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diff --git a/FreeRTOS-Labs/Source/FreeRTOS-Plus-FAT/include/ff_crc.h b/FreeRTOS-Labs/Source/FreeRTOS-Plus-FAT/include/ff_crc.h
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+/*
+ * FreeRTOS+FAT build 191128 - Note:  FreeRTOS+FAT is still in the lab!
+ * Copyright (C) 2018 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ * Authors include James Walmsley, Hein Tibosch and Richard Barry
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * https://www.FreeRTOS.org
+ *
+ */
+
+/**
+ *	@file		ff_crc.h
+ *	@ingroup	CRC
+ *
+ **/
+
+#ifndef _FF_CRC_H_
+
+#define _FF_CRC_H_
+
+uint8_t					FF_GetCRC8( uint8_t *pbyData, uint32_t stLength );
+uint16_t				FF_GetCRC16( uint8_t *pbyData, uint32_t stLength );
+uint32_t				FF_GetCRC32( uint8_t *pbyData, uint32_t stLength );
+extern const uint32_t	crc32_table[256];
+
+#endif