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FlashStoreAndRetrieve.ino
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FlashStoreAndRetrieve.ino
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/******************************************************************************************************************************************
FlashStoreAndRetrieve.ino
For STM32F1 using Flash emulated-EEPROM
The FlashStorage_STM32F1 library aims to provide a convenient way to store and retrieve user's data using the non-volatile flash memory
of STM32F1. It now supports writing and reading the whole object, not just byte-and-byte.
Based on and modified from Cristian Maglie's FlashStorage (https://github.com/cmaglie/FlashStorage)
Built by Khoi Hoang https://github.com/khoih-prog/FlashStorage_STM32F1
Licensed under LGPLv3 license
Orginally written by A. Christian
Copyright (c) 2015-2016 Arduino LLC. All right reserved.
Copyright (c) 2021 Khoi Hoang.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License
as published bythe 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 library.
If not, see (https://www.gnu.org/licenses/)
******************************************************************************************************************************************/
// Use 0-2. Larger for more debugging messages
#define FLASH_DEBUG 2
// You can select another sector. Be careful not larger than (REGISTERED_NUMBER_FLASH_SECTORS - 1) and large enough not to overwrite your program
// Default is (REGISTERED_NUMBER_FLASH_SECTORS - 1) if you don't specify here
#define USING_FLASH_SECTOR_NUMBER (REGISTERED_NUMBER_FLASH_SECTORS - 2)
// To be included only in main(), .ino with setup() to avoid `Multiple Definitions` Linker Error
#include "FlashStorage_STM32F1.h"
// Note: the area of flash memory reserved for the variable is
// lost every time the sketch is uploaded on the board.
void setup()
{
Serial.begin(115200);
while (!Serial);
delay(200);
Serial.print(F("\nStart FlashStoreAndRetrieve on "));
Serial.println(BOARD_NAME);
Serial.println(FLASH_STORAGE_STM32F1_VERSION);
Serial.print("EEPROM length: ");
Serial.println(EEPROM.length());
EEPROM.init();
uint16_t address = 0;
int number;
// Read the content of emulated-EEPROM
EEPROM.get(address, number);
// Print the current number on the serial monitor
Serial.print("Number = 0x");
Serial.println(number, HEX);
// Save into emulated-EEPROM the number increased by 1 for the next run of the sketch
EEPROM.put(address, (int) (number + 1));
if (!EEPROM.getCommitASAP())
{
Serial.println("CommitASAP not set. Need commit()");
EEPROM.commit();
}
Serial.println("Done writing to emulated EEPROM. You can reset now");
}
void loop()
{
// Do nothing...
}