low_can_subscription: Add msg_def and create_rx for message

This commit adds message_definition variable to subscribe to
message and not signals. And the function that init rx_filter
for message.

Also patch the error message

Change-Id: I98b0b4dc8fec6ccef6e103fcb8aae136f708aa16
Signed-off-by: Arthur Guyader <arthur.guyader@iot.bzh>
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

2 files changed, 43 insertions, 1 deletions

diff --git a/low-can-binding/binding/low-can-subscription.cpp b/low-can-binding/binding/low-can-subscription.cpp
index 6cfcb718..99f209be 100644
--- a/low-can-binding/binding/low-can-subscription.cpp
+++ b/low-can-binding/binding/low-can-subscription.cpp
@@ -280,6 +280,11 @@ 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
  *
@@ -355,6 +360,10 @@ 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.
@@ -607,6 +616,35 @@ 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
@@ -626,7 +664,7 @@ int low_can_subscription_t::create_rx_filter(std::shared_ptr<signal_t> sig)
 	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 j1939 and isotp");
+	AFB_ERROR("Signal can't be created (check config)");
 	return -1;
 }
 
diff --git a/low-can-binding/binding/low-can-subscription.hpp b/low-can-binding/binding/low-can-subscription.hpp
index 972b6d61..df978861 100644
--- a/low-can-binding/binding/low-can-subscription.hpp
+++ b/low-can-binding/binding/low-can-subscription.hpp
@@ -56,6 +56,7 @@ private:
 	afb_event_t event_; ///< event_ - application framework event used to push on client
 
 	/// Signal part
+	std::shared_ptr<message_definition_t> message_;
 	std::shared_ptr<signal_t> signal_; ///< signal_ - the CAN signal subscribed
 	vect_ptr_diag_msg_t diagnostic_message_; ///< diagnostic_message_ - diagnostic messages meant to receive OBD2
 										 /// responses. Normal diagnostic request and response are not tested for now.
@@ -92,6 +93,7 @@ public:
 	canid_t get_rx_id() const;
 	canid_t get_tx_id() const;
 	std::shared_ptr<utils::socketcan_t> get_socket();
+	std::shared_ptr<message_definition_t> get_message_definition();
 
 	void set_frequency(float freq);
 	void set_min(float min);
@@ -101,6 +103,7 @@ public:
 	void set_rx_id(canid_t rx_id);
 	void set_tx_id(canid_t tx_id);
 	void set_signal(std::shared_ptr<signal_t> signal);
+	void set_message_definition(std::shared_ptr<message_definition_t> message);
 
 	static struct bcm_msg make_bcm_head(uint32_t opcode, uint32_t can_id = 0, uint32_t flags = 0, const struct timeval& timeout = {0, 0}, const struct timeval& frequency_thinning = {0, 0});
 	static void add_one_bcm_frame(struct canfd_frame& cfd, struct bcm_msg& bcm_msg);
@@ -109,6 +112,7 @@ public:
 	static int open_socket(low_can_subscription_t &subscription, const std::string& bus_name = "", uint32_t flags = INVALID_FLAG);
 
 	int create_rx_filter(std::shared_ptr<signal_t> sig);
+	int create_rx_filter(std::shared_ptr<message_definition_t> msg);
 	int create_rx_filter(std::shared_ptr<diagnostic_message_t> sig);
 	static int create_rx_filter_can(low_can_subscription_t &subscription, std::shared_ptr<signal_t> sig);
 	static int create_rx_filter_j1939(low_can_subscription_t &subscription, std::shared_ptr<signal_t> sig);