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EEPROM Library

This librariry provides access to internal 360 kB non-volatile EEPROM. Data written to EEPROM is saved even if Z-Uno is not powered. Use it to store data in battery and FLiRS devices that should survive battery unplug. Data written to the EEPROM is saved even if Z-Uno is not powered. Use it to store data that should survive power unplug or sleeping modes.

put
get
read
update
write


#include "EEPROM.h"

BYTE some_data[] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee}; 
BYTE read_data[5];

void setup() {
  Serial.begin();
}

void loop() {
    byte i;
    word res;
    dword addr = 0x800;
    
    Serial.println("Reading 128 Bytes one by one from EEPROM...");
    for (i = 0; i < 128; i++) {
        Serial.print(EEPROM.read(addr + i),HEX);
        if (((i % 0x10) == 0) && (i != 0))
          Serial.println();
        else
          Serial.print(' ');
    }

    Serial.println();

    Serial.println("Reading buffer from EEPROM...");
    res = EEPROM.get(addr, &read_data, sizeof(read_data));
    Serial.print("Read ");
    Serial.print(res);
    Serial.println(" Bytes");

    // write data to a specific address
    res = EEPROM.put(addr, &some_data, sizeof(some_data));
    
    delay(5000); // don't write to much in the EEPROM not to kill it
}


#include "EEPROM.h"

BYTE some_data[] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee}; 
BYTE read_data[5];

void setup() {
  Serial.begin();
}

void loop() {
    byte i;
    word res;
    dword addr = 0x0;
    
    Serial.println("Reading 128 Bytes one by one from EEPROM...");
    for (i = 0; i < 128; i++) {
        Serial.print(EEPROM.read(addr + i),HEX);
        if (((i % 0x10) == 0) && (i != 0))
          Serial.println();
        else
          Serial.print(' ');
    }

    Serial.println();

    Serial.println("Reading buffer from EEPROM...");
    res = EEPROM.get(addr, &read_data, sizeof(read_data));
    Serial.print("Read ");
    Serial.print(res);
    Serial.println(" Bytes");

    // write data to a specific address
    res = EEPROM.put(addr, &some_data, sizeof(some_data));
    
    delay(5000); // don't write to much in the EEPROM not to kill it
}

User memory layout:

Start address	End address	Size	Description
0x0000	0x1FFF	0xE00	8 kB	3584 B	User memory
0xE00	0xE04	4 B	Settings of Notification Command Class
0xE04	0xE08	4 B	Settings of Wakeup Command Class
0x2000	0xE08	0x20FF	0xE8C	256 B	132 B	User configuration parameters
0x2100	0x3FFFF	248 kB	User memory

You can also pre-load some data in the EEPROM via USB cable. Check tools section.