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authorRomain Forlot <romain.forlot@iot.bzh>2017-03-06 22:28:50 +0100
committerRomain Forlot <romain.forlot@iot.bzh>2017-03-16 17:05:17 +0100
commitde8fb10e1d8e98a85dfba6fc8966266dbf5e42c6 (patch)
tree0eab1a766f80b7498d63fb8ecd36486c13b633a2 /src/can-bus.cpp
parent4fd376fac5b1d47eed3f22467ae5b5e35f1ec610 (diff)
Beginning of work on obd2 object and
files reorganization. Change-Id: Idaa7ad05c45d734ce771506fd6e41f1a09a6ac66 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to 'src/can-bus.cpp')
-rw-r--r--src/can-bus.cpp556
1 files changed, 0 insertions, 556 deletions
diff --git a/src/can-bus.cpp b/src/can-bus.cpp
deleted file mode 100644
index d46092bf..00000000
--- a/src/can-bus.cpp
+++ /dev/null
@@ -1,556 +0,0 @@
-/*
- * Copyright (C) 2015, 2016 "IoT.bzh"
- * Author "Romain Forlot" <romain.forlot@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 "can-bus.hpp"
-
-#include <map>
-#include <cerrno>
-#include <vector>
-#include <string>
-#include <fcntl.h>
-#include <unistd.h>
-#include <net/if.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <json-c/json.h>
-#include <linux/can/raw.h>
-
-#include "can-decoder.hpp"
-#include "openxc-utils.hpp"
-
-extern "C"
-{
- #include <afb/afb-binding.h>
-}
-
-/********************************************************************************
-*
-* can_bus_t method implementation
-*
-*********************************************************************************/
-/**
-* @brief Class constructor
-*
-* @param struct afb_binding_interface *interface between daemon and binding
-* @param int file handle to the json configuration file.
-*/
-can_bus_t::can_bus_t(int conf_file)
- : conf_file_{conf_file}
-{
-}
-
-/**
-* @brief thread to decoding raw CAN messages.
-*
-* @desc It will take from the can_message_q_ queue the next can message to process then it will search
-* about signal subscribed if there is a valid afb_event for it. We only decode signal for which a
-* subscription has been made. Can message will be decoded using translateSignal that will pass it to the
-* corresponding decoding function if there is one assigned for that signal. If not, it will be the default
-* noopDecoder function that will operate on it.
-*/
-void can_bus_t::can_decode_message()
-{
- can_message_t can_message;
- std::vector <CanSignal*> signals;
- openxc_VehicleMessage vehicle_message;
- openxc_DynamicField search_key, decoded_message;
-
- decoder_t decoder;
-
- while(is_decoding_)
- {
- std::unique_lock<std::mutex> can_message_lock(can_message_mutex_);
- new_can_message_.wait(can_message_lock);
- can_message = next_can_message();
-
- /* First we have to found which CanSignal it is */
- search_key = build_DynamicField((double)can_message.get_id());
- signals.clear();
- find_can_signals(search_key, signals);
-
- /* Decoding the message ! Don't kill the messenger ! */
- for(auto& sig : signals)
- {
- std::lock_guard<std::mutex> subscribed_signals_lock(get_subscribed_signals_mutex());
- std::map<std::string, struct afb_event>& s = get_subscribed_signals();
-
- /* DEBUG message to make easier debugger STL containers...
