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+/********************************** (C) COPYRIGHT  *******************************
+ * File Name          : ch32v20x_crc.h
+ * Author             : WCH
+ * Version            : V1.0.0
+ * Date               : 2021/06/06
+ * Description        : This file contains all the functions prototypes for the
+ *                      CRC firmware library.
+*********************************************************************************
+* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
+* Attention: This software (modified or not) and binary are used for 
+* microcontroller manufactured by Nanjing Qinheng Microelectronics.
+*******************************************************************************/
+#ifndef __CH32V20x_CRC_H
+#define __CH32V20x_CRC_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "ch32v20x.h"
+
+void     CRC_ResetDR(void);
+uint32_t CRC_CalcCRC(uint32_t Data);
+uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength);
+uint32_t CRC_GetCRC(void);
+void     CRC_SetIDRegister(uint8_t IDValue);
+uint8_t  CRC_GetIDRegister(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif