Add gitlab issue/merge request templates
[apps/agl-service-can-low-level.git] / low-can-binding / binding / low-can-subscription.cpp
index d4ada3f..99f209b 100644 (file)
 #include "application.hpp"
 #include "canutil/write.h"
 #include "../utils/socketcan-bcm.hpp"
+#include "../can/can-encoder.hpp"
+
+#ifdef USE_FEATURE_ISOTP
+#include "../utils/socketcan-isotp.hpp"
+#endif
+
 #ifdef USE_FEATURE_J1939
 #include "../utils/socketcan-j1939/socketcan-j1939-data.hpp"
 #endif
@@ -96,12 +102,9 @@ int low_can_subscription_t::set_event()
 int low_can_subscription_t::subscribe(afb_req_t request)
 {
        if(! afb_event_is_valid(event_))
-       {
                if(set_event() < 0)
-               {
                        return -1;
-               }
-       }
+
        return afb_req_subscribe(request, event_);
 }
 
@@ -118,22 +121,45 @@ int low_can_subscription_t::unsubscribe(afb_req_t request)
        return afb_req_unsubscribe(request, event_);
 }
 
+/**
+ * @brief Getter of index of subscription
+ *
+ * @return int Index
+ */
 int low_can_subscription_t::get_index() const
 {
        return index_;
 }
 
+/**
+ * @brief Getter of signal of subscription
+ *
+ * @return const std::shared_ptr<signal_t> A shared pointer of the signal
+ */
 const std::shared_ptr<signal_t> low_can_subscription_t::get_signal() const
 {
        return signal_;
 }
 
+/**
+ * @brief Check if the signal and event are the same that the subscription
+ *
+ * @param signal the signal compared
+ * @param event_filter the event_filter compared
+ * @return true if they are equal
+ * @return false if they are not equal
+ */
 bool low_can_subscription_t::is_signal_subscription_corresponding(const std::shared_ptr<signal_t> signal, const struct event_filter_t& event_filter) const
 {
        return signal_ == signal && event_filter_ == event_filter;
 }
 
-const std::vector<std::shared_ptr<diagnostic_message_t> > low_can_subscription_t::get_diagnostic_message() const
+/**
+ * @brief Getter for diagnostic messages of subscription
+ *
+ * @return const vector_ptr_diag_msg_t Vector of pointer of diagnostic message
+ */
+const vect_ptr_diag_msg_t low_can_subscription_t::get_diagnostic_message() const
 {
        return diagnostic_message_;
 }
@@ -146,12 +172,9 @@ const std::vector<std::shared_ptr<diagnostic_message_t> > low_can_subscription_t
 const std::shared_ptr<diagnostic_message_t> low_can_subscription_t::get_diagnostic_message(uint32_t pid) const
 {
        for(const auto& diag: diagnostic_message_)
-       {
                if(diag->get_pid() == pid)
-               {
                        return diag;
-               }
-       }
+
        return nullptr;
 }
 
@@ -161,12 +184,9 @@ const std::shared_ptr<diagnostic_message_t> low_can_subscription_t::get_diagnost
 const std::shared_ptr<diagnostic_message_t> low_can_subscription_t::get_diagnostic_message(const std::string& name) const
 {
        for(const auto& diag: diagnostic_message_)
-       {
                if(diag->get_name() == name)
-               {
                        return diag;
-               }
-       }
+
        return nullptr;
 }
 
@@ -195,116 +215,241 @@ const std::string low_can_subscription_t::get_name(uint32_t pid) const
        return "";
 }
 
+/**
+ * @brief Getter of the frequency of the event_filter
+ *
+ * @return float The frequency
+ */
 float low_can_subscription_t::get_frequency() const
 {
        return event_filter_.frequency;
 }
 
+/**
+ * @brief Getter of the min of the event_filter
+ *
+ * @return float The min value filtered
+ */
 float low_can_subscription_t::get_min() const
 {
        return event_filter_.min;
 }
 
