105 lines
4.3 KiB
C
105 lines
4.3 KiB
C
/*!
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\file gd32f4xx_trng.h
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\brief definitions for the TRNG
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\version 2016-08-15, V1.0.0, firmware for GD32F4xx
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\version 2018-12-12, V2.0.0, firmware for GD32F4xx
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\version 2020-09-30, V2.1.0, firmware for GD32F4xx
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*/
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/*
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Copyright (c) 2020, GigaDevice Semiconductor Inc.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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OF SUCH DAMAGE.
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*/
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#ifndef GD32F4XX_TRNG_H
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#define GD32F4XX_TRNG_H
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#include "gd32f4xx.h"
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/* TRNG definitions */
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#define TRNG TRNG_BASE
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/* registers definitions */
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#define TRNG_CTL REG32(TRNG + 0x00U) /*!< control register */
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#define TRNG_STAT REG32(TRNG + 0x04U) /*!< status register */
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#define TRNG_DATA REG32(TRNG + 0x08U) /*!< data register */
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/* bits definitions */
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/* TRNG_CTL */
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#define TRNG_CTL_TRNGEN BIT(2) /*!< TRNG enable bit */
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#define TRNG_CTL_IE BIT(3) /*!< interrupt enable bit */
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/* TRNG_STAT */
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#define TRNG_STAT_DRDY BIT(0) /*!< random data ready status bit */
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#define TRNG_STAT_CECS BIT(1) /*!< clock error current status */
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#define TRNG_STAT_SECS BIT(2) /*!< seed error current status */
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#define TRNG_STAT_CEIF BIT(5) /*!< clock error interrupt flag */
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#define TRNG_STAT_SEIF BIT(6) /*!< seed error interrupt flag */
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/* TRNG_DATA */
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#define TRNG_DATA_TRNDATA BITS(0,31) /*!< 32-Bit Random data */
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/* constants definitions */
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/* trng status flag */
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typedef enum
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{
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TRNG_FLAG_DRDY = TRNG_STAT_DRDY, /*!< random Data ready status */
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TRNG_FLAG_CECS = TRNG_STAT_CECS, /*!< clock error current status */
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TRNG_FLAG_SECS = TRNG_STAT_SECS /*!< seed error current status */
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}trng_flag_enum;
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/* trng inerrupt flag */
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typedef enum
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{
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TRNG_INT_FLAG_CEIF = TRNG_STAT_CEIF, /*!< clock error interrupt flag */
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TRNG_INT_FLAG_SEIF = TRNG_STAT_SEIF /*!< seed error interrupt flag */
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}trng_int_flag_enum;
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/* function declarations */
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/* initialization functions */
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/* deinitialize the TRNG */
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void trng_deinit(void);
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/* enable the TRNG interface */
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void trng_enable(void);
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/* disable the TRNG interface */
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void trng_disable(void);
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/* get the true random data */
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uint32_t trng_get_true_random_data(void);
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/* flag & interrupt functions */
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/* trng interrupt enable */
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void trng_interrupt_enable(void);
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/* trng interrupt disable */
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void trng_interrupt_disable(void);
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/* get the trng status flags */
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FlagStatus trng_flag_get(trng_flag_enum flag);
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/* get the trng interrupt flags */
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FlagStatus trng_interrupt_flag_get(trng_int_flag_enum int_flag);
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/* clear the trng interrupt flags */
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void trng_interrupt_flag_clear(trng_int_flag_enum int_flag);
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#endif /* GD32F4XX_TRNG_H */
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