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/**************************************************************************//**
* @file nu_trng.h
* @version V3.00
* @brief TRNG driver header file
*
* @copyright SPDX-License-Identifier: Apache-2.0
* @copyright Copyright (C) 2021 Nuvoton Technology Corp. All rights reserved.
******************************************************************************/
#ifndef __NU_TRNG_H__
#define __NU_TRNG_H__
#ifdef __cplusplus
extern "C"
{
#endif
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup TRNG_Driver TRNG Driver
@{
*/
/** @addtogroup M460_TRNG_EXPORTED_MACROS TRNG Exported Macros
@{
*/
/*----------------------------------------------------------------------------------------------*/
/* Macros */
/*----------------------------------------------------------------------------------------------*/
/**
* @brief Let TRNG engine know the currrent PCLK frequency. The CLKPSC is the peripheral
* clock frequency range for the selected value , the CLKPSC setting must be higher
* than or equal to the actual peripheral clock frequency (for correct random generation).
* @param clkpsc 0: PCLK is 80~100 MHz
* 1: PCLK is 60~80 MHz
* 2: PCLK is 50~60 MHz
* 3: PCLK is 40~50 MHz
* 4: PCLK is 30~40 MHz
* 5: PCLK is 25~30 MHz
* 6: PCLK is 20~25 MHz
* 7: PCLK is 15~20 MHz
* 8: PCLK is 12~15 MHz
* 9: PCLK is 9~12 MHz
*
* @return None
* \hideinitializer
*/
#define TRNG_SET_CLKP(clkpsc) do { TRNG->CTL = (TRNG->CTL&~TRNG_CTL_CLKP_Msk)|((clkpsc & 0xf)<<TRNG_CTL_CLKP_Pos); } while(0);
/*@}*/ /* end of group M460_TRNG_EXPORTED_MACROS */
/** @addtogroup TRNG_EXPORTED_FUNCTIONS TRNG Exported Functions
@{
*/
/*---------------------------------------------------------------------------------------------------------*/
/* Functions */
/*---------------------------------------------------------------------------------------------------------*/
int32_t TRNG_Open(void);
int32_t TRNG_GenWord(uint32_t *u32RndNum);
int32_t TRNG_GenBignum(uint8_t u8BigNum[], int32_t i32Len);
int32_t TRNG_GenBignumHex(char cBigNumHex[], int32_t i32Len);
/*@}*/ /* end of group TRNG_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group TRNG_Driver */
/*@}*/ /* end of group Standard_Driver */
#ifdef __cplusplus
}
#endif
#endif /* __NU_TRNG_H__ */
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