timer lib added

ArduinoConfig.h

@@ -7,12 +7,13 @@ static const uint8_t COMMAND_TRANSFER_SPI = 1;
 // serial port which is usually also used to flash the Arduino
 // Can be disabled if this output interferes with the usual
 // serial communication logic
-#define PROGRAMMING_OUTPUT      1
+#define PROGRAMMING_OUTPUT          1
 
 #define BAUD_RATE               115200
 #define SERIAL_RX_BUFFER_SIZE   256
 #define RING_BUFFER_SIZE        100
 #define MAX_PACKET_LENGTH       100
+#define RING_BUFFER_CHECK_INTVL 1000
 
 // Define which port to use for the SPI Chip Select by using the register
 // definitions. The data direction register is assigned as well.