mirror of
https://github.com/0xFEEDC0DE64/arduino-esp32.git
synced 2025-10-30 21:51:40 +01:00
3310e2e31d
* 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
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
/*
|
|
ESP32 eeprom_extra example with EEPROM library
|
|
|
|
This simple example demonstrates using other EEPROM library resources
|
|
|
|
Created for arduino-esp32 on 25 Dec, 2017
|
|
by Elochukwu Ifediora (fedy0)
|
|
*/
|
|
|
|
#include "EEPROM.h"
|
|
|
|
void setup() {
|
|
// put your setup code here, to run once:
|
|
Serial.begin(115200);
|
|
Serial.println("\nTesting EEPROM Library\n");
|
|
if (!EEPROM.begin(EEPROM.length())) {
|
|
Serial.println("Failed to initialise EEPROM");
|
|
Serial.println("Restarting...");
|
|
delay(1000);
|
|
ESP.restart();
|
|
}
|
|
|
|
int address = 0; // Same address is used through the example
|
|
|
|
EEPROM.writeByte(address, -128); // -2^7
|
|
Serial.println(EEPROM.readByte(address));
|
|
|
|
EEPROM.writeChar(address, 'A'); // Same as writyByte and readByte
|
|
Serial.println(char(EEPROM.readChar(address)));
|
|
|
|
EEPROM.writeUChar(address, 255); // 2^8 - 1
|
|
Serial.println(EEPROM.readUChar(address));
|
|
|
|
EEPROM.writeShort(address, -32768); // -2^15
|
|
Serial.println(EEPROM.readShort(address));
|
|
|
|
EEPROM.writeUShort(address, 65535); // 2^16 - 1
|
|
Serial.println(EEPROM.readUShort(address));
|
|
|
|
EEPROM.writeInt(address, -2147483648); // -2^31
|
|
Serial.println(EEPROM.readInt(address));
|
|
|
|
EEPROM.writeUInt(address, 4294967295); // 2^32 - 1
|
|
Serial.println(EEPROM.readUInt(address));
|
|
|
|
EEPROM.writeLong(address, -2147483648); // Same as writeInt and readInt
|
|
Serial.println(EEPROM.readLong(address));
|
|
|
|
EEPROM.writeULong(address, 4294967295); // Same as writeUInt and readUInt
|
|
Serial.println(EEPROM.readULong(address));
|
|
|
|
int64_t value = -9223372036854775808; // -2^63
|
|
EEPROM.writeLong64(address, value);
|
|
value = 0; // Clear value
|
|
value = EEPROM.readLong64(value);
|
|
Serial.printf("0x%08X", (uint32_t)(value >> 32)); // Print High 4 bytes in HEX
|
|
Serial.printf("%08X\n", (uint32_t)value); // Print Low 4 bytes in HEX
|
|
|
|
uint64_t Value = 18446744073709551615; // 2^64 - 1
|
|
EEPROM.writeULong64(address, Value);
|
|
Value = 0; // Clear Value
|
|
Value = EEPROM.readULong64(Value);
|
|
Serial.printf("0x%08X", (uint32_t)(Value >> 32)); // Print High 4 bytes in HEX
|
|
Serial.printf("%08X\n", (uint32_t)Value); // Print Low 4 bytes in HEX
|
|
|
|
EEPROM.writeFloat(address, 1234.1234);
|
|
Serial.println(EEPROM.readFloat(address), 4);
|
|
|
|
EEPROM.writeDouble(address, 123456789.123456789);
|
|
Serial.println(EEPROM.readDouble(address), 8);
|
|
|
|
EEPROM.writeBool(address, true);
|
|
Serial.println(EEPROM.readBool(address));
|
|
|
|
String sentence = "I love ESP32.";
|
|
EEPROM.writeString(address, sentence);
|
|
Serial.println(EEPROM.readString(address));
|
|
|
|
char gratitude[] = "Thank You Espressif!";
|
|
EEPROM.writeString(address, gratitude);
|
|
Serial.println(EEPROM.readString(address));
|
|
|
|
// See also the general purpose writeBytes() and readBytes() for BLOB in EEPROM library
|
|
// To avoid data overwrite, next address should be chosen/offset by using "address =+ sizeof(previousData)"
|
|
}
|
|
|
|
void loop() {
|
|
// put your main code here, to run repeatedly:
|
|
|
|
} |