+/**
+ * @brief Getter of the max of the event_filter
+ *
+ * @return float The max value filtered
+ */
 float low_can_subscription_t::get_max() const
 {
        return event_filter_.max;
 }
 
+bool low_can_subscription_t::get_promisc() const
+{
+       return event_filter_.promisc;
+}
+
+/**
+ * @brief Getter of the rx_id of the event_filter
+ *
+ * @return canid_t The rx_id value
+ */
+canid_t low_can_subscription_t::get_rx_id() const
+{
+       return event_filter_.rx_id;
+}
+
+/**
+ * @brief Getter of the tx_id of the event_filter
+ *
+ * @return canid_t The tx_id value
+ */
+canid_t low_can_subscription_t::get_tx_id() const
+{
+       return event_filter_.tx_id;
+}
+
+/**
+ * @brief Getter of the socket of the subscription
+ *
+ * @return std::shared_ptr<utils::socketcan_t> Pointer of the socket object
+ */
 std::shared_ptr<utils::socketcan_t> low_can_subscription_t::get_socket()
 {
        return socket_;
 }
 
+std::shared_ptr<message_definition_t> low_can_subscription_t::get_message_definition()
+{
+       return message_;
+}
+
+/**
+ * @brief Setter for the frequency of the event_filter
+ *
+ * @param freq The new frequency
+ */
 void low_can_subscription_t::set_frequency(float freq)
 {
        event_filter_.frequency = freq;
 }
 
+/**
+ * @brief Setter for the min of the event_filter
+ *
+ * @param min The new min
+ */
 void low_can_subscription_t::set_min(float min)
 {
        event_filter_.min = min;
 }
 
+/**
+ * @brief Setter for the max of the event_filter
+ *
+ * @param max The new max
+ */
 void low_can_subscription_t::set_max(float max)
 {
        event_filter_.max = max;
 }
 
+void low_can_subscription_t::set_promisc(bool promisc)
+{
+       event_filter_.promisc = promisc;
+}
+
+/**
+ * @brief Setter for the rx_id of the event_filter
+ *
+ * @param rx_id The new rx_id
+ */
+void low_can_subscription_t::set_rx_id(canid_t rx_id)
+{
+       event_filter_.rx_id = rx_id;
+}
+
+/**
+ * @brief Setter for the tx_id of the event_filter
+ *
+ * @param tx_id The new tx_id
+ */
+void low_can_subscription_t::set_tx_id(canid_t tx_id)
+{
+       event_filter_.tx_id = tx_id;
+}
+
+/**
+ * @brief Setter for the index of the subscription
+ *
+ * @param index The new index
+ */
 void low_can_subscription_t::set_index(int index)
 {
        index_ = index;
 }
 
