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/*!
\file gd32f30x_crc.h
\brief definitions for the CRC
*/
/*
Copyright (C) 2017 GigaDevice
2017-02-10, V1.0.0, firmware for GD32F30x
*/
#ifndef GD32F30X_CRC_H
#define GD32F30X_CRC_H
#include "gd32f30x.h"
/* CRC definitions */
#define CRC CRC_BASE
/* registers definitions */
#define CRC_DATA REG32(CRC + 0x00U) /*!< CRC data register */
#define CRC_FDATA REG32(CRC + 0x04U) /*!< CRC free data register */
#define CRC_CTL REG32(CRC + 0x08U) /*!< CRC control register */
/* bits definitions */
/* CRC_DATA */
#define CRC_DATA_DATA BITS(0,31) /*!< CRC calculation result bits */
/* CRC_FDATA */
#define CRC_FDATA_FDATA BITS(0,7) /*!< CRC free data bits */
/* CRC_CTL */
#define CRC_CTL_RST BIT(0) /*!< CRC reset CRC_DATA register bit */
/* function declarations */
/* deinit CRC calculation unit */
void crc_deinit(void);
/* reset data register to the value of initializaiton data register */
void crc_data_register_reset(void);
/* read the data register */
uint32_t crc_data_register_read(void);
/* read the free data register */
uint8_t crc_free_data_register_read(void);
/* write the free data register */
void crc_free_data_register_write(uint8_t free_data);
/* CRC calculate a 32-bit data */
uint32_t crc_single_data_calculate(uint32_t sdata);
/* CRC calculate a 32-bit data array */
uint32_t crc_block_data_calculate(uint32_t array[], uint32_t size);
#endif /* GD32F30X_CRC_H */
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