save settings only after confirm

code/main.c

@@ -198,6 +198,10 @@ int main(void){
 ISR(PCINT0_vect){
     if(!(PINB & (1<<6))){
 	menu_state=(menu_state+1)%4;
+
+	if(!menu_state)
+	    eeprom_update_block(menu.arr, &settings_saved, sizeof(settings_t));
+
 	update=1;
     }
 }
@@ -212,7 +216,6 @@ ISR(PCINT1_vect){
 	    menu.arr[menu_state-1]+=dir;
 	menu.arr[menu_state-1]%=setting_limits[menu_state-1];
 
-	eeprom_update_block(menu.arr, &settings_saved, sizeof(settings_t));
 	update=1;
     }
 }