Добавлена библиотека eeprom

libraries/EEPROM/examples/eeprom_update/eeprom_update.ino

@@ -0,0 +1,50 @@
+/***
+   EEPROM Update method
+
+   Stores values read from analog input 0 into the EEPROM.
+   These values will stay in the EEPROM when the board is
+   turned off and may be retrieved later by another sketch.
+
+   If a value has not changed in the EEPROM, it is not overwritten
+   which would reduce the life span of the EEPROM unnecessarily.
+ ***/
+
+#include <EEPROM.h>
+
+/** the current address in the EEPROM (i.e. which byte we're going to write to next) **/
+int address = 0;
+
+void setup() {
+  EEPROM.begin();
+}
+
+void loop() {
+  /***
+    need to divide by 4 because analog inputs range from
+    0 to 1023 and each byte of the EEPROM can only hold a
+    value from 0 to 255.
+  ***/
+  int val = analogRead(0) / 16;
+
+  /***
+    Update the particular EEPROM cell.
+    these values will remain there when the board is
+    turned off.
+  ***/
+  EEPROM.update(address, val);
+
+  /***
+    The function EEPROM.update(address, val) is equivalent to the following:
+
+    if( EEPROM.read(address) != val ){
+      EEPROM.write(address, val);
+    }
+  ***/
+
+  address = address + 1;
+  if (address == EEPROM.length()) {
+    address = 0;
+  }
+
+  delay(100);
+}