“EEPROM:put()”的版本间的差异

put()

描述

Write any data type or object to the EEPROM.

语法

EEPROM.put(address, data)

参数

address: the location to write to, starting from 0 (int)

data: the data to write, can be a primitive type (eg. float) or a custom struct

返回值

A reference to the data passed in

注意

This function uses EEPROM.update() to perform the write, so does not rewrites the value if it didn't change.

示例

#include <EEPROM.h>

struct MyObject{
  float field1;
  byte field2;
  char name[10];
};

void setup(){

  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }

  float f = 123.456f;  //Variable to store in EEPROM.
  int eeAddress = 0;   //Location we want the data to be put.

  //One simple call, with the address first and the object second.
  EEPROM.put( eeAddress, f );

  Serial.println("Written float data type!");

  /// put() is designed for use with custom structures too.
  //Data to store.
  MyObject customVar = {
    3.14f,
    65,
    "Working!"
  };

  eeAddress += sizeof(float); //Move address to the next byte after float 'f'.

  EEPROM.put( eeAddress, customVar );
  Serial.println( "Written custom data type!") 
  Serial.println( "View the example sketch eeprom_get to see how you can retrieve the values!" );
}

void loop(){ /* Empty loop */ }