55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
#ifndef Entropy_h
|
|
#define Entropy_h
|
|
|
|
#include <stdint.h>
|
|
|
|
// Separate the ARM Due headers we use
|
|
#ifdef ARDUINO_SAM_DUE
|
|
#include <sam.h>
|
|
#include <sam3xa/include/component/component_trng.h>
|
|
#endif
|
|
|
|
// Teensy required headers
|
|
#ifdef TEENSYDUINO
|
|
#include <util/atomic.h>
|
|
#endif
|
|
|
|
// Separate AVR headers from ARM headers
|
|
#ifdef __AVR__
|
|
#include <avr/interrupt.h>
|
|
#include <avr/wdt.h>
|
|
#include <util/atomic.h>
|
|
#endif
|
|
|
|
const uint32_t WDT_RETURN_BYTE=256;
|
|
const uint32_t WDT_RETURN_WORD=65536;
|
|
|
|
union ENTROPY_LONG_WORD
|
|
{
|
|
uint32_t int32;
|
|
uint16_t int16[2];
|
|
uint8_t int8[4];
|
|
};
|
|
|
|
class EntropyClass
|
|
{
|
|
public:
|
|
void initialize(void);
|
|
uint32_t random(void);
|
|
uint32_t random(uint32_t max);
|
|
uint32_t random(uint32_t min, uint32_t max);
|
|
uint8_t randomByte(void);
|
|
uint16_t randomWord(void);
|
|
float randomf(void);
|
|
float randomf(float max);
|
|
float randomf(float min, float max);
|
|
float rnorm(float mean, float stdDev);
|
|
uint8_t available(void);
|
|
private:
|
|
ENTROPY_LONG_WORD share_entropy;
|
|
uint32_t retVal;
|
|
uint8_t random8(void);
|
|
uint16_t random16(void);
|
|
};
|
|
extern EntropyClass Entropy;
|
|
#endif
|