+/**
+ * @brief Setter for the signal of the subscription
+ *
+ * @param signal The new signal
+ */
+void low_can_subscription_t::set_signal(std::shared_ptr<signal_t> signal)
+{
+       signal_ = signal;
+}
+
+void low_can_subscription_t::set_message_definition(std::shared_ptr<message_definition_t> message)
+{
+       message_ = message;
+}
+
 /// @brief Based upon which object is a subscribed CAN signal or diagnostic message
 /// it will open the socket with the required CAN bus device name.
 ///
 /// @return INVALID_SOCKET on failure, else positive integer
-int low_can_subscription_t::open_socket(low_can_subscription_t &subscription, const std::string& bus_name, socket_type type)
+int low_can_subscription_t::open_socket(low_can_subscription_t &subscription, const std::string& bus_name,  uint32_t flags)
 {
        int ret = -1;
        if(! subscription.socket_)
        {
-               switch (type)
+               if(flags & CAN_PROTOCOL)
                {
-               case socket_type::BCM:
+                       subscription.socket_ = std::make_shared<utils::socketcan_bcm_t>();
+                       if( subscription.signal_ )
+                               ret = subscription.socket_->open(subscription.signal_->get_message()->get_bus_device_name());
+                       else if(! subscription.diagnostic_message_.empty())
+                               ret = subscription.socket_->open(application_t::instance().get_diagnostic_manager().get_bus_device_name());
+                       else if(! bus_name.empty())
+                               ret = subscription.socket_->open(bus_name);
+
+                       subscription.index_ = (int)subscription.socket_->socket();
+               }
+#ifdef USE_FEATURE_ISOTP
+               else if(flags & ISOTP_PROTOCOL)
                {
-                       if( subscription.signal_ != nullptr)
+                       std::shared_ptr<utils::socketcan_isotp_t> socket = std::make_shared<utils::socketcan_isotp_t>();
+                       if(subscription.signal_ )
                        {
-                                       subscription.socket_ = std::make_shared<utils::socketcan_bcm_t>();
-                                       ret = subscription.socket_->open(subscription.signal_->get_message()->get_bus_device_name());
-                       }
-                       else if (! subscription.diagnostic_message_ .empty())
-                       {
-                                       subscription.socket_ = std::make_shared<utils::socketcan_bcm_t>();
-                                       ret = subscription.socket_->open(application_t::instance().get_diagnostic_manager().get_bus_device_name());
+                               canid_t rx = NO_CAN_ID;
+                               canid_t tx = NO_CAN_ID;
+                               if(flags & ISOTP_SEND)
+                               {
+                                       rx = subscription.get_rx_id();
+                                       tx = subscription.signal_->get_message()->get_id();
+                               }
+                               else if(flags & ISOTP_RECEIVE)
+                               {
+                                       rx = subscription.signal_->get_message()->get_id();
+                                       tx = subscription.get_tx_id();
+                               }
+                               ret = socket->open(subscription.signal_->get_message()->get_bus_device_name(), rx, tx);
+                               subscription.socket_ = socket;
                        }
-                       else if ( !bus_name.empty())
+                       else if(! bus_name.empty())
                        {
-                                       subscription.socket_ = std::make_shared<utils::socketcan_bcm_t>();
-                                       ret = subscription.socket_->open(bus_name);
+                               ret = socket->open(bus_name, subscription.get_rx_id(), subscription.get_tx_id());
+                               subscription.socket_ = socket;
                        }
                        subscription.index_ = (int)subscription.socket_->socket();
-                       break;
                }
+#endif
 #ifdef USE_FEATURE_J1939
-               case socket_type::J1939_ADDR_CLAIM:
+               else if(flags & J1939_ADDR_CLAIM_PROTOCOL)
                {
                        pgn_t pgn = J1939_NO_PGN;
+                       std::shared_ptr<utils::socketcan_j1939_addressclaiming_t> socket = std::make_shared<utils::socketcan_j1939_addressclaiming_t>();
                        if(!bus_name.empty())
-                       {
-                               std::shared_ptr<utils::socketcan_j1939_addressclaiming_t> socket = std::make_shared<utils::socketcan_j1939_addressclaiming_t>();
                                ret = socket->open(bus_name, pgn);
-                               subscription.socket_ = socket;
-                       }
+                       subscription.socket_ = socket;
                        subscription.index_ = (int)subscription.socket_->socket();
-                       break;
                }
-               case socket_type::J1939:
+               else if(flags & J1939_PROTOCOL)
                {
                        pgn_t pgn = J1939_NO_PGN;
-                       if(subscription.signal_ != nullptr)
+                       std::shared_ptr<utils::socketcan_j1939_data_t> socket = std::make_shared<utils::socketcan_j1939_data_t>();
+                       if(subscription.signal_)
                        {
                                pgn = subscription.signal_->get_message()->get_id();
-                               std::shared_ptr<utils::socketcan_j1939_data_t> socket = std::make_shared<utils::socketcan_j1939_data_t>();
                                ret = socket->open(subscription.signal_->get_message()->get_bus_device_name(), pgn);
-                               subscription.socket_ = socket;
                        }
                        else if(!bus_name.empty())
                        {
-                               std::shared_ptr<utils::socketcan_j1939_data_t> socket = std::make_shared<utils::socketcan_j1939_data_t>();
                                ret = socket->open(bus_name, pgn);
-                               subscription.socket_ = socket;
                        }
+
+                       if(ret)
+                               socket->define_opt(!j1939_pgn_is_pdu1(pgn),subscription.event_filter_.promisc);
+
+                       subscription.socket_ = socket;
                        subscription.index_ = (int)subscription.socket_->socket();
-                       break;
                }
 #endif
-               default:
+               else
                {
                        AFB_ERROR("Socket format not supported");
                        return INVALID_SOCKET;
-                       break;
-               }
                }
        }
        else{
@@ -360,73 +505,96 @@ void low_can_subscription_t::add_one_bcm_frame(struct canfd_frame& cfd, struct b
 void low_can_subscription_t::remove_last_bcm_frame(struct bcm_msg& bcm_msg)
 {
        struct canfd_frame cf;
-       memset(&cf,0,sizeof(cf));
+       memset(&cf, 0, sizeof(cf));
        bcm_msg.fd_frames[bcm_msg.msg_head.nframes] = cf;
        bcm_msg.msg_head.nframes--;
 }
 
