2 * Copyright (C) 2018, 2019 "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.
21 #include "../../binding/low-can-hat.hpp"
22 #include "../../utils/converter.hpp"
23 #include "j1939-message.hpp"
26 * @brief Construct a new j1939 message t::j1939 message t object
29 j1939_message_t::j1939_message_t():
37 * @brief Construct a new j1939 message t::j1939 message t object
39 * @param length The length of the message
40 * @param format The format of the message
41 * @param data The vector data of the message
42 * @param timestamp The timetamp of the message
43 * @param name The name of the message
44 * @param pgn The PGN of the message
45 * @param addr The address of the message
47 j1939_message_t::j1939_message_t(uint32_t length,
48 std::vector<uint8_t>& data,
53 message_t(J1939_MAX_DLEN, length, J1939_PROTOCOL, data, timestamp),
60 /// @brief Retrieve name_ member value.
62 /// @return name_ class member
64 uint64_t j1939_message_t::get_name() const {
69 /// @brief Retrieve pgn_ member value.
71 /// @return pgn_ class member
73 uint32_t j1939_message_t::get_pgn() const{
78 /// @brief Retrieve addr_ member value.
80 /// @return addr_ class member
82 uint8_t j1939_message_t::get_addr() const{
87 /// @brief Take a sockaddr_can struct and array of data to initialize class members
89 /// This is the preferred way to initialize class members.
91 /// @param[in] addr - sockaddr_can to get pgn, name and addr
92 /// @param[in] data - array of data get from the j1939 socket
93 /// @param[in] nbytes - size of the array of data
94 /// @param[in] timestamp - timestamp of the message
96 /// @return A j1939_message_t object fully initialized with sockaddr_can and data values.
97 std::shared_ptr<j1939_message_t> j1939_message_t::convert_from_addr(struct sockaddr_can& addr, uint8_t (&data)[128],size_t nbytes, uint64_t timestamp)
102 std::vector<uint8_t> data_vector;
104 if(nbytes > J1939_MAX_DLEN)
106 AFB_DEBUG("Unsupported j1939 frame");
107 return std::make_shared<j1939_message_t>(j1939_message_t());
110 length = (uint32_t) nbytes;
111 data_vector.reserve(length);
115 std::string data_string;
116 data_string = converter_t::to_hex(data,length);
118 for(i=0;i<length;i++)
120 data_vector.push_back(data[i]);
123 AFB_DEBUG("Found pgn: %X, length: %X, data %s",
124 addr.can_addr.j1939.pgn, length, data_string.c_str());
126 return std::make_shared<j1939_message_t>(j1939_message_t(length, data_vector, timestamp,addr.can_addr.j1939.name,addr.can_addr.j1939.pgn,addr.can_addr.j1939.addr));
129 /// @brief Test if members pgn_ and length are set.
131 /// @return boolean - true = set - false = not set
132 bool j1939_message_t::is_set()
134 return (pgn_ != 0 && length_ != 0);
137 /// @brief Generate a string with informations about the message
139 /// @return Debug message with informations about members
140 std::string j1939_message_t::get_debug_message()
142 std::string ret = "";
143 ret = ret + "Here is the next j1939 message : pgn " + std::to_string(pgn_) + " length " + std::to_string(length_) + ", data ";
144 for (size_t i = 0; i < data_.size(); i++)
146 ret = ret + std::to_string(data_[i]);
152 /// @brief Retrieve pgn_ member value.
154 /// @return pgn_ class member
156 uint32_t j1939_message_t::get_id() const
158 AFB_DEBUG("Prefer method get_pgn() for j1939 messages");
163 * @brief Return the sockname of the message
165 * @return struct sockaddr_can The sockname of the message
167 struct sockaddr_can j1939_message_t::get_sockname()
173 * @brief Allows to set a sockname at a message to send it after
175 * @param sockname The sockname of the message
177 void j1939_message_t::set_sockname(struct sockaddr_can sockname)
179 sockname_ = sockname;
183 * @brief Allows to generate a sockname for the message
185 * @param pgn The pgn for the sockname
186 * @param name The name for the sockname
187 * @param addr The address for the sockname
189 void j1939_message_t::set_sockname(pgn_t pgn, name_t name, uint8_t addr)
191 memset(&sockname_, 0, sizeof(sockname_));
192 sockname_.can_family = AF_CAN;
193 sockname_.can_ifindex = 0;
195 if(addr <= 0 || addr >= UINT8_MAX )
197 sockname_.can_addr.j1939.addr = J1939_NO_ADDR;
201 sockname_.can_addr.j1939.addr = addr;
204 if(name <= 0 || name >= UINT64_MAX )
206 sockname_.can_addr.j1939.name = J1939_NO_NAME;
210 sockname_.can_addr.j1939.name = name;
213 if(pgn <= 0 || pgn > J1939_PGN_MAX)
215 sockname_.can_addr.j1939.pgn = J1939_NO_PGN;
219 sockname_.can_addr.j1939.pgn = pgn;