diff --git a/include/sta/devices/stm32/can.hpp b/include/sta/devices/stm32/can.hpp
index 598b2bd..eff37a4 100644
--- a/include/sta/devices/stm32/can.hpp
+++ b/include/sta/devices/stm32/can.hpp
@@ -117,6 +117,15 @@ namespace sta
      * @ingroup sta_core_stm32_can
      */
     void CanBus_RxPendingCallback();
+
+    /**
+     * @brief Interrupt handler for pending RX frames. Secondary handler.
+     *
+     * May be implemented by application.
+     *
+     * @ingroup sta_core_stm32_can
+     */
+    void CanBus_RxPendingCallbackSecondary();
 #endif // STA_STM32_CAN_GLOBAL
 } // namespace sta
 
diff --git a/src/devices/stm32/can.cpp b/src/devices/stm32/can.cpp
index 47e9c97..ffd6a41 100644
--- a/src/devices/stm32/can.cpp
+++ b/src/devices/stm32/can.cpp
@@ -215,6 +215,10 @@ namespace sta
     STA_WEAK
     void CanBus_RxPendingCallback(uint32_t fifo)
     {}
+
+    STA_WEAK
+	void CanBus_RxPendingCallbackSecondary(uint32_t fifo)
+    {}
 } // namespace sta
 
 
@@ -226,6 +230,10 @@ extern "C"
         {
             sta::CanBus_RxPendingCallback(CAN_RX_FIFO0);
         }
+        else
+        {
+            sta::CanBus_RxPendingCallbackSecondary(CAN_RX_FIFO0);
+        }
     }
 
     void HAL_CAN_RxFifo1MsgPendingCallback(CAN_HandleTypeDef *hcan)
@@ -234,6 +242,9 @@ extern "C"
         {
             sta::CanBus_RxPendingCallback(CAN_RX_FIFO1);
         }
+        else{
+            sta::CanBus_RxPendingCallbackSecondary(CAN_RX_FIFO1);
+        }
     }
 }