forked from espressif/arduino-esp32
Add EEPROMClass and examples (#1034)
* enchanced EEPROMClass * Added eeprom examles and modified partition * added eeprom class and extra examples * No changes * No changes * added eeprom class and examples * fixed typo * length() returns user-defined sector size * updated and annotated example
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Ifediora Elochukwu C
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Me No Dev
Me No Dev
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92
libraries/EEPROM/examples/eeprom_class/eeprom_class.ino
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92
libraries/EEPROM/examples/eeprom_class/eeprom_class.ino
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/*
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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", 0x1000);
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EEPROMClass HEIGHT("eeprom1", 0x500);
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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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90
libraries/EEPROM/examples/eeprom_extra/eeprom_extra.ino
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90
libraries/EEPROM/examples/eeprom_extra/eeprom_extra.ino
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/*
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ESP32 eeprom_extra example with EEPROM library
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This simple example demonstrates using other EEPROM library resources
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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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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("\nTesting EEPROM Library\n");
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if (!EEPROM.begin(EEPROM.length())) {
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Serial.println("Failed to initialise EEPROM");
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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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int address = 0; // Same address is used through the example
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EEPROM.writeByte(address, -128); // -2^7
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Serial.println(EEPROM.readByte(address));
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EEPROM.writeChar(address, 'A'); // Same as writyByte and readByte
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Serial.println(char(EEPROM.readChar(address)));
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EEPROM.writeUChar(address, 255); // 2^8 - 1
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Serial.println(EEPROM.readUChar(address));
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EEPROM.writeShort(address, -32768); // -2^15
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Serial.println(EEPROM.readShort(address));
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EEPROM.writeUShort(address, 65535); // 2^16 - 1
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Serial.println(EEPROM.readUShort(address));
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EEPROM.writeInt(address, -2147483648); // -2^31
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Serial.println(EEPROM.readInt(address));
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EEPROM.writeUInt(address, 4294967295); // 2^32 - 1
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Serial.println(EEPROM.readUInt(address));
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EEPROM.writeLong(address, -2147483648); // Same as writeInt and readInt
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Serial.println(EEPROM.readLong(address));
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EEPROM.writeULong(address, 4294967295); // Same as writeUInt and readUInt
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Serial.println(EEPROM.readULong(address));
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int64_t value = -9223372036854775808; // -2^63
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EEPROM.writeLong64(address, value);
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value = 0; // Clear value
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value = EEPROM.readLong64(value);
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Serial.printf("0x%08X", (uint32_t)(value >> 32)); // Print High 4 bytes in HEX
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Serial.printf("%08X\n", (uint32_t)value); // Print Low 4 bytes in HEX
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uint64_t Value = 18446744073709551615; // 2^64 - 1
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EEPROM.writeULong64(address, Value);
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Value = 0; // Clear Value
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Value = EEPROM.readULong64(Value);
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Serial.printf("0x%08X", (uint32_t)(Value >> 32)); // Print High 4 bytes in HEX
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Serial.printf("%08X\n", (uint32_t)Value); // Print Low 4 bytes in HEX
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EEPROM.writeFloat(address, 1234.1234);
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Serial.println(EEPROM.readFloat(address), 4);
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EEPROM.writeDouble(address, 123456789.123456789);
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Serial.println(EEPROM.readDouble(address), 8);
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EEPROM.writeBool(address, true);
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Serial.println(EEPROM.readBool(address));
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String sentence = "I love ESP32.";
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EEPROM.writeString(address, sentence);
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Serial.println(EEPROM.readString(address));
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char gratitude[] = "Thank You Espressif!";
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EEPROM.writeString(address, gratitude);
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Serial.println(EEPROM.readString(address));
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// See also the general purpose writeBytes() and readBytes() for BLOB in EEPROM library
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// To avoid data overwrite, next address should be chosen/offset by using "address =+ sizeof(previousData)"
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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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