arduino-esp32/libraries/EEPROM/examples/eeprom_class/eeprom_class.ino

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/*
ESP32 eeprom_class example with EEPROM library
This simple example demonstrates using EEPROM library to store different data in
ESP32 Flash memory in a multiple user-defined EEPROM class objects.
Created for arduino-esp32 on 25 Dec, 2017
by Elochukwu Ifediora (fedy0)
converted to nvs by lbernstone - 06/22/2019
*/
#include "EEPROM.h"
// Instantiate eeprom objects with parameter/argument names and sizes
EEPROMClass NAMES("eeprom0", 0x500);
EEPROMClass HEIGHT("eeprom1", 0x200);
EEPROMClass AGE("eeprom2", 0x100);
void setup() {
Serial.begin(115200);
Serial.println("Testing EEPROMClass\n");
if (!NAMES.begin(NAMES.length())) {
Serial.println("Failed to initialise NAMES");
Serial.println("Restarting...");
delay(1000);
ESP.restart();
}
if (!HEIGHT.begin(HEIGHT.length())) {
Serial.println("Failed to initialise HEIGHT");
Serial.println("Restarting...");
delay(1000);
ESP.restart();
}
if (!AGE.begin(AGE.length())) {
Serial.println("Failed to initialise AGE");
Serial.println("Restarting...");
delay(1000);
ESP.restart();
}
char* name = "Teo Swee Ann";
double height = 5.8;
uint32_t age = 47;
// Write: Variables ---> EEPROM stores
NAMES.put(0, name);
HEIGHT.put(0, height);
AGE.put(0, age);
Serial.print("name: "); Serial.println(name);
Serial.print("height: "); Serial.println(height);
Serial.print("age: "); Serial.println(age);
Serial.println("------------------------------------\n");
// Clear variables
name = '\0';
height = 0;
age = 0;
Serial.print("name: "); Serial.println(name);
Serial.print("height: "); Serial.println(height);
Serial.print("age: "); Serial.println(age);
Serial.println("------------------------------------\n");
// Read: Variables <--- EEPROM stores
NAMES.get(0, name);
HEIGHT.get(0, height);
AGE.get(0, age);
Serial.print("name: "); Serial.println(name);
Serial.print("height: "); Serial.println(height);
Serial.print("age: "); Serial.println(age);
Serial.println("Done!");
}
void loop() {
delay(0xFFFFFFFF);
}