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/******************************************************************************
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*Copyright(C)2018, Huada Semiconductor Co.,Ltd All rights reserved.
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*
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* This software is owned and published by:
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* Huada Semiconductor Co.,Ltd("HDSC").
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*
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* BY DOWNLOADING, INSTALLING OR USING THIS SOFTWARE, YOU AGREE TO BE BOUND
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* BY ALL THE TERMS AND CONDITIONS OF THIS AGREEMENT.
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*
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* This software contains source code for use with HDSC
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* components. This software is licensed by HDSC to be adapted only
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* for use in systems utilizing HDSC components. HDSC shall not be
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* responsible for misuse or illegal use of this software for devices not
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* supported herein. HDSC is providing this software "AS IS" and will
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* not be responsible for issues arising from incorrect user implementation
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* of the software.
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*
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* Disclaimer:
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* HDSC MAKES NO WARRANTY, EXPRESS OR IMPLIED, ARISING BY LAW OR OTHERWISE,
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* REGARDING THE SOFTWARE (INCLUDING ANY ACOOMPANYING WRITTEN MATERIALS),
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* ITS PERFORMANCE OR SUITABILITY FOR YOUR INTENDED USE, INCLUDING,
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* WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, THE IMPLIED
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* WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR USE, AND THE IMPLIED
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* WARRANTY OF NONINFRINGEMENT.
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* HDSC SHALL HAVE NO LIABILITY (WHETHER IN CONTRACT, WARRANTY, TORT,
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* NEGLIGENCE OR OTHERWISE) FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT
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* LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION,
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* LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS) ARISING FROM USE OR
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* INABILITY TO USE THE SOFTWARE, INCLUDING, WITHOUT LIMITATION, ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS OF DATA,
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* SAVINGS OR PROFITS,
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* EVEN IF Disclaimer HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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* YOU ASSUME ALL RESPONSIBILITIES FOR SELECTION OF THE SOFTWARE TO ACHIEVE YOUR
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* INTENDED RESULTS, AND FOR THE INSTALLATION OF, USE OF, AND RESULTS OBTAINED
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* FROM, THE SOFTWARE.
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*
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* This software may be replicated in part or whole for the licensed use,
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* with the restriction that this Disclaimer and Copyright notice must be
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* included with each copy of this software, whether used in part or whole,
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* at all times.
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*/
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/** \file rng.c
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**
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** Common API of rng.
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** @link flashGroup Some description @endlink
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**
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** - 2018-05-08
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**
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******************************************************************************/
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/*******************************************************************************
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* Include files
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******************************************************************************/
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#include "trng.h"
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/**
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*******************************************************************************
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** \addtogroup FlashGroup
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******************************************************************************/
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//@{
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/*******************************************************************************
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* Local pre-processor symbols/macros ('#define')
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******************************************************************************/
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/*******************************************************************************
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* Global variable definitions (declared in header file with 'extern')
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******************************************************************************/
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/*******************************************************************************
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* Local type definitions ('typedef')
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******************************************************************************/
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/*******************************************************************************
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* Local variable definitions ('static')
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******************************************************************************/
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/*******************************************************************************
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* Local function prototypes ('static')
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******************************************************************************/
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/*******************************************************************************
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* Function implementation - global ('extern') and local ('static')
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******************************************************************************/
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/**
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*****************************************************************************
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** \brief 随机数初始化(上电第一次生成随机数）
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**
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**
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** \retval TRUE or FALSE
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*****************************************************************************/
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en_result_t Trng_Init(void)
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{
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//==>>生成64bits随机数（上电第一次）
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M0P_TRNG->CR_f.RNGCIR_EN = 1;
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//模式配置0
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M0P_TRNG->MODE_f.LOAD = 1;
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M0P_TRNG->MODE_f.FDBK = 1;
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M0P_TRNG->MODE_f.CNT = 6;
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//生成随机数0
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M0P_TRNG->CR_f.RNG_RUN = 1;
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while(M0P_TRNG->CR_f.RNG_RUN)
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{
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;
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}
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//模式配置1
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M0P_TRNG->MODE_f.LOAD = 0;
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M0P_TRNG->MODE_f.FDBK = 0;
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M0P_TRNG->MODE_f.CNT = 4;
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//生成随机数1
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M0P_TRNG->CR_f.RNG_RUN = 1;
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while(M0P_TRNG->CR_f.RNG_RUN)
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{
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;
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}
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//关闭随机源电路，节省功耗
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M0P_TRNG->CR_f.RNGCIR_EN = 0;
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return Ok;
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}
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/**
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*****************************************************************************
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** \brief 生成随机数（非上电第一次生成随机数）
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**
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**
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** \retval TRUE or FALSE
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*****************************************************************************/
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en_result_t Trng_Generate(void)
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{
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//==>>生成64bits随机数（非上电第一次生成）
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M0P_TRNG->CR_f.RNGCIR_EN = 1;
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//模式配置0
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M0P_TRNG->MODE_f.LOAD = 0;
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M0P_TRNG->MODE_f.FDBK = 1;
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M0P_TRNG->MODE_f.CNT = 6;
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//生成随机数0
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M0P_TRNG->CR_f.RNG_RUN = 1;
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while(M0P_TRNG->CR_f.RNG_RUN)
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{
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;
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}
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//模式配置1
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M0P_TRNG->MODE_f.FDBK = 0;
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M0P_TRNG->MODE_f.CNT = 4;
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M0P_TRNG->MODE_f.CNT = 4;
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//生成随机数1
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M0P_TRNG->CR_f.RNG_RUN = 1;
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while(M0P_TRNG->CR_f.RNG_RUN)
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{
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;
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}
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//关闭随机源电路，节省功耗
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M0P_TRNG->CR_f.RNGCIR_EN = 0;
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return Ok;
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}
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/**
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*****************************************************************************
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** \brief 随机数获取
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**
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** \retval data0
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*****************************************************************************/
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uint32_t Trng_GetData0(void)
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{
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return M0P_TRNG->DATA0;
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}
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/**
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*****************************************************************************
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** \brief 随机数获取
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**
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** \retval data1
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*****************************************************************************/
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uint32_t Trng_GetData1(void)
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{
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return M0P_TRNG->DATA1;
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}
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//@} // TrngGroup
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/*******************************************************************************
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* EOF (not truncated)
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******************************************************************************/
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