- DEBUG(binder_interface, "Operator[] key char: %s, event valid? %d", sig.generic_name, afb_event_is_valid(s[sig.generic_name]));
- DEBUG(binder_interface, "Operator[] key string: %s, event valid? %d", sig.generic_name, afb_event_is_valid(s[std::string(sig.generic_name)]));
- DEBUG(binder_interface, "Nb elt matched char: %d", (int)s.count(sig.generic_name));
- DEBUG(binder_interface, "Nb elt matched string: %d", (int)s.count(std::string(sig.generic_name))); */
- if( s.find(sig->generic_name) != s.end() && afb_event_is_valid(s[sig->generic_name]))
- {
- decoded_message = decoder.translateSignal(*sig, can_message, get_can_signals());
-
- openxc_SimpleMessage s_message = build_SimpleMessage(sig->generic_name, decoded_message);
- vehicle_message = build_VehicleMessage_with_SimpleMessage(openxc_DynamicField_Type::openxc_DynamicField_Type_NUM, s_message);
-
- std::lock_guard<std::mutex> decoded_can_message_lock(decoded_can_message_mutex_);
- push_new_vehicle_message(vehicle_message);
- new_decoded_can_message_.notify_one();
- }
- }
- }
-}
-
-/**
-* @brief thread to push events to suscribers. It will read subscribed_signals map to look
-* which are events that has to be pushed.
-*/
-void can_bus_t::can_event_push()
-{
- openxc_VehicleMessage v_message;
- openxc_SimpleMessage s_message;
- json_object* jo;
-
- while(is_pushing_)
- {
- std::unique_lock<std::mutex> decoded_can_message_lock(decoded_can_message_mutex_);
- new_decoded_can_message_.wait(decoded_can_message_lock);
- v_message = next_vehicle_message();
-
- s_message = get_simple_message(v_message);
- {
- std::lock_guard<std::mutex> subscribed_signals_lock(get_subscribed_signals_mutex());
- std::map<std::string, struct afb_event>& s = get_subscribed_signals();
- if(s.find(std::string(s_message.name)) != s.end() && afb_event_is_valid(s[std::string(s_message.name)]))
- {
- jo = json_object_new_object();
- jsonify_simple(s_message, jo);
- afb_event_push(s[std::string(s_message.name)], jo);
- }
- }
- }
-}
-
-/**
- * @brief Will initialize threads that will decode
- * and push subscribed events.
- */
-void can_bus_t::start_threads()
-{
- v_ = true;
- th_decoding_ = std::thread(&can_bus_t::can_decode_message, this);
- if(!th_decoding_.joinable())
- is_decoding_ = false;
-
- is_pushing_ = true;
- th_pushing_ = std::thread(&can_bus_t::can_event_push, this);
- if(!th_pushing_.joinable())
- is_pushing_ = false;
-}
-
-/**
-* @brief Will stop all threads holded by can_bus_t object
-* which are decoding and pushing then will wait that's
-* they'll finish their job.
-*/
-void can_bus_t::stop_threads()
-{
- is_decoding_ = false;
- is_pushing_ = false;
-}
-
-/**
-* @brief Will initialize can_bus_dev_t objects after reading
-* the configuration file passed in the constructor.
-*/
-int can_bus_t::init_can_dev()
-{
- std::vector<std::string> devices_name;
- int i;
- size_t t;
-
- devices_name = read_conf();
-
- if (! devices_name.empty())
- {
- t = devices_name.size();
- i=0;
-
- for(const auto& device : devices_name)
- {
- can_devices_m_[device] = std::make_shared<can_bus_dev_t>(device);
- if (can_devices_m_[device]->open() == 0)
- {
- i++;
- DEBUG(binder_interface, "Start reading thread");
- NOTICE(binder_interface, "%s device opened and reading", device.c_str());
- can_devices_m_[device]->start_reading(*this);
- }
- else
- ERROR(binder_interface, "Can't open device %s", device.c_str());
- }
-
- NOTICE(binder_interface, "Initialized %d/%d can bus device(s)", i, t);
- return 0;
- }
- ERROR(binder_interface, "init_can_dev: Error at CAN device initialization. No devices read from configuration file. Did you specify canbus JSON object ?");
- return 1;
-}
-
-/**
-* @brief read the conf_file_ and will parse json objects
-* in it searching for canbus objects devices name.
-*
-* @return Vector of can bus device name string.
