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Ps.cpp
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Ps.cpp
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/*
* MIT License
*
* Copyright (c) 2020 maciejkwasek
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <Arduino.h>
#include <stdint.h>
#include <EEPROM.h>
#include "Ps.h"
/*------------------------------------------------------------------------------------------
* PUBLIC FUNCTIONS
*------------------------------------------------------------------------------------------*/
/*
*
*
*/
bool Ps_Load(uint16_t addr, uint8_t* buf, uint16_t len)
{
bool result = false;
uint8_t cs = 0;
for(int i=0; i<len; i++)
{
buf[i] = EEPROM.read(addr++);
cs += buf[i];
}
cs = ~cs;
cs++;
uint8_t csFromPs = EEPROM.read(addr);
if(cs == csFromPs)
{
result = true;
}
return result;
}
/*
*
*
*/
void Ps_Save(uint16_t addr, const uint8_t* buf, uint16_t len)
{
uint32_t cs = 0;
for(int i=0; i<len; i++)
{
EEPROM.write(addr++, buf[i]);
cs += buf[i];
}
cs = ~cs;
cs++;
EEPROM.write(addr, cs);
}
/*
*
*
*/
void Ps_Clear(void)
{
for(int i=0; i<1024; i++)
{
EEPROM.write(i, 0xff);
}
}
/*
*
*
*/
uint8_t Ps_GetByte(uint16_t addr)
{
return EEPROM.read(addr);
}