Arduino module wemos mini esp8266 eeprom

 ESP8266, we can use the EEPROM.h library, very similar to the one for Arduino with some differences. Before using the function, we have to initialize the size of the memory with begin() and the update function does not exist but the write function does something similar.

begin() to initialize the memory size

put() to write

get() to read

commit() to validate changes

Other functions of the library can be used depending on the use you have of the EEPROM.

//Libraries

#include <EEPROM.h>//https://github.com/esp8266/Arduino/blob/master/libraries/EEPROM/EEPROM.h

//Constants

#define EEPROM_SIZE 12

void setup() {

  //Init Serial USB

  Serial.begin(115200);

  Serial.println(F("Initialize System"));

  //Init EEPROM

  EEPROM.begin(EEPROM_SIZE);

  //Write data into eeprom

  int address = 0;

  int boardId = 18;

  EEPROM.put(address, boardId);

  address += sizeof(boardId); //update address value

  float param = 26.5;

  EEPROM.put(address, param);

  EEPROM.commit();

  //Read data from eeprom

  address = 0;

  int readId;

  EEPROM.get(address, readId);

  Serial.print("Read Id = ");

  Serial.println(readId);

  address += sizeof(readId); //update address value

  float readParam;

  EEPROM.get(address, readParam); //readParam=EEPROM.readFloat(address);

  Serial.print("Read param = ");

  Serial.println(readParam);

  EEPROM.end();

}

void loop() {}

Result