Index: firmware/App/Services/FPGA.h
===================================================================
diff -u -rfc99f47309c9d96f73a2d4696b42d6d302f334a7 -rc74c1d99a011dd0fb7f98f183faecda675221fce
--- firmware/App/Services/FPGA.h	(.../FPGA.h)	(revision fc99f47309c9d96f73a2d4696b42d6d302f334a7)
+++ firmware/App/Services/FPGA.h	(.../FPGA.h)	(revision c74c1d99a011dd0fb7f98f183faecda675221fce)
@@ -1,15 +1,27 @@
-/*
- * FPGA.h
- *
- *  Created on: Aug 15, 2024
- *      Author: fw
- */
 
 #ifndef __FPGA_H__
 #define __FPGA_H__
 
 #include "BLCommon.h"
 
+/**
+ *  @defgroup FPGA FPGA
+ *  @brief FPGA service unit.
+ *  The FPGA unit manages communication between the bootloader and the FPGA via UART.
+ *  This unit is driven by the Priority Task via calls to two FPGA executive functions:
+ *     1) Writes update data to the FPGA flash
+ *     2) Reads header, update register, FIFO count as well as the flash status
+ *  This unit first reads the header record that includes the FPGA ID and revision and
+ *  verifies the FPGA ID to check FPGA communication.
+ *
+ *  @addtogroup FPGA
+ *  @{
+ */
+
+// ********** public definitions **********
+
+// ********** public function prototypes **********
+
 void initFPGA( void );
 
 void execFPGA( void );
@@ -24,4 +36,6 @@
 void signalFPGAToWriteToFlash( U08* data, U32 len );
 void signalFPGAToSelfConfigure( void );
 
+/**@}*/
+
 #endif