neorv32_trng.h

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// #################################################################################################
// # << NEORV32: neorv32_trng.h - True Random Number Generator (TRNG) HW Driver >>                 #
// # ********************************************************************************************* #
// # BSD 3-Clause License                                                                          #
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// # Copyright (c) 2024, Stephan Nolting. All rights reserved.                                     #
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// # The NEORV32 Processor - https://github.com/stnolting/neorv32              (c) Stephan Nolting #
// #################################################################################################
 
 
/**********************************************************************/
#ifndef neorv32_trng_h
#define neorv32_trng_h
 
/**********************************************************************/
typedef volatile struct __attribute__((packed,aligned(4))) {
  uint32_t CTRL;  
} neorv32_trng_t;
 
#define NEORV32_TRNG ((neorv32_trng_t*) (NEORV32_TRNG_BASE))
 
enum NEORV32_TRNG_CTRL_enum {
  TRNG_CTRL_DATA_LSB        =  0, 
  TRNG_CTRL_DATA_MSB        =  7, 
  TRNG_CTRL_FIFO_LSB        = 16, 
  TRNG_CTRL_FIFO_MSB        = 19, 
  TRNG_CTRL_FIFO_CLR        = 28, 
  TRNG_CTRL_SIM_MODE        = 29, 
  TRNG_CTRL_EN              = 30, 
  TRNG_CTRL_VALID           = 31  
};
/**********************************************************************/
int  neorv32_trng_available(void);
void neorv32_trng_enable(void);
void neorv32_trng_disable(void);
void neorv32_trng_fifo_clear(void);
int  neorv32_trng_get_fifo_depth(void);
int  neorv32_trng_get(uint8_t *data);
int  neorv32_trng_check_sim_mode(void);
#endif // neorv32_trng_h