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Diffstat (limited to 'low-can-binding/can/message/j1939-message.cpp')
| -rw-r--r-- | low-can-binding/can/message/j1939-message.cpp | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/low-can-binding/can/message/j1939-message.cpp b/low-can-binding/can/message/j1939-message.cpp new file mode 100644 index 00000000..8269cbfa --- /dev/null +++ b/low-can-binding/can/message/j1939-message.cpp @@ -0,0 +1,163 @@ +/* + * Copyright (C) 2018, 2019 "IoT.bzh" + * Author "Arthur Guyader" <arthur.guyader@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "./j1939-message.hpp" +#include <cstring> +#include "../../binding/low-can-hat.hpp" + + +/// +/// @brief Class constructor +/// +/// j1939_message_t class constructor. +/// +j1939_message_t::j1939_message_t(): + message_t(), + name_{0}, + pgn_{0}, + addr_{0} +{} + +j1939_message_t::j1939_message_t(uint8_t length, + can_message_format_t format, + std::vector<uint8_t>& data, + uint64_t timestamp, + name_t name, + pgn_t pgn, + uint8_t addr): + message_t(length, format, data, timestamp), + name_{name}, + pgn_{pgn}, + addr_{addr} +{} + +/// +/// @brief Retrieve name_ member value. +/// +/// @return name_ class member +/// +uint64_t j1939_message_t::get_name() const { + return name_; +} + +/// +/// @brief Retrieve pgn_ member value. +/// +/// @return pgn_ class member +/// +uint32_t j1939_message_t::get_pgn() const{ + return pgn_; +} + +/// +/// @brief Retrieve addr_ member value. +/// +/// @return addr_ class member +/// +uint8_t j1939_message_t::get_addr() const{ + return addr_; +} + + +/// @brief Take a sockaddr_can struct and array of data to initialize class members +/// +/// This is the preferred way to initialize class members. +/// +/// @param[in] addr - sockaddr_can to get pgn, name and addr +/// @param[in] data - array of data get from the j1939 socket +/// @param[in] nbytes - size of the array of data +/// @param[in] timestamp - timestamp of the message +/// +/// @return A j1939_message_t object fully initialized with sockaddr_can and data values. +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) +{ + uint8_t length = 0; + can_message_format_t format; + std::vector<uint8_t> dataVector; + + if(nbytes > J1939_MAX_DLEN) + { + AFB_DEBUG("Unsupported j1939 frame"); + format = can_message_format_t::INVALID; + } + else + { + AFB_DEBUG("Got a j1939 frame"); + format = can_message_format_t::J1939; + } + + length = (uint8_t) nbytes; + dataVector.reserve(length); + int i; + dataVector.clear(); + for(i=0;i<length;i++) + { + dataVector.push_back(data[i]); + }; + + AFB_DEBUG("Found pgn: %X, format: %X, length: %X, data %02X%02X%02X%02X%02X%02X%02X%02X", + addr.can_addr.j1939.pgn, (uint8_t)format, length, data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7]); + + return std::make_shared<j1939_message_t>(j1939_message_t(length, format, dataVector, timestamp,addr.can_addr.j1939.name,addr.can_addr.j1939.pgn,addr.can_addr.j1939.addr)); +} + +/// @brief Test if members pgn_ and length are set. +/// +/// @return boolean - true = set - false = not set +bool j1939_message_t::is_set() +{ + return (pgn_ != 0 && length_ != 0); +} + +/// @brief Generate a string with informations about the message +/// +/// @return Debug message with informations about members +std::string j1939_message_t::get_debug_message() +{ + std::string ret = ""; + ret = ret + "Here is the next j1939 message : pgn " + std::to_string(pgn_) + " length " + std::to_string(length_) + ", data "; + for (size_t i = 0; i < data_.size(); i++) + { + ret = ret + std::to_string(data_[i]); + } + return ret; +} + +/// +/// @brief Retrieve pgn_ member value. +/// +/// @return pgn_ class member +/// +uint32_t j1939_message_t::get_id() const +{ + AFB_WARNING("Prefer method get_pgn() for j1939 messages"); + return get_pgn(); +} + + +struct bcm_msg j1939_message_t::get_bcm_msg() +{ + AFB_WARNING("Not implemented"); + struct bcm_msg bcm_msg; + ::memset(&bcm_msg, 0, sizeof(struct bcm_msg)); + return bcm_msg; +} + +void j1939_message_t::set_bcm_msg(struct bcm_msg bcm_msg) +{ + AFB_WARNING("Not implemented"); +} |