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https://github.com/EFeru/hoverboard-sideboard-hack-GD.git
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85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
/*!
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\file gd32f1x0_crc.h
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\brief definitions for the CRC
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*/
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/*
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Copyright (C) 2017 GigaDevice
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2014-12-26, V1.0.0, platform GD32F1x0(x=3,5)
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2016-01-15, V2.0.0, platform GD32F1x0(x=3,5,7,9)
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2016-04-30, V3.0.0, firmware update for GD32F1x0(x=3,5,7,9)
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2017-06-19, V3.1.0, firmware update for GD32F1x0(x=3,5,7,9)
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*/
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#ifndef GD32F1X0_CRC_H
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#define GD32F1X0_CRC_H
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#include "gd32f1x0.h"
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/* CRC definitions */
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#define CRC CRC_BASE
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/* registers definitions */
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#define CRC_DATA REG32(CRC + 0x00U) /*!< CRC data register */
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#define CRC_FDATA REG32(CRC + 0x04U) /*!< CRC free data register */
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#define CRC_CTL REG32(CRC + 0x08U) /*!< CRC control register */
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#define CRC_IDATA REG32(CRC + 0x10U) /*!< CRC initialization data register */
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/* bits definitions */
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/* CRC_DATA */
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#define CRC_DATA_DATA BITS(0,31) /*!< CRC calculation result bits */
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/* CRC_FDATA */
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#define CRC_FDATA_FDATA BITS(0,7) /*!< CRC free data bits */
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/* CRC_CTL */
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#define CRC_CTL_RST BIT(0) /*!< CRC reset bit */
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#define CRC_CTL_REV_I BITS(5,6) /*!< input data reverse function bits */
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#define CRC_CTL_REV_O BIT(7) /*!< output data reverse function bit */
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/* CRC_IDATA */
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#define CRC_IDATA_IDATA BITS(0,31) /*!< CRC initialization data bits */
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/* constants definitions */
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/* input data reverse function */
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#define CTL_REV_I(regval) (BITS(5, 6) & ((regval) << 5))
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#define CRC_INPUT_DATA_NOT CTL_REV_I(0) /*!< input data not reverse */
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#define CRC_INPUT_DATA_BYTE CTL_REV_I(1) /*!< input data reversed by byte type */
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#define CRC_INPUT_DATA_HALFWORD CTL_REV_I(2) /*!< input data reversed by half-word type */
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#define CRC_INPUT_DATA_WORD CTL_REV_I(3) /*!< input data reversed by word type */
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/* function declarations */
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/* deinit CRC calculation unit */
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void crc_deinit(void);
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/* enable the reverse operation of output data */
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void crc_reverse_output_data_enable(void);
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/* disable the reverse operation of output data */
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void crc_reverse_output_data_disable(void);
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/* reset data register to the value of initializaiton data register */
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void crc_data_register_reset(void);
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/* read the data register */
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uint32_t crc_data_register_read(void);
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/* read the free data register */
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uint8_t crc_free_data_register_read(void);
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/* write the free data register */
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void crc_free_data_register_write(uint8_t free_data);
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/* write the initializaiton data register */
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void crc_init_data_register_write(uint32_t init_data);
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/* configure the CRC input data function */
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void crc_input_data_reverse_config(uint32_t data_reverse);
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/* CRC calculate a 32-bit data */
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uint32_t crc_single_data_calculate(uint32_t sdata);
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/* CRC calculate a 32-bit data array */
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uint32_t crc_block_data_calculate(uint32_t array[], uint32_t size);
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#endif /* GD32F1X0_CRC_H */
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