode.h
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/*
* Copyright (C) Roland Jax 2012-2013 <roland.jax@liwest.at>
* crc calculations from http://www.mikrocontroller.net/topic/75698
*
* This file is part of ebusd.
*
* ebusd is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* ebusd is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with ebusd. If not, see http://www.gnu.org/licenses/.
*/
/**
* @file ebus-decode.h
* @brief ebus decode functions
* @author roland.jax@liwest.at
* @version 0.1
*/
/*
* name type description resolution substitue
* BCD CHAR 0 ... + 99 1 FFh
* DATA1b SIGNED CHAR - 127 ... + 127 1 80h
* DATA1c CHAR 0 ... + 100 0,5 FFh
* DATA2b SIGNED INTEGER - 127,99 ... + 127,99 1/256 8000h
* DATA2c SIGNED INTEGER -2047,9 ... + 2047,9 1/16 8000h
*/
#ifndef EBUS_DECODE_H_
#define EBUS_DECODE_H_
#include "ebus-common.h"
/**
* @brief calculate integer value of given hex byte
* @param [in] *buf hex byte
* @return integer value | -1 if given byte is no hex value
*/
int eb_htoi(const char *buf);
/**
* @brief print received results in a specific format
* @param [out] *buf pointer to a byte array
* @param [out] *buflen length of byte array
* @return none
*/
void eb_esc(unsigned char *buf, int *buflen);
/**
* @brief print received results in a specific format
* @param [out] *buf pointer to a byte array
* @param [out] *buflen length of byte array
* @return none
*/
void eb_unesc(unsigned char *buf, int *buflen);
/**
* @brief convert hex bytes to day
* @param [in] day hex byte
* @param [out] *tgt pointer to day string xxx
* @return 0 OK | -1 values out of range
*/
int eb_day_to_str(unsigned char day, char *tgt);
/**
* @brief convert hex bytes to date
* @param [in] dd day hex byte
* @param [in] mm month hex byte
* @param [in] yy year hex byte
* @param [out] *tgt pointer to date string dd.mm.yyyy
* @return 0 OK | -1 values out of range
*/
int eb_dat_to_str(unsigned char dd, unsigned char mm, unsigned char yy, char *tgt);
/**
* @brief convert char date string to hex
* @param [in] dd day int value
* @param [in] mm month int value
* @param [in] yy year int value
* @param [out] *tgt pointer to hex
* @return 0 OK | -1 values out of range
*/
int eb_str_to_dat(int dd, int mm, int yy, unsigned char *tgt);
/**
* @brief convert hex bytes to date
* @param [in] hh hour hex byte
* @param [in] mm minute hex byte
* @param [in] ss second hex byte
* @param [out] *tgt pointer to date string hh:mm:ss
* @return 0 OK | -1 values out of range
*/
int eb_tim_to_str(unsigned char hh, unsigned char mm, unsigned char ss, char *tgt);
/**
* @brief convert char time string to hex
* @param [in] hh hour int value
* @param [in] mm minute int value
* @param [in] ss second int value
* @param [out] *tgt pointer to hex
* @return 0 OK | -1 values out of range
*/
int eb_str_to_tim(int hh, int mm, int ss, unsigned char *tgt);
/**
* @brief convert bcd hex byte to int
* @param [in] src bcd hex byte
* @param [out] *tgt pointer to int value
* @return 0 substitute value | 1 positive value
*/
int eb_bcd_to_int(unsigned char src, int *tgt);
/**
* @brief convert int to bcd hex byte
* @param [in] src int value
* @param [out] *tgt pointer to hex byte
* @return 0 substitute value | 1 positive value
*/
int eb_int_to_bcd(int src, unsigned char *tgt);
/**
* @brief convert data1b hex byte to int
* @param [in] src data1b hex byte
* @param [out] *tgt pointer to int value
* @return 0 substitute value | 1 positive value | -1 negative value
*/
int eb_d1b_to_int(unsigned char src, int *tgt);
/**
* @brief convert int to data1b hex byte
* @param [in] src int value
* @param [out] *tgt pointer to data1b hex byte
* @return 0 substitute value | 1 positive value | -1 negative value
*/
int eb_int_to_d1b(int src, unsigned char *tgt);
/**
* @brief convert data1c hex byte to float
* @param [in] src data1c hex byte
* @param [out] *tgt pointer to float value
* @return 0 substitute value | 1 positive value | -1 negative value
*/
int eb_d1c_to_float(unsigned char src, float *tgt);
/**
* @brief convert float to data1c hex byte
* @param [in] src float value
* @param [out] *tgt pointer to data1c hex byte
* @return 0 substitute value | 1 positive value | -1 negative value
*/
int eb_float_to_d1c(float src, unsigned char *tgt);
/**
* @brief convert data2b hex bytes to float
* @param [in] src_lsb least significant data2b hex byte
* @param [in] src_msb most significant data2b hex byte
* @param [out] *tgt pointer to float value
* @return 0 substitute value | 1 positive value | -1 negative value
*/
int eb_d2b_to_float(unsigned char src_lsb, unsigned char src_msb, float *tgt);
/**
* @brief convert float to data2b hex bytes
* @param [in] src float value
* @param [out] *tgt_lsb pointer to least significant data2b hex byte
* @param [out] *tgt_msb pointer to most significant data2b hex byte
* @return 0 substitute value | 1 positive value | -1 negative value
*/
int eb_float_to_d2b(float src, unsigned char *tgt_lsb, unsigned char *tgt_msb);
/**
* @brief convert data2c hex bytes to float
* @param [in] src_lsb least significant data2c hex byte
* @param [in] src_msb most significant data2c hex byte
* @param [out] *tgt pointer to float value
* @return 0 substitute value | 1 positive value | -1 negative value
*/
int eb_d2c_to_float(unsigned char src_lsb, unsigned char src_msb, float *tgt);
/**
* @brief convert float to data2c hex bytes
* @param [in] src float value
* @param [out] *tgt_lsb pointer to least significant data2c hex byte
* @param [out] *tgt_msb pointer to most significant data2c hex byte
* @return 0 substitute value | 1 positive value | -1 negative value
*/
int eb_float_to_d2c(float src, unsigned char *tgt_lsb, unsigned char *tgt_msb);
/**
* @brief calculate crc of hex byte
* @param [in] byte byte to calculate
* @param [in] init_crc start value for calculation
* @return new calculated crc byte from byte and init crc byte
*/
unsigned char eb_calc_crc_byte(unsigned char byte, unsigned char init_crc);
/**
* @brief calculate crc of given hex array
*
* \li crc calculation "CRC-8-WCDMA" with Polynom "x^8+x^7+x^4+x^3+x+1"
* \li crc calculations by http://www.mikrocontroller.net/topic/75698
*
* @param [in] *bytes pointer to a byte array
* @param [in] size length of given bytes
* @return calculated crc byte
*/
unsigned char eb_calc_crc(const unsigned char *bytes, int size);
#endif /* EBUS_DECODE_H_ */