diff --git a/GpsTracker/Config.cpp b/GpsTracker/Config.cpp
index 9b7327c..5528be7 100644
--- a/GpsTracker/Config.cpp
+++ b/GpsTracker/Config.cpp
@@ -7,22 +7,36 @@
 namespace config {
 	Config value;
 
-	void format() {
-		VERBOSE("format");
-		hardware::i2c::eepromPowerOn();
-		for (int i = 0; i < 1024; i++)
-		{
-			hardware::i2c::eeprom.write(i, 0);
+	namespace details {
+
+		void read() {
+			VERBOSE("read");
+			hardware::i2c::eepromPowerOn();
+			hardware::i2c::eeprom.readBlock(CONFIG_ADDR, value);
+			if (!String(CONFIG_SEED).equals(value.seed)) reset();
+			hardware::i2c::eepromPowerOff();
+
+		}
+
+		void write() {
+			VERBOSE_FORMAT("write", "%s, %s, %d, %d", value.seed, value.version, value.firstEntry, value.lastEntry);
+
+			hardware::i2c::eepromPowerOn();
+			int written = hardware::i2c::eeprom.writeBlock(CONFIG_ADDR, value);
+			hardware::i2c::eepromPowerOff();
 		}
-		hardware::i2c::eepromPowerOff();
 	}
 
-	void write() {
-		VERBOSE_FORMAT("write", "%s, %s, %d, %d", value.seed, value.version, value.firstEntry, value.lastEntry);
+	Config get() {
+		if (value.seed[0] == '\0') details::read();
 
-		hardware::i2c::eepromPowerOn();
-		int written = hardware::i2c::eeprom.writeBlock(CONFIG_ADDR, value);
-		hardware::i2c::eepromPowerOff();
+		VERBOSE_FORMAT("get", "%s, %s, %d, %d", value.seed, value.version, value.firstEntry, value.lastEntry);
+		return value;
+	}
+
+	void set(Config config) {
+		value = config;
+		details::write();
 	}
 
 	void reset() {
@@ -35,19 +49,10 @@ namespace config {
 		};
 
 		value = config;
-		//format();
-		write();
+		details::write();
 
 		VERBOSE_FORMAT("reset", "value : %s, %s, %d, %d", value.seed, value.version, value.firstEntry, value.lastEntry);
 	}
 
-	void read() {
-		hardware::i2c::eepromPowerOn();
-		hardware::i2c::eeprom.readBlock(CONFIG_ADDR, value);
-		if (!String(CONFIG_SEED).equals(value.seed)) reset();
-		hardware::i2c::eepromPowerOff();
-
-		VERBOSE_FORMAT("read", "%s, %s, %d, %d", value.seed, value.version, value.firstEntry, value.lastEntry);
-
-	}	
+	
 }
\ No newline at end of file
diff --git a/GpsTracker/Config.h b/GpsTracker/Config.h
index 9e438fa..3d44f49 100644
--- a/GpsTracker/Config.h
+++ b/GpsTracker/Config.h
@@ -25,8 +25,6 @@ struct Config {
 
 namespace config {
 
-	extern Config value;
-
 	static const sleepTimings_t defaultSleepTimings[] PROGMEM = {
 		{ 5, SLEEP_DEFAULT_TIME_SECONDS },
 		{ 10, 1200 },
@@ -38,8 +36,9 @@ namespace config {
 		{ 180, 180 },
 	};
 
-	void read();
+	Config get();
+	void set(Config config);
+
 	void reset();
-	void write();
 
 }
\ No newline at end of file
diff --git a/GpsTracker/Debug.cpp b/GpsTracker/Debug.cpp
index dee568a..4b3fe41 100644
--- a/GpsTracker/Debug.cpp
+++ b/GpsTracker/Debug.cpp
@@ -168,7 +168,7 @@ namespace debug {
 	}
 
 	void getAndDisplayEepromConfig() {
-		config::read();
+		config::get();
 	}
 
 	void getAndDisplayEepromContent() {
@@ -183,21 +183,23 @@ namespace debug {
 		}
 		Serial.println();
 		hardware::i2c::eepromPowerOff();
-		Log.notice("Done\n");
+		Log.notice(F("Done\n"));
 	}
 
 	void getAndDisplayEepromPositions() {
-		uint16_t currentEntryIndex = config::value.firstEntry;
+		uint16_t currentEntryIndex = config::get().firstEntry;
 		PositionEntry currentEntry;
 
