File content as of revision 0:6f26c31d8573:

/*
 * (C) Copyright 2015 Valentin Ivanov. All rights reserved.
 *
 * This file is part of the RetroPlatform Library
 *
 * The RetroPlatform Library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 * This library is inspired by Gamebuino Library (http://gamebuino.com)
 * from Aurélien Rodot. 
 */
#include "mbed.h"
#include "Utils.h"

uint8_t constrain(uint8_t val, uint8_t minimum, uint8_t maximum )
{
    if( val < minimum )
        return minimum;
    if( val > maximum )
        return maximum;

    return val;
}

uint8_t max(uint8_t val1, uint8_t val2 )
{
    if( val1 < val2 )
        return val2;
    
    return val1;
}

uint8_t min(uint8_t val1, uint8_t val2 )
{
    if( val1 < val2 )
        return val1;

    return val2;
}

#define     IAP_LOCATION    0x1fff1ff1
typedef     void (*IAP_call)(unsigned int [], unsigned int []);

IAP_call        iap_entry = reinterpret_cast<IAP_call>(IAP_LOCATION);
unsigned int    IAP_command[ 5 ];
unsigned int    IAP_result[ 5 ];

int write_eeprom( char *source_addr, char *target_addr, int size )
{
    IAP_command[ 0 ]    = 61;
    IAP_command[ 1 ]    = (unsigned int)target_addr;    //  Destination EEPROM address where data bytes are to be written. This address should be a 256 byte boundary.
    IAP_command[ 2 ]    = (unsigned int)source_addr;    //  Source RAM address from which data bytes are to be read. This address should be a word boundary.
    IAP_command[ 3 ]    = size;                         //  Number of bytes to be written. Should be 256 | 512 | 1024 | 4096.
    IAP_command[ 4 ]    = SystemCoreClock / 1000;                     //  CPU Clock Frequency (CCLK) in kHz.

    iap_entry( IAP_command, IAP_result );

    return ( (int)IAP_result[ 0 ] );
}

int read_eeprom( char *source_addr, char *target_addr, int size )
{
    IAP_command[ 0 ]    = 62;
    IAP_command[ 1 ]    = (unsigned int)source_addr;    //  Source EEPROM address from which data bytes are to be read. This address should be a word boundary.
    IAP_command[ 2 ]    = (unsigned int)target_addr;    //  Destination RAM address where data bytes are to be written. This address should be a 256 byte boundary.
    IAP_command[ 3 ]    = size;                         //  Number of bytes to be written. Should be 256 | 512 | 1024 | 4096.
    IAP_command[ 4 ]    = SystemCoreClock / 1000;                     //  CPU Clock Frequency (CCLK) in kHz.

    iap_entry( IAP_command, IAP_result );

    return ( (int)IAP_result[ 0 ] );
}