79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
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/*!
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\file gd32f4xx_trng.h
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\brief definitions for the TRNG
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*/
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/*
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Copyright (C) 2016 GigaDevice
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2016-08-15, V1.0.0, firmware for GD32F4xx
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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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/* EXTI 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) /*!< interrupt enable register */
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#define TRNG_STAT REG32(TRNG + 0x04U) /*!< event enable register */
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#define TRNG_DATA REG32(TRNG + 0x08U) /*!< rising edge trigger enable 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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/* 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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/* get the trng status flags */
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FlagStatus trng_flag_get(trng_flag_enum flag);
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/* clear the trng status flags */
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void trng_flag_clear(trng_flag_enum flag);
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/* the trng interrupt enable */
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void trng_interrupt_enable(void);
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/* the trng interrupt disable */
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void trng_interrupt_disable(void);
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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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