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-rw-r--r--low-can-binding/binding/low-can-subscription.cpp11
-rw-r--r--low-can-binding/binding/low-can-subscription.hpp1
2 files changed, 12 insertions, 0 deletions
diff --git a/low-can-binding/binding/low-can-subscription.cpp b/low-can-binding/binding/low-can-subscription.cpp
index a1187edd..bec3ad63 100644
--- a/low-can-binding/binding/low-can-subscription.cpp
+++ b/low-can-binding/binding/low-can-subscription.cpp
@@ -353,6 +353,17 @@ void low_can_subscription_t::add_one_bcm_frame(struct canfd_frame& cfd, struct b
bcm_msg.msg_head.nframes++;
}
+/// @brief Take an existing bcm_msg struct and add a can_frame.
+/// Currently only 1 uniq can_frame can be added, it's not possible to build
+/// a multiplexed message with several can_frame.
+void low_can_subscription_t::remove_last_bcm_frame(struct bcm_msg& bcm_msg)
+{
+ struct canfd_frame 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
int low_can_subscription_t::create_rx_filter_j1939(low_can_subscription_t &subscription, std::shared_ptr<signal_t> sig)
{
diff --git a/low-can-binding/binding/low-can-subscription.hpp b/low-can-binding/binding/low-can-subscription.hpp
index d0462ecb..b5d4f7aa 100644
--- a/low-can-binding/binding/low-can-subscription.hpp
+++ b/low-can-binding/binding/low-can-subscription.hpp
@@ -93,6 +93,7 @@ public:
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);
+ static void remove_last_bcm_frame(struct bcm_msg& bcm_msg);
static int open_socket(low_can_subscription_t &subscription, const std::string& bus_name = "", socket_type type = socket_type::INVALID);