+		hardware::i2c::eepromPowerOn();
 		do {
 			if (!positions::get(currentEntryIndex, currentEntry)) break;
 			details::displayPosition(currentEntry);
 		} while (positions::moveNext(currentEntryIndex));
+		hardware::i2c::eepromPowerOff();
 	}
 
 	void getAndDisplayEepromLastPosition() {
-		uint16_t lastEntryIndex = config::value.lastEntry;
+		uint16_t lastEntryIndex = config::get().lastEntry;
 		PositionEntry lastEntry;
 
 		positions::get(lastEntryIndex, lastEntry);
diff --git a/GpsTracker/GpsTracker.ino b/GpsTracker/GpsTracker.ino
index 6cb2bf3..bc58e67 100644
--- a/GpsTracker/GpsTracker.ino
+++ b/GpsTracker/GpsTracker.ino
@@ -10,8 +10,6 @@ void setup() {
 	if(Serial) Log.begin(LOG_LEVEL_NOTICE, &Serial);
 #endif
  
-	config::read();
-
 	rtc::setup();
 	hardware::sim808::setup();
 }
diff --git a/GpsTracker/Positions.cpp b/GpsTracker/Positions.cpp
index 4f7cc6c..78e5412 100644
--- a/GpsTracker/Positions.cpp
+++ b/GpsTracker/Positions.cpp
@@ -23,32 +23,24 @@ namespace positions {
 	void appendLast(const SIM808ChargingStatus battery, const SIM808_GPS_STATUS gpsStatus) {
 		VERBOSE("appendLast");
 
-		uint16_t lastEntryIndex;
-		uint16_t firstEntryIndex;
 		uint16_t entryAddress;
 		PositionEntry entry = { battery, gpsStatus };
 		strlcpy(entry.position, gps::lastPosition, POSITION_SIZE);
 
 		storage::powerOn();
-		config::read();
+		Config config = config::get();
 		
-		firstEntryIndex = config::value.firstEntry;
-		lastEntryIndex = config::value.lastEntry;
+		config.lastEntry++;
+		if (config.lastEntry > _maxEntryIndex) config.lastEntry = 0;
+		if (config.lastEntry == config.firstEntry) config.firstEntry++;
+		if (config.firstEntry > _maxEntryIndex) config.firstEntry = 0;
 
-		lastEntryIndex++;
-		if (lastEntryIndex > _maxEntryIndex) lastEntryIndex = 0;
-		if (lastEntryIndex == firstEntryIndex) firstEntryIndex++;
-		if (firstEntryIndex > _maxEntryIndex) firstEntryIndex = 0;
-
-		entryAddress = getEntryAddress(lastEntryIndex);
+		entryAddress = getEntryAddress(config.lastEntry);
 		hardware::i2c::eeprom.writeBlock(entryAddress, entry);
 		
 		VERBOSE_FORMAT("appendLast", "Written to EEPROM @ %X : [%d%% @ %dmV] [%d, %s]", entryAddress, battery.level, battery.voltage, gpsStatus, entry.position);
 			
-		config::value.firstEntry = firstEntryIndex;
-		config::value.lastEntry = lastEntryIndex;
-		config::write();
-
+		config::set(config);
 		storage::powerOff();
 	}
 
@@ -67,8 +59,7 @@ namespace positions {
 	}
 
 	bool moveNext(uint16_t &index) {
-		config::read();
-		if (index == config::value.lastEntry) return false;
+		if (index == config::get().lastEntry) return false;
 		
 		if (index == _maxEntryIndex) index = 0; //could use a modulo but easier to understand that way
 		else index++;