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