96 lines
3.8 KiB
C
96 lines
3.8 KiB
C
/*******************************************************************************
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* Copyright (C) 2020, Huada Semiconductor Co., Ltd. All rights reserved.
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*
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* This software component is licensed by HDSC under BSD 3-Clause license
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* (the "License"); You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*/
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/******************************************************************************/
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/** \file hc32f460_trng.h
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**
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** A detailed description is available at
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** @link TrngGroup Trng description @endlink
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**
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** - 2018-10-20 CDT First version for Device Driver Library of Trng.
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**
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******************************************************************************/
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#ifndef __HC32F460_TRNG_H__
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#define __HC32F460_TRNG_H__
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/*******************************************************************************
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* Include files
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******************************************************************************/
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#include "hc32_common.h"
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/* C binding of definitions if building with C++ compiler */
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**
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*******************************************************************************
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** \defgroup TrngGroup True Random Number Generator(TRNG)
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**
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******************************************************************************/
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//@{
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/*******************************************************************************
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* Global type definitions ('typedef')
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******************************************************************************/
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/*******************************************************************************
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* Global pre-processor symbols/macros ('#define')
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******************************************************************************/
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/* The data register loads the new initial value from the random number
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generator before the random number is generated. */
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typedef enum en_trng_load_ctrl
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{
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TrngLoadNewInitValue_Disable = 0x0, ///< Disable load new initial values.
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TrngLoadNewInitValue_Enable = 0x1, ///< Enable load new initial values.
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} en_trng_load_ctrl_t;
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/* Shift n times when capturing random noise. */
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typedef enum en_trng_shift_cnt
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{
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TrngShiftCount_32 = 0x3, ///< Shift 32 times when capturing random noise.
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TrngShiftCount_64 = 0x4, ///< Shift 64 times when capturing random noise.
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TrngShiftCount_128 = 0x5, ///< Shift 128 times when capturing random noise.
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TrngShiftCount_256 = 0x6, ///< Shift 256 times when capturing random noise.
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} en_trng_shift_cnt_t;
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/* TRNG initialization structure definition. */
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typedef struct stc_trng_init
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{
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en_trng_load_ctrl_t enLoadCtrl; ///< @ref en_trng_load_ctrl_t.
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en_trng_shift_cnt_t enShiftCount; ///< @ref en_trng_shift_cnt_t.
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} stc_trng_init_t;
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/*******************************************************************************
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* Global variable definitions ('extern')
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******************************************************************************/
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/*******************************************************************************
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* Global function prototypes (definition in C source)
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******************************************************************************/
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en_result_t TRNG_Init(const stc_trng_init_t *pstcInit);
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void TRNG_DeInit(void);
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en_result_t TRNG_Generate(uint32_t *pu32Random, uint8_t u8Length, uint32_t u32Timeout);
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void TRNG_StartIT(void);
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void TRNG_GetRandomNum(uint32_t *pu32Random, uint8_t u8Length);
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//@} // TrngGroup
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#ifdef __cplusplus
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}
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#endif
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#endif /* __HC32F460_TRNG_H__ */
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/*******************************************************************************
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* EOF (not truncated)
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******************************************************************************/
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