diff --git a/CanPorts.c b/CanPorts.c
index 81952da..64023fa 100644
--- a/CanPorts.c
+++ b/CanPorts.c
@@ -12,7 +12,7 @@ typedef struct {
     uint32_t u32CanRAM[4];
 } Can_RamType;
 
-ALIGN(256) extern Can_RamType g_aRxDataBuf[16]; // dma ring buffer size is 256
+ALIGN(256) Can_RamType g_aRxDataBuf[16]; // dma ring buffer size is 256
 
 static void DMA_TransferCompleteCallback(void) {
     CanSerialPortFrameIrqRxProcessing(CAN_PORTS.Can0_IO.env, (uint32_t *)&g_aRxDataBuf[0]);
@@ -101,4 +101,24 @@ void CanPorts_Init() {
     vCanPort_InitCan0();
     CAN_PORTS.Can0_IO = CanPortFrame_GetIo(&CAN_PORTS.Can0);
 
+}
+
+void CAN0_IRQHandler(void)
+{
+    FLEXCAN_IRQHandler(0U);
+}
+
+void CAN1_IRQHandler(void)
+{
+    FLEXCAN_IRQHandler(1U);
+}
+
+void CAN2_IRQHandler(void)
+{
+    FLEXCAN_IRQHandler(2U);
+}
+
+void CAN3_IRQHandler(void)
+{
+    FLEXCAN_IRQHandler(3U);
 }
\ No newline at end of file