-*/
-std::vector<std::string> can_bus_t::read_conf()
-{
- std::vector<std::string> ret;
- json_object *jo, *canbus;
- int n, i;
- const char* taxi;
-
- FILE *fd = fdopen(conf_file_, "r");
- if (fd)
- {
- std::string fd_conf_content;
- std::fseek(fd, 0, SEEK_END);
- fd_conf_content.resize(std::ftell(fd));
- std::rewind(fd);
- std::fread(&fd_conf_content[0], 1, fd_conf_content.size(), fd);
- std::fclose(fd);
-
- DEBUG(binder_interface, "Configuration file content : %s", fd_conf_content.c_str());
- jo = json_tokener_parse(fd_conf_content.c_str());
-
- if (jo == NULL || !json_object_object_get_ex(jo, "canbus", &canbus))
- {/**
-* @brief Telling if the pushing thread is running
-* This is the boolean value on which the while loop
-* take its condition. Set it to false will stop the
-* according thread.
-*
-* @return true if pushing thread is running, false if not.
-*/
-
- ERROR(binder_interface, "Can't find canbus node in the configuration file. Please review it.");
- ret.clear();
- }
- else if (json_object_get_type(canbus) != json_type_array)
- {
- taxi = json_object_get_string(canbus);
- DEBUG(binder_interface, "Can bus found: %s", taxi);
- ret.push_back(std::string(taxi));
- }
- else
- {
- n = json_object_array_length(canbus);
- for (i = 0 ; i < n ; i++)
- ret.push_back(json_object_get_string(json_object_array_get_idx(canbus, i)));
- }
- return ret;
- }
- ERROR(binder_interface, "Problem at reading the conf file");
- ret.clear();
- return ret;
-}
-
-/**
-* @brief return new_can_message_ member
-*
-* @return return new_can_message_ member
-*/
-std::condition_variable& can_bus_t::get_new_can_message_cv()
-{
- return new_can_message_cv_;
-}
-
-/**
-* @brief return can_message_mutex_ member
-*
-* @return return can_message_mutex_ member
-*/
-std::mutex& can_bus_t::get_can_message_mutex()
-{
- return can_message_mutex_;
-}
-
-/**
-* @brief Return first can_message_t on the queue
-*
-* @return a can_message_t
-*/
-can_message_t can_bus_t::next_can_message()
-{
- can_message_t can_msg;
-
- if(!can_message_q_.empty())
- {
- can_msg = can_message_q_.front();
- can_message_q_.pop();
- DEBUG(binder_interface, "next_can_message: Here is the next can message : id %X, length %X, data %02X%02X%02X%02X%02X%02X%02X%02X", can_msg.get_id(), can_msg.get_length(),
- can_msg.get_data()[0], can_msg.get_data()[1], can_msg.get_data()[2], can_msg.get_data()[3], can_msg.get_data()[4], can_msg.get_data()[5], can_msg.get_data()[6], can_msg.get_data()[7]);
- return can_msg;
- }
-
- return can_msg;
-}
-
-/**
-* @brief Push a can_message_t into the queue
-*
-* @param the const reference can_message_t object to push into the queue
-*/
-void can_bus_t::push_new_can_message(const can_message_t& can_msg)
-{
- can_message_q_.push(can_msg);
-}
-
-/**
-* @brief Return first openxc_VehicleMessage on the queue
-*
-* @return a openxc_VehicleMessage containing a decoded can message
-*/
-openxc_VehicleMessage can_bus_t::next_vehicle_message()
-{
- openxc_VehicleMessage v_msg;
-
- if(! vehicle_message_q_.empty())
- {
- v_msg = vehicle_message_q_.front();
- vehicle_message_q_.pop();
- DEBUG(binder_interface, "next_vehicle_message: next vehicle message poped");
- return v_msg;
- }
-
- return v_msg;
-}
-
-/**
-* @brief Push a openxc_VehicleMessage into the queue
