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-rw-r--r--CAN-binder/low-can-binding/binding/low-can-cb.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/CAN-binder/low-can-binding/binding/low-can-cb.cpp b/CAN-binder/low-can-binding/binding/low-can-cb.cpp
index 2e3a10f..48e2241 100644
--- a/CAN-binder/low-can-binding/binding/low-can-cb.cpp
+++ b/CAN-binder/low-can-binding/binding/low-can-cb.cpp
@@ -139,6 +139,9 @@ int low_can_subscription_t::create_rx_filter(std::shared_ptr<can_signal_t> sig)
/// @return 0 if ok else -1
int low_can_subscription_t::create_rx_filter()
{
+ if (can_signal_ == nullptr)
+ {return -1;}
+
// Make sure that socket has been opened.
if(! socket_)
{
@@ -154,7 +157,7 @@ int low_can_subscription_t::create_rx_filter()
float val = (float)(1 << can_signal_->get_bit_size()) - 1;
struct timeval freq;
- frequency_clock_t f(event_filter_.frequency);
+ frequency_clock_t f = event_filter_.frequency > 0.0f ? frequency_clock_t(event_filter_.frequency) : can_signal_->get_frequency();
freq = f.get_timeval_from_period();
bcm_msg.msg_head.opcode = RX_SETUP;