2 * Copyright (C) 2019, 2020 "IoT.bzh"
3 * Author "Arthur Guyader" <arthur.guyader@iot.bzh>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include "converter.hpp"
21 #include <afb/afb-binding>
25 * @brief Convert data to hex string
27 * @param data An array of data
28 * @param length The length of the data
29 * @return std::string The hex string
31 std::string converter_t::to_hex(const uint8_t data[], const size_t length)
33 std::stringstream stream;
34 stream << std::hex << std::setfill('0');
35 for(int i = 0; i < length; i++)
36 stream << std::setfill('0') << std::setw(2) << std::hex << ((int) data[i]);
42 * @brief Convert data to ascii string
44 * @param data An array of data
45 * @param length The length of the data
46 * @return std::string The ascii string
48 std::string converter_t::to_ascii(const uint8_t data[], const size_t length)
50 std::stringstream stream;
51 for(int i = 0; i < length; i++)
52 stream << ((char) data[i]);
57 * @brief Translate bit_position and bit_size
60 * @param bit_position The position in the frame
61 * @param bit_size The size of the signal
62 * @param new_start_byte The first bytes of the signal in the frame
63 * @param new_end_byte The last byte of the signal in the frame
64 * @param new_start_bit The first bit of the signal in the frame
65 * @param new_end_bit The last bit of the signal in the frame
67 void converter_t::signal_to_bits_bytes(unsigned int bit_position, unsigned int bit_size, int &new_start_byte, int &new_end_byte, uint8_t &new_start_bit, uint8_t &new_end_bit)
69 new_start_byte = bit_position >> 3;
70 new_start_bit = bit_position % CHAR_BIT;
71 new_end_byte = (bit_position + bit_size - 1) >> 3;
72 new_end_bit = (bit_position + bit_size - 1) % CHAR_BIT;
77 * @brief This is to use when you have a big endian CAN frame layout.
78 * It converts the bit position so it matches with little endiant CAN frame layout.
80 * @param msg_length Message length in bytes.
81 * @param bit_position Original bit position.
82 * @param bit_size Size of the data.
83 * @return uint32_t New bit position.
85 uint32_t converter_t::bit_position_swap(unsigned int msg_length, unsigned int bit_position, unsigned int bit_size)
87 return (msg_length * CHAR_BIT) - bit_position - bit_size;
91 * @brief This allow to get the correct bit_position using the weird Continental.
92 * bit numbering method where the Frame is read using little endianness
93 * and bit count using a big endianness
95 * @param msg_length Message length in bytes.
96 * @param bit_position Original bit position.
97 * @param bit_size Size of the data.
98 * @return uint32_t New bit position.
100 uint32_t converter_t::continental_bit_position_mess(unsigned int msg_length, unsigned int bit_position, unsigned int bit_size)
102 return bit_position + (CHAR_BIT - bit_position % CHAR_BIT) - bit_size;