619568db5b
* Converted EEPROM library to use nvs instead of partition. Removed eeprom partition from all partition table CSV files. * Changed variable names, added some comments, formatting as per me-no-dev's requests * Checks for memory on malloc * Moved include nvs.h from header to code * Reworked the extra example to make it more clear how to actually use the library and persist data
93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
/*
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ESP32 eeprom_class example with EEPROM library
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This simple example demonstrates using EEPROM library to store different data in
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ESP32 Flash memory in a multiple user-defined EEPROM partition (0x1000 or 4KB max size or less).
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Install 'ESP32 Partiton Manager' ONCE from https://github.com/francis94c/ESP32Partitions
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And generate different partitions with 'partition_name'
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Usage: EEPROMClass ANY_OBJECT_NAME("partition_name", size);
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Generated partition that would work perfectly with this example
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#Name, Type, SubType, Offset, Size, Flags
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nvs, data, nvs, 0x9000, 0x5000,
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otadata, data, ota, 0xe000, 0x2000,
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app0, app, ota_0, 0x10000, 0x140000,
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app1, app, ota_1, 0x150000, 0x140000,
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eeprom0, data, 0x99, 0x290000, 0x1000,
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eeprom1, data, 0x9a, 0x291000, 0x500,
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eeprom2, data, 0x9b, 0x292000, 0x100,
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spiffs, data, spiffs, 0x293000, 0x16d000,
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Created for arduino-esp32 on 25 Dec, 2017
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by Elochukwu Ifediora (fedy0)
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*/
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#include "EEPROM.h"
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// Instantiate eeprom objects with parameter/argument names and size same as in the partition table
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EEPROMClass NAMES("eeprom0", 0x500);
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EEPROMClass HEIGHT("eeprom1", 0x200);
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EEPROMClass AGE("eeprom2", 0x100);
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void setup() {
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// put your setup code here, to run once:
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Serial.begin(115200);
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Serial.println("Testing EEPROMClass\n");
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if (!NAMES.begin(NAMES.length())) {
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Serial.println("Failed to initialise NAMES");
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Serial.println("Restarting...");
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delay(1000);
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ESP.restart();
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}
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if (!HEIGHT.begin(HEIGHT.length())) {
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Serial.println("Failed to initialise HEIGHT");
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Serial.println("Restarting...");
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delay(1000);
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ESP.restart();
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}
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if (!AGE.begin(AGE.length())) {
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Serial.println("Failed to initialise AGE");
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Serial.println("Restarting...");
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delay(1000);
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ESP.restart();
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}
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char* name = "Teo Swee Ann";
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double height = 5.8;
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uint32_t age = 47;
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// Write: Variables ---> EEPROM partitions
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NAMES.put(0, name);
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HEIGHT.put(0, height);
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AGE.put(0, age);
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Serial.print("name: "); Serial.println(name);
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Serial.print("height: "); Serial.println(height);
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Serial.print("age: "); Serial.println(age);
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Serial.println("------------------------------------\n");
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// Clear variables
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name = '\0';
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height = 0;
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age = 0;
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Serial.print("name: "); Serial.println(name);
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Serial.print("height: "); Serial.println(height);
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Serial.print("age: "); Serial.println(age);
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Serial.println("------------------------------------\n");
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// Read: Variables <--- EEPROM partitions
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NAMES.get(0, name);
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HEIGHT.get(0, height);
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AGE.get(0, age);
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Serial.print("name: "); Serial.println(name);
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Serial.print("height: "); Serial.println(height);
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Serial.print("age: "); Serial.println(age);
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Serial.println("Done!");
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}
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void loop() {
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// put your main code here, to run repeatedly:
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}
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