 #ifdef USE_FEATURE_J1939
+/**
+ * @brief Create a j1939 socket to read message
+ *
+ * @param subscription The subscription
+ * @param sig The signal subscribed
+ * @return int 0 if ok else -1
+ */
 int low_can_subscription_t::create_rx_filter_j1939(low_can_subscription_t &subscription, std::shared_ptr<signal_t> sig)
 {
        subscription.signal_= sig;
 
        // Make sure that socket is opened.
-       if(open_socket(subscription,"",socket_type::J1939) < 0)
-       {
+       if(open_socket(subscription, "", J1939_PROTOCOL) < 0)
                        return -1;
-       }
+
        return 0;
 }
 #endif
 
+/**
+ * @brief Create an iso tp socket to read message
+ *
+ * @param subscription The subscription
+ * @param sig The signal subscribed
+ * @return int 0 if ok else -1
+ */
+int low_can_subscription_t::create_rx_filter_isotp(low_can_subscription_t &subscription, std::shared_ptr<signal_t> sig)
+{
+       subscription.signal_= sig;
+
+       // Make sure that socket is opened.
+       if(open_socket(subscription, "", ISOTP_PROTOCOL|ISOTP_RECEIVE) < 0)
+                       return -1;
+
+       return 0;
+}
+
 /// @brief Create a RX_SETUP receive job to be used by the BCM socket for a CAN signal
 /// subscription
 ///
 /// @return 0 if ok else -1
 int low_can_subscription_t::create_rx_filter_can(low_can_subscription_t &subscription, std::shared_ptr<signal_t> sig)
 {
-       uint32_t flags;
-       float val;
+       uint32_t flags_bcm;
        struct timeval freq, timeout = {0, 0};
-       struct canfd_frame cfd;
        subscription.signal_= sig;
        bool is_fd = sig->get_message()->is_fd();
+       uint32_t max_dlen = 0;
 
-       std::vector<uint8_t> data;
        uint32_t length_msg = sig->get_message()->get_length();
+       std::vector<uint8_t> data(length_msg);
+       can_message_t cm;
 
-       if(length_msg == 0)
+       if(! length_msg)
        {
-               AFB_ERROR("Error in the length of message with id %d",sig->get_message()->get_id());
+               AFB_ERROR("Error in the length of message with id %d", sig->get_message()->get_id());
                return -1;
        }
 