-*
-* @param the const reference openxc_VehicleMessage object to push into the queue
-*/
-void can_bus_t::push_new_vehicle_message(const openxc_VehicleMessage& v_msg)
-{
- vehicle_message_q_.push(v_msg);
-}
-
-/**
-* @brief Return a map with the can_bus_dev_t initialized
-*
-* @return map can_bus_dev_m_ map
-*/
-std::map<std::string, std::shared_ptr<can_bus_dev_t>> can_bus_t::get_can_devices()
-{
- return can_devices_m_;
-}
-
-/********************************************************************************
-*
-* can_bus_dev_t method implementation
-*
-*********************************************************************************/
-/**
-* @brief Class constructor
-*
-* @param const string representing the device name into the linux /dev tree
-*/
-can_bus_dev_t::can_bus_dev_t(const std::string &dev_name)
- : device_name_{dev_name}, can_socket_{-1}
-{
-}
-
-/**
-* @brief Open the can socket and returning it
-*
-* @return
-*/
-int can_bus_dev_t::open()
-{
- const int canfd_on = 1;
- const int timestamp_on = 1;
- struct ifreq ifr;
- struct timeval timeout;
-
- DEBUG(binder_interface, "CAN Handler socket : %d", can_socket_);
- if (can_socket_ >= 0)
- return 0;
-
- can_socket_ = ::socket(PF_CAN, SOCK_RAW, CAN_RAW);
- DEBUG(binder_interface, "CAN Handler socket correctly initialized : %d", can_socket_);
- if (can_socket_ < 0)
- ERROR(binder_interface, "socket could not be created. Error was : %s", ::strerror(errno));
- else
- {
- /* Set timeout for read */
- ::setsockopt(can_socket_, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout, sizeof(timeout));
- /* Set timestamp for receveid frame */
- if (::setsockopt(can_socket_, SOL_SOCKET, SO_TIMESTAMP, &timestamp_on, sizeof(timestamp_on)) < 0)
- WARNING(binder_interface, "setsockopt SO_TIMESTAMP error: %s", ::strerror(errno));
- DEBUG(binder_interface, "Switch CAN Handler socket to use fd mode");
- /* try to switch the socket into CAN_FD mode */
- if (::setsockopt(can_socket_, SOL_CAN_RAW, CAN_RAW_FD_FRAMES, &canfd_on, sizeof(canfd_on)) < 0)
- {
- NOTICE(binder_interface, "Can not switch into CAN Extended frame format.");
- is_fdmode_on_ = false;
- } else {
- DEBUG(binder_interface, "Correctly set up CAN socket to use FD frames.");
- is_fdmode_on_ = true;
- }
-
- /* Attempts to open a socket to CAN bus */
- ::strcpy(ifr.ifr_name, device_name_.c_str());
- DEBUG(binder_interface, "ifr_name is : %s", ifr.ifr_name);
- if(::ioctl(can_socket_, SIOCGIFINDEX, &ifr) < 0)
- ERROR(binder_interface, "ioctl failed. Error was : %s", strerror(errno));
- else
- {
- txAddress_.can_family = AF_CAN;
- txAddress_.can_ifindex = ifr.ifr_ifindex;
-
- /* And bind it to txAddress */
- DEBUG(binder_interface, "Bind the socket");
- if (::bind(can_socket_, (struct sockaddr *)&txAddress_, sizeof(txAddress_)) < 0)
- ERROR(binder_interface, "Bind failed. %s", strerror(errno));
- else
- return 0;
- }
- close();
- }
- return -1;
-}
-
-/**
- * @brief Open the can socket and returning it
- *
- * @return
- */
-int can_bus_dev_t::close()
-{
- ::close(can_socket_);
- can_socket_ = -1;
- return can_socket_;
-}
-
-/**
-* @brief Read the can socket and retrieve canfd_frame
-*
-* @param const struct afb_binding_interface* interface pointer. Used to be able to log
-* using application framework logger.
