add back config.example.h file

config.example.h

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+/**********************************************************************
+
+Config.h
+COPYRIGHT (c) 2013-2016 Gregg E. Berman
+COPYRIGHT (c) 2020 Fred Decker
+
+The configuration file for DCC++ EX Command Station
+
+**********************************************************************/
+
+/////////////////////////////////////////////////////////////////////////////////////
+//  NOTE: Before connecting these boards and selecting one in this software
+//        check the quick install guides!!! Some of these boards require a voltage
+//        generating resitor on the current sense pin of the device. Failure to select
+//        the correct resistor could damage the sense pin on your Arduino or destroy
+//        the device.
+//
+// DEFINE MOTOR_SHIELD_TYPE BELOW ACCORDING TO THE FOLLOWING TABLE:
+//
+//  STANDARD_MOTOR_SHIELD : Arduino Motor shield Rev3 based on the L298 with 18V 2A per channel
+//  POLOLU_MOTOR_SHIELD   : Pololu MC33926 Motor Driver (not recommended for prog track)
+//  FUNDUMOTO_SHIELD      : Fundumoto Shield, no current sensing (not recommended, no short protection)
+//  FIREBOX_MK1           : The Firebox MK1                    
+//  FIREBOX_MK1S          : The Firebox MK1S    
+//   |
+//   +-----------------------v
+//
+#define MOTOR_SHIELD_TYPE STANDARD_MOTOR_SHIELD
+
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// The IP port to talk to a WIFI or Ethernet shield.
+//
+#define IP_PORT 2560
+
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// NOTE: Only supported on Arduino Mega
+// Set to false if you not even want it on the Arduino Mega
+//
+#define ENABLE_WIFI true
+
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// DEFINE WiFi Parameters (only in effect if WIFI is on)
+//
+#define WIFI_SSID "Your network name"
+#define WIFI_PASSWORD "Your network passwd"
+#define WIFI_HOSTNAME "dccex"
+
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// DEFINE STATIC IP ADDRESS *OR* COMMENT OUT TO USE DHCP
+//
+//#define IP_ADDRESS { 192, 168, 1, 200 }
+
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// DEFINE MAC ADDRESS ARRAY FOR ETHERNET COMMUNICATIONS INTERFACE
+//
+// Uncomment to use with Ethernet Shields
+//
+// NOTE: This is not used with ESP8266 WiFi modules.
+// 
+// #define MAC_ADDRESS {  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xEF }
+
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// DEFINE LCD SCREEN USAGE BY THE BASE STATION
+//
+// Note: This feature requires an I2C enabled LCD screen using a PCF8574 based chipset.
+//       or one using a Hitachi  HD44780.
+//
+// To enable, uncomment the line below and make sure only the correct LIB_TYPE line
+// is uncommented below to select the library used for your LCD backpack
+
+//#define ENABLE_LCD
+
+#ifdef ENABLE_LCD
+    #define LIB_TYPE_PCF8574
+	//#define LIB_TYPE_I2C
+	// This defines the I2C address for the LCD device
+	#define LCD_ADDRESS 0x27 //common defaults are 0x27 and 0x3F
+
+	// This defines the number of columns the LCD device has
+	#define LCD_COLUMNS 16
+
+	// This defines the number of lines the LCD device has
+	#define LCD_LINES 2
+#endif
+
+
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// Enable custom command filtering
+#define ENABLE_CUSTOM_FILTER false
+
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// Enable custom command filtering
+#define ENABLE_CUSTOM_CALLBACK false
+
+/////////////////////////////////////////////////////////////////////////////////////
+//
+// Enable custom command filtering
+#define ENABLE_FREE_MEM_WARNING false