-       for(int i = 0; i<length_msg;i++)
-       {
-               data.push_back(0);
-       }
-
-       encoder_t::encode_data(subscription.signal_,data,true,false,true);
-
-       can_message_t cm;
+       encoder_t::encode_data(subscription.signal_, data, true, false, true);
 
        if (is_fd)
        {
-               flags = SETTIMER|RX_NO_AUTOTIMER|CAN_FD_FRAME;
-               cfd.len = CANFD_MAX_DLEN;
-               cm = can_message_t(CANFD_MAX_DLEN,sig->get_message()->get_id(),length_msg,sig->get_message()->get_format(),false,CAN_FD_FRAME,data,0);
+               flags_bcm = SETTIMER|RX_NO_AUTOTIMER|CAN_FD_FRAME;
+               max_dlen = CANFD_MAX_DLEN;
        }
        else
        {
-               flags = SETTIMER|RX_NO_AUTOTIMER;
-               cfd.len = CAN_MAX_DLEN;
-               cm = can_message_t(CAN_MAX_DLEN,sig->get_message()->get_id(),length_msg,sig->get_message()->get_format(),false,0,data,0);
+               flags_bcm = SETTIMER|RX_NO_AUTOTIMER;
+               max_dlen = CAN_MAX_DLEN;
        }
 
+       cm = can_message_t( max_dlen,
+                           sig->get_message()->get_id(),
+                           length_msg,
+                           false,
+                           sig->get_message()->get_flags(),
+                           data,
+                           0);
+
        frequency_clock_t f = subscription.event_filter_.frequency == 0 ? subscription.signal_->get_frequency() : frequency_clock_t(subscription.event_filter_.frequency);
        freq = f.get_timeval_from_period();
 
-       struct bcm_msg bcm_msg = subscription.make_bcm_head(RX_SETUP, subscription.signal_->get_message()->get_id(), flags, timeout, freq);
+       struct bcm_msg bcm_msg = subscription.make_bcm_head(RX_SETUP, subscription.signal_->get_message()->get_id(), flags_bcm, timeout, freq);
 
        std::vector<canfd_frame> cfd_vect = cm.convert_to_canfd_frame_vector();
 
@@ -437,12 +605,7 @@ int low_can_subscription_t::create_rx_filter_can(low_can_subscription_t &subscri
        }
        else if(cfd_vect.size() == 1)
        {
-               canfd_frame cf = cfd_vect[0];
-               for(int i=0;i<cfd.len;i++)
-               {
-                       cfd.data[i] = cf.data[i];
-               }
-               subscription.add_one_bcm_frame(cfd, bcm_msg);
+               subscription.add_one_bcm_frame(cfd_vect[0], bcm_msg);
        }
        else
        {
@@ -453,20 +616,56 @@ int low_can_subscription_t::create_rx_filter_can(low_can_subscription_t &subscri
        return create_rx_filter_bcm(subscription, bcm_msg);
 }
 
+
+int low_can_subscription_t::create_rx_filter(std::shared_ptr<message_definition_t> msg)
+{
+       std::shared_ptr<signal_t> signal_message =
+               std::make_shared<signal_t>(signal_t{msg->get_name(),
+                                                   0,
+                                                   msg->get_length() * 8,
+                                                   1.00000f,
+                                                   0.00000f,
+                                                   0,
+                                                   0,
+                                                   frequency_clock_t(0.00000f),
+                                                   true,
+                                                   false,
+                                                   {},
+                                                   true,
+                                                   nullptr,
+                                                   nullptr,
+                                                   false,
+                                                   std::make_pair<bool, int>(false, 0),
+                                                   static_cast<sign_t>(0),
+                                                   -1,
+                                                   ""});
+
+       signal_message->set_parent(msg);
+       return create_rx_filter(signal_message);
+}
+
+
+/**
+ * @brief Create the good socket to read message
+ * depending on the signal
+ *
+ * @param sig The signal subscribed
+ * @return  0 if ok else -1
+ */
 int low_can_subscription_t::create_rx_filter(std::shared_ptr<signal_t> sig)
 {
-       #ifdef USE_FEATURE_J1939
-       if(sig->get_message()->is_j1939())
-       {
-               return low_can_subscription_t::create_rx_filter_j1939(*this, sig);
-       }
-       else
-       {
-       #endif
+       if(!sig->get_message()->is_isotp() && !sig->get_message()->is_j1939())
                return low_can_subscription_t::create_rx_filter_can(*this, sig);
-       #ifdef USE_FEATURE_J1939
-       }
-       #endif
+#ifdef USE_FEATURE_ISOTP
+       else if(sig->get_message()->is_isotp())
+               return low_can_subscription_t::create_rx_filter_isotp(*this, sig);
+#endif
+#ifdef USE_FEATURE_J1939
+       else if(sig->get_message()->is_j1939())
+               return low_can_subscription_t::create_rx_filter_j1939(*this, sig);
+#endif
+       AFB_ERROR("Signal can't be created (check config)");
+       return -1;
 }
 