-*/
-std::pair<struct canfd_frame&, size_t> can_bus_dev_t::read()
-{
- ssize_t nbytes;
- //int maxdlen;
- struct canfd_frame cfd;
-
- /* Test that socket is really opened */
- if (can_socket_ < 0)
- {
- ERROR(binder_interface, "read_can: Socket unavailable. Closing thread.");
- is_running_ = false;
- }
-
- nbytes = ::read(can_socket_, &cfd, CANFD_MTU);
-
- /* if we did not fit into CAN sized messages then stop_reading. */
- if (nbytes != CANFD_MTU && nbytes != CAN_MTU)
- {
- if (errno == ENETDOWN)
- ERROR(binder_interface, "read: %s CAN device down", device_name_);
- ERROR(binder_interface, "read: Incomplete CAN(FD) frame");
- ::memset(&cfd, 0, sizeof(cfd));
- }
-
- DEBUG(binder_interface, "read: Found id: %X, length: %X, data %02X%02X%02X%02X%02X%02X%02X%02X", cfd.can_id, cfd.len,
- cfd.data[0], cfd.data[1], cfd.data[2], cfd.data[3], cfd.data[4], cfd.data[5], cfd.data[6], cfd.data[7]);
- return std::pair<struct canfd_frame&, size_t>(cfd, nbytes);
-}
-
-/**
-* @brief start reading threads and set flag is_running_
-*
-* @param can_bus_t reference can_bus_t. it will be passed to the thread
-* to allow using can_bus_t queue.
-*/
-void can_bus_dev_t::start_reading(can_bus_t& can_bus)
-{
- DEBUG(binder_interface, "Launching reading thread");
- is_running_ = true;
- th_reading_ = std::thread(&can_bus_dev_t::can_reader, this, std::ref(can_bus));
- if(!th_reading_.joinable())
- is_running_ = false;
-}
-
-/**
-* @brief stop the reading thread setting flag is_running_ to false and
-* and wait that the thread finish its job.
-*/
-void can_bus_dev_t::stop_reading()
-{
- is_running_ = false;
-}
-
-/**
-*
-* @brief Thread function used to read the can socket.
-*
-* @param[in] can_bus_dev_t object to be used to read the can socket
-* @param[in] can_bus_t object used to fill can_message_q_ queue
-*/
-void can_bus_dev_t::can_reader(can_bus_t& can_bus)
-{
- can_message_t can_message;
-
- while(is_running_)
- {
- can_message.convert_from_canfd_frame(read());
-
- {
- std::lock_guard<std::mutex> can_message_lock(can_bus.get_can_message_mutex());
- can_bus.push_new_can_message(can_message);
- }
- can_bus.get_new_can_message_cv_().notify_one();
- }
-}
-
-/**
-* @brief Send a can message from a can_message_t object.
-*
-* @param const can_message_t& can_msg: the can message object to send
-* @param const struct afb_binding_interface* interface pointer. Used to be able to log
-* using application framework logger.
-*/
-int can_bus_dev_t::send_can_message(can_message_t& can_msg)
-{
- ssize_t nbytes;
- canfd_frame f;
-
- f = can_msg.convert_to_canfd_frame();
-
- if(can_socket_ >= 0)
- {
- nbytes = ::sendto(can_socket_, &f, sizeof(struct canfd_frame), 0,
- (struct sockaddr*)&txAddress_, sizeof(txAddress_));
- if (nbytes == -1)
- {
- ERROR(binder_interface, "send_can_message: Sending CAN frame failed.");
- return -1;
- }
- return (int)nbytes;
- }
- else
- {
- ERROR(binder_interface, "send_can_message: socket not initialized. Attempt to reopen can device socket.");
- open();
- }
- return 0;
-} \ No newline at end of file