Stepan Snigirev / Mbed 2 deprecated workshop_completed

Airgapped hardware wallet based on STM32F469-Discovery board using SD card to pass transaction data

Dependencies:   mbed QSPI_DISCO_F469NI BSP_DISCO_F469NI

helpers.h

Committer:
stepansnigirev
Date:
2019-07-30
Revision:
4:73e20d662d73
Parent:
0:f43431023689

File content as of revision 4:73e20d662d73:

#ifndef __HELPER_H__
#define __HELPER_H__

#include "mbed.h"
#include "sdcard.h"
#include "gui.h"
#include <string>
#include <sstream>
// to use string class without std::
using namespace std;

extern GUI gui;

void init();

/*********** random number generator ***********/

// initializes TRNG
int initRNG();

// generates a single random number
uint32_t getRandomNumber(void);

// fills the buffer with random data
size_t getRandomBuffer(uint8_t * arr, size_t len);

/*************** mnemonic stuff ***************/

// loads mnemonic from the internal storage
string loadMnemonic();

// saves mnemonic to the internal storage
int saveMnemonic(string mnemonic);

// wipes the device (deletes mnemonic from the memory)
int wipe();

#endif