57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/**************************************************************************//**
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*
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* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-3-4 CHChen First version
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* 2022-3-15 Wayne Remove SW rand function
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*
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******************************************************************************/
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#include <rtconfig.h>
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#if (defined(BSP_USING_TRNG) && defined(RT_HWCRYPTO_USING_RNG))
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#include <rtdevice.h>
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#include "NuMicro.h"
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#define NU_CRYPTO_TRNG_NAME "nu_TRNG"
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#define LOG_TAG "TRNG"
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#define DBG_ENABLE
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#define DBG_SECTION_NAME "TRNG"
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#define DBG_LEVEL DBG_INFO
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#define DBG_COLOR
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#include <rtdbg.h>
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/* Private variables ------------------------------------------------------------*/
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rt_err_t nu_trng_init(void)
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{
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if ((SYS->CSERVER & SYS_CSERVER_VERSION_Msk) == 0x0)
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{
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LOG_E("This chip does not support TRNG!");
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return -RT_ERROR;
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}
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CLK_EnableModuleClock(TRNG_MODULE);
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SYS_ResetModule(TRNG_RST);
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TRNG_Open();
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return RT_EOK;
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}
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rt_uint32_t nu_trng_rand(struct hwcrypto_rng *ctx)
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{
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uint32_t u32RNGValue;
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TRNG_GenWord(&u32RNGValue);
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return u32RNGValue;
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}
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#endif //#if (defined(BSP_USING_TRNG) && defined(RT_HWCRYPTO_USING_RNG))
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