Fix EEPROM example 2

Author: Wenn0101

libraries/EEPROM/examples/Example2_Structures/Example2_Structures.ino

@@ -5,8 +5,6 @@
 
 #include "EEPROM.h"
 
-#define SERIAL Serial
-
 #define EEPROM_PREFS_IDX  (0)
 #define EEPROM_VALID_CODE (0xAB)
 #define DEFAULT_VER_MAJOR (0)
@@ -23,44 +21,46 @@ typedef struct {
 preferences_t prefs;
 
 void setup() {
-  SERIAL.begin(115200);
-  SERIAL.println("EEPROM Example2_Structures");
+  Serial.begin(115200);
+  Serial.println("EEPROM Example2_Structures");
+  EEPROM.init();
 
   // use EEPROM.get(int index, T type) to retrieve
   // an arbitrary type from flash memory
+  prefs.valid = 0x00;
   EEPROM.get(EEPROM_PREFS_IDX, prefs);
 
   if(prefs.valid != EEPROM_VALID_CODE){
-    SERIAL.println("EEPROM was invalid");
+    Serial.println("EEPROM was invalid");
 
     // use EEPROM to store the default structure
     preferences_t default_prefs;
-    EEPROM.put(EEPROM_VALID_IDX, default_prefs);
+    EEPROM.put(EEPROM_PREFS_IDX, default_prefs);
 
-    SERIAL.println("EEPROM initialized");
+    Serial.println("EEPROM initialized");
   }
 
   // verify that the prefs are valid
   EEPROM.get(EEPROM_PREFS_IDX, prefs);
   if(prefs.valid != EEPROM_VALID_CODE){
-    SERIAL.println("ERROR");
+    Serial.println("ERROR");
     while(1){};
   }
 
-  SERIAL.println("EEPROM is valid");
+  Serial.println("EEPROM is valid");
 
-  SERIAL.printf("version: %d.%d.%d\n", refs.major, prefs.minor, prefs.patch);
+  Serial.printf("version: %d.%d.%d\n", prefs.ver_major, prefs.ver_minor, prefs.ver_patch);
 
-  SERIAL.printf("\nany characters received over SERIAL will increment the patch version and be stored after power-down\n");
+  Serial.printf("\nany characters received over SERIAL will increment the patch version and be stored after power-down\n");
 }
 
 void loop() {
-  if(SERRIAL.available()){
-    while(SERIAL.available()){
-      SERIAL.read();
-      prefs.patch++;
+  if(Serial.available()){
+    while(Serial.available()){
+      Serial.read();
+      prefs.ver_patch++;
     }
     EEPROM.put(EEPROM_PREFS_IDX, prefs);
-    SERIAL.printf("version: %d.%d.%d\n", refs.major, prefs.minor, prefs.patch);
+    Serial.printf("version: %d.%d.%d\n", prefs.ver_major, prefs.ver_minor, prefs.ver_patch);
   }
 }