 
@@ -479,10 +678,9 @@ int low_can_subscription_t::create_rx_filter(std::shared_ptr<diagnostic_message_
        diagnostic_message_.push_back(sig);
 
        struct timeval freq = frequency_clock_t(event_filter_.frequency).get_timeval_from_period();
-       //struct timeval timeout = frequency_clock_t(10).get_timeval_from_period();
-       struct timeval timeout = {0,0};
+       struct timeval timeout = {0, 0};
 
-       struct bcm_msg bcm_msg =  make_bcm_head(RX_SETUP, OBD2_FUNCTIONAL_BROADCAST_ID, SETTIMER|RX_NO_AUTOTIMER|RX_FILTER_ID, timeout, freq);
+       struct bcm_msg bcm_msg =  make_bcm_head(RX_SETUP, OBD2_FUNCTIONAL_BROADCAST_ID, SETTIMER | RX_NO_AUTOTIMER | RX_FILTER_ID, timeout, freq);
        return create_rx_filter_bcm(*this, bcm_msg);
 }
 
@@ -497,27 +695,25 @@ int low_can_subscription_t::create_rx_filter(std::shared_ptr<diagnostic_message_
 int low_can_subscription_t::create_rx_filter_bcm(low_can_subscription_t &subscription, struct bcm_msg& bcm_msg)
 {
        // Make sure that socket is opened.
-       if(subscription.open_socket(subscription,"",socket_type::BCM) < 0)
-               {return -1;}
-
-       // If it's not an OBD2 CAN ID then just add a simple RX_SETUP job
-       // else monitor all standard 8 CAN OBD2 ID response.
+       if(subscription.open_socket(subscription, "", CAN_PROTOCOL) < 0)
+               return -1;
 
        can_message_t msg = can_message_t();
-
        msg.set_bcm_msg(bcm_msg);
 
+       // If it's not an OBD2 CAN ID then just add a simple RX_SETUP job
+       // else monitor all standard 8 CAN OBD2 ID response.
        if(bcm_msg.msg_head.can_id != OBD2_FUNCTIONAL_BROADCAST_ID)
        {
                subscription.socket_->write_message(msg);
-                       if(! subscription.socket_)
-                               return -1;
+               if(! subscription.socket_)
+                       return -1;
        }
        else
        {
                for(uint8_t i = 0; i < 8; i++)
                {
-                       bcm_msg.msg_head.can_id  =  OBD2_FUNCTIONAL_RESPONSE_START + i;
+                       bcm_msg.msg_head.can_id = OBD2_FUNCTIONAL_RESPONSE_START + i;
                        msg.set_bcm_msg(bcm_msg);
                        subscription.socket_->write_message(msg);
                        if(! subscription.socket_)
@@ -535,41 +731,62 @@ int low_can_subscription_t::tx_send(low_can_subscription_t &subscription, messag
 {
        can_message_t *cm = static_cast<can_message_t*>(message);
 
