-const int PACKET_CTRL_LEN = 2;
-const int PACKET_INT_LEN = 2;
-const int PACKET_BULK_LEN = 64;
-const int INTERFACE = 0;
-const int ENDPOINT_INT_IN = 0x81; /* Endpoint 0x81 address for IN */
-const int ENDPOINT_INT_OUT = 0x01; /* Endpoint 1 address for OUT */
-const int ENDPOINT_BULK_IN = 0x81; /* Endpoint 0x81 address for IN */
-const int ENDPOINT_BULK_OUT = 0x02; /* Endpoint 1 address for OUT */
-const int TIMEOUT = 5000; /* Timeout in ms */