Index: source/sys_main.c
===================================================================
diff -u -r3323966fe741edbb36dffc78317ccf06ed93a68e -rcb47c5f896477ceae7597cb1a4191b3972e93f0d
--- source/sys_main.c	(.../sys_main.c)	(revision 3323966fe741edbb36dffc78317ccf06ed93a68e)
+++ source/sys_main.c	(.../sys_main.c)	(revision cb47c5f896477ceae7597cb1a4191b3972e93f0d)
@@ -47,20 +47,23 @@
 
 /* Include Files */
 
-#include <Controllers/AlarmLamp.h>
-#include <Controllers/Buttons.h>
 #include "sys_common.h"
 
 /* USER CODE BEGIN (1) */
 #include "system.h"
+#include "sys_dma.h"
+#include "can.h"
 #include "gio.h"
 #include "mibspi.h"
-#include "can.h"
+#include "sci.h"
 #include "rti.h"
 
 #include "Common.h"
+#include "AlarmLamp.h"
+#include "Buttons.h"
 #include "CommBuffers.h"
 #include "CPLD.h"
+#include "FPGA.h"
 #include "MsgQueues.h"
 #include "OperationModes.h"
 #include "SafetyShutdown.h"
@@ -122,6 +125,8 @@
     gioInit();      // configure GPIO pins
     mibspiInit();   // re-purposing MIBSPI5 I/O/C pins as GPIO
     canInit();      // CAN1 = CAN, re-purposing CAN2 and CAN3 Rx and Tx pins as GPIO
+    sciInit();      // SCI1 used for PC serial interface, SCI2 used for FPGA serial interface
+    dmaEnable();    // enable DMA
 }
 
 /*************************************************************************
@@ -141,6 +146,7 @@
     initAlarmLamp();
     initButtons();
     initWatchdogMgmt();
+    initFPGA();
     initCommBuffers();
     initMsgQueues();
     initSystemComm();
@@ -178,20 +184,58 @@
     _enable_IRQ();
 }
 
-/*************************************************************************
- * @brief canMessageNotification
- * The canMessageNotification function handles CAN message notifications.
- * @details
- * Inputs : none
- * Outputs : CAN message notification handled.
- * @param node : which CAN controller
- * @param messageBox : which message box triggered the message notification
- * @return none
- *************************************************************************/
-void canMessageNotification(canBASE_t *node, uint32 messageBox)
+void sciNotification(sciBASE_t *sci, uint32 flags)
 {
-    handleCANMsgInterrupt( (CAN_MESSAGE_BOX_T)messageBox );
+    static U32 fErrorCnt = 0;
+    static U32 oErrorCnt = 0;
+
+    if ( ( flags & SCI_FE_INT ) != 0 )
+    {
+        fErrorCnt++;
+    }
+    if ( ( flags & SCI_OE_INT ) != 0 )
+    {
+        oErrorCnt++;
+    }
 }
 
+void dmaGroupANotification(dmaInterrupt_t inttype, uint32 channel)
+{
+    if ( inttype == BTC )
+    {
+        switch ( channel )
+        {
+            case DMA_CH0:
+                // clear DMA receipt
+                scilinREG->CLEARINT = (uint32)((uint32)1U << 17U);  /* Rx DMA */
+                scilinREG->CLEARINT = (uint32)((uint32)1U << 18U);  /* Rx DMA All */
+                break;
 
+            case DMA_CH1:
+                // clear DMA receipt
+                sciREG->CLEARINT = (uint32)((uint32)1U << 17U);  /* Rx DMA */
+                sciREG->CLEARINT = (uint32)((uint32)1U << 18U);  /* Rx DMA All */
+                // handle received packet from PC
+                handleUARTMsgRecvPacketInterrupt();
+                break;
+
+            case DMA_CH2:
+                // clear DMA xmit
+                scilinREG->CLEARINT = (uint32)((uint32)1U << 16U);  /* Tx DMA */
+                break;
+
+            case DMA_CH3:
+                // clear DMA xmit
+                sciREG->CLEARINT = (uint32)((uint32)1U << 16U);  /* Tx DMA */
+                // send next pending packet to PC (if any)
+                handleUARTMsgXmitPacketInterrupt();
+                break;
+
+            default:
+                // TODO - ignore?
+                break;
+        }
+    }
+}
+
 /* USER CODE END */