-       struct bcm_msg bcm_msg = subscription.make_bcm_head(TX_SEND, cm->get_id(),cm->get_flags() | TX_CP_CAN_ID); // TX_CP_CAN_ID -> copy in cfd the id of bcm
+       struct bcm_msg bcm_msg = subscription.make_bcm_head(TX_SEND, cm->get_id(), cm->get_flags()|TX_CP_CAN_ID); // TX_CP_CAN_ID -> copy in cfd the id of bcm
+       cm->set_bcm_msg(bcm_msg);
+
        std::vector<canfd_frame> cfd_vect = cm->convert_to_canfd_frame_vector();
-       for(auto cfd: cfd_vect)
+
+       if(subscription.open_socket(subscription, bus_name, CAN_PROTOCOL) < 0)
+               return -1;
+
+       struct bcm_msg &bcm_cm = cm->get_bcm_msg();
+
+       if(cfd_vect.size() > 1)
        {
-               subscription.add_one_bcm_frame(cfd, bcm_msg);
+               AFB_ERROR("Multi frame BCM not implemented");
+               return -1;
        }
-
-       if(subscription.open_socket(subscription, bus_name,socket_type::BCM) < 0)
+       else if(cfd_vect.size() == 1) // raw or fd
        {
+               subscription.add_one_bcm_frame(cfd_vect[0], bcm_cm);
+
+               if(subscription.socket_->write_message(*cm) < 0)
+               {
+                       AFB_ERROR("Error write message id : %d", cfd_vect[0].can_id);
                        return -1;
+               }
        }
-
-       cm->set_bcm_msg(bcm_msg);
-       subscription.socket_->write_message(*cm);
-       if(! subscription.socket_.get())
+       else // error
        {
-                       return -1;
+               AFB_ERROR("Error no data available");
+               return -1;
        }
 
+       if(! subscription.socket_.get())
+               return -1;
+
        return 0;
 }
 
 #ifdef USE_FEATURE_J1939
+/**
+ * @brief Allows to open socket j1939 and send j1939 messsage
+ *
+ * @param subscription The subscription
+ * @param message The j1939 message to send
+ * @param bus_name The bus name where to send message
+ * @return int  0 if ok else -1
+ */
 int low_can_subscription_t::j1939_send(low_can_subscription_t &subscription, message_t *message, const std::string& bus_name)
 {
        //struct bcm_msg bcm_msg = subscription.make_bcm_head(TX_SEND, cfd.can_id);
        //subscription.add_one_bcm_frame(cfd, bcm_msg);
 
-       if(subscription.open_socket(subscription, bus_name, socket_type::J1939) < 0)
-       {
+       if(subscription.open_socket(subscription, bus_name, J1939_PROTOCOL) < 0)
                return -1;
-       }
 
        j1939_message_t *jm = static_cast<j1939_message_t*>(message);
-       jm->set_sockname(jm->get_pgn(),J1939_NO_NAME,J1939_NO_ADDR);
+       jm->set_sockname(jm->get_pgn(), J1939_NO_NAME, J1939_NO_ADDR);
        if(subscription.socket_->write_message(*jm) < 0)
        {
                AFB_ERROR("Error write j1939 message");
@@ -578,4 +795,31 @@ int low_can_subscription_t::j1939_send(low_can_subscription_t &subscription, mes
 
        return 0;
 }
-#endif
\ No newline at end of file
+#endif
+
+
+/**
+ * @brief Allows to open socket isotp and send can messsage
+ *
+ * @param subscription The subscription
+ * @param message The can message to send
+ * @param bus_name The bus name where to send message
+ * @return int  0 if ok else -1
+ */
+int low_can_subscription_t::isotp_send(low_can_subscription_t &subscription, message_t *message, const std::string& bus_name)
+{
+       //struct bcm_msg bcm_msg = subscription.make_bcm_head(TX_SEND, cfd.can_id);
+       //subscription.add_one_bcm_frame(cfd, bcm_msg);
+
+       if(subscription.open_socket(subscription, bus_name, ISOTP_PROTOCOL|ISOTP_SEND) < 0)
+               return -1;
+
+       can_message_t *cm = static_cast<can_message_t*>(message);
+       if(subscription.socket_->write_message(*cm) < 0)
+       {
+               AFB_ERROR("Error write iso tp message");
+               return -1;
+       }
+
+       return 0;
+}