add eeprom library explicitly

digistump-avr/libraries/EEPROM/examples/eeprom_put/eeprom_put.ino

@@ -0,0 +1,56 @@
+/***
+    eeprom_put example.
+    
+    This shows how to use the EEPROM.put() method.
+    Also, this sketch will pre-set the EEPROM data for the 
+    example sketch eeprom_get.
+    
+    Note, unlike the single byte version EEPROM.write(),
+    the put method will use update semantics. As in a byte
+    will only be written to the EEPROM if the data is actually
+    different.
+
+    Written by Christopher Andrews 2015
+    Released under MIT licence.    
+***/
+
+#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 also. **/
+  
+  //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.print( "Written custom data type! \n\nView the example sketch eeprom_get to see how you can retrieve the values!" );
+}
+
+void loop(){ /* Empty loop */ }