*          0 = ignore *          1 = use DTR state * B9    RTS state enable *          0 = ignore *          1 = use RTS state * B10..15 Reserved *//* FTDI_SIO_SET_FLOW_CTRL */#define FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE 0x40#define FTDI_SIO_SET_FLOW_CTRL_REQUEST FTDI_SIO_SET_FLOW_CTRL#define FTDI_SIO_DISABLE_FLOW_CTRL 0x0 #define FTDI_SIO_RTS_CTS_HS (0x1 << 8)#define FTDI_SIO_DTR_DSR_HS (0x2 << 8)#define FTDI_SIO_XON_XOFF_HS (0x4 << 8)/* *   BmRequestType:  0100 0000b *   bRequest:       FTDI_SIO_SET_FLOW_CTRL *   wValue:         Xoff/Xon *   wIndex:         Protocol/Port - hIndex is protocl / lIndex is port *   wLength:        0  *   Data:           None * * hIndex protocol is: *   B0 Output handshaking using RTS/CTS *       0 = disabled *       1 = enabled *   B1 Output handshaking using DTR/DSR *       0 = disabled *       1 = enabled *   B2 Xon/Xoff handshaking *       0 = disabled *       1 = enabled * * A value of zero in the hIndex field disables handshaking * * If Xon/Xoff handshaking is specified, the hValue field should contain the XOFF character  * and the lValue field contains the XON character. */   /* * FTDI_SIO_GET_LATENCY_TIMER * * Set the timeout interval. The FTDI collects data from the slave * device, transmitting it to the host when either A) 62 bytes are * received, or B) the timeout interval has elapsed and the buffer * contains at least 1 byte.  Setting this value to a small number * can dramatically improve performance for applications which send * small packets, since the default value is 16ms. */#define  FTDI_SIO_GET_LATENCY_TIMER_REQUEST FTDI_SIO_GET_LATENCY_TIMER#define  FTDI_SIO_GET_LATENCY_TIMER_REQUEST_TYPE 0xC0/*  *  BmRequestType:   1100 0000b *  bRequest:        FTDI_SIO_GET_LATENCY_TIMER *  wValue:          0 *  wIndex:          Port *  wLength:         0 *  Data:            latency (on return) *//*  * FTDI_SIO_SET_LATENCY_TIMER * * Set the timeout interval. The FTDI collects data from the slave * device, transmitting it to the host when either A) 62 bytes are * received, or B) the timeout interval has elapsed and the buffer * contains at least 1 byte.  Setting this value to a small number * can dramatically improve performance for applications which send * small packets, since the default value is 16ms. */#define  FTDI_SIO_SET_LATENCY_TIMER_REQUEST FTDI_SIO_SET_LATENCY_TIMER#define  FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE 0x40/*  *  BmRequestType:   0100 0000b *  bRequest:        FTDI_SIO_SET_LATENCY_TIMER *  wValue:          Latency (milliseconds) *  wIndex:          Port *  wLength:         0 *  Data:            None * * wValue: *   B0..7   Latency timer *   B8..15  0 * *//* * FTDI_SIO_SET_EVENT_CHAR  * * Set the special event character for the specified communications port. * If the device sees this character it will immediately return the * data read so far - rather than wait 40ms or until 62 bytes are read * which is what normally happens. */#define  FTDI_SIO_SET_EVENT_CHAR_REQUEST FTDI_SIO_SET_EVENT_CHAR#define  FTDI_SIO_SET_EVENT_CHAR_REQUEST_TYPE 0x40/*  *  BmRequestType:   0100 0000b *  bRequest:        FTDI_SIO_SET_EVENT_CHAR *  wValue:          EventChar *  wIndex:          Port *  wLength:         0 *  Data:            None * * wValue: *   B0..7   Event Character *   B8      Event Character Processing *             0 = disabled *             1 = enabled *   B9..15  Reserved * */          /* FTDI_SIO_SET_ERROR_CHAR *//* Set the parity error replacement character for the specified communications port *//*  *  BmRequestType:  0100 0000b *  bRequest:       FTDI_SIO_SET_EVENT_CHAR *  wValue:         Error Char *  wIndex:         Port *  wLength:        0 *  Data:           None * *Error Char *  B0..7  Error Character *  B8     Error Character Processing *           0 = disabled *           1 = enabled *  B9..15 Reserved * *//* FTDI_SIO_GET_MODEM_STATUS *//* Retrieve the current value of the modem status register */#define FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE 0xc0#define FTDI_SIO_GET_MODEM_STATUS_REQUEST FTDI_SIO_GET_MODEM_STATUS#define FTDI_SIO_CTS_MASK 0x10#define FTDI_SIO_DSR_MASK 0x20#define FTDI_SIO_RI_MASK  0x40#define FTDI_SIO_RLSD_MASK 0x80/*  *   BmRequestType:   1100 0000b *   bRequest:        FTDI_SIO_GET_MODEM_STATUS *   wValue:          zero *   wIndex:          Port *   wLength:         1 *   Data:            Status *  * One byte of data is returned  * B0..3 0 * B4    CTS *         0 = inactive *         1 = active * B5    DSR *         0 = inactive *         1 = active * B6    Ring Indicator (RI) *         0 = inactive *         1 = active * B7    Receive Line Signal Detect (RLSD) *         0 = inactive *         1 = active  *//* Descriptors returned by the device  *  *  Device Descriptor *  * Offset	Field		Size	Value	Description * 0	bLength		1	0x12	Size of descriptor in bytes * 1	bDescriptorType	1	0x01	DEVICE Descriptor Type * 2	bcdUSB		2	0x0110	USB Spec Release Number * 4	bDeviceClass	1	0x00	Class Code * 5	bDeviceSubClass	1	0x00	SubClass Code * 6	bDeviceProtocol	1	0x00	Protocol Code * 7	bMaxPacketSize0 1	0x08	Maximum packet size for endpoint 0 * 8	idVendor	2	0x0403	Vendor ID * 10	idProduct	2	0x8372	Product ID (FTDI_SIO_PID) * 12	bcdDevice	2	0x0001	Device release number * 14	iManufacturer	1	0x01	Index of man. string desc * 15	iProduct	1	0x02	Index of prod string desc * 16	iSerialNumber	1	0x02	Index of serial nmr string desc * 17	bNumConfigurations 1    0x01	Number of possible configurations *  * Configuration Descriptor *  * Offset	Field			Size	Value * 0	bLength			1	0x09	Size of descriptor in bytes * 1	bDescriptorType		1	0x02	CONFIGURATION Descriptor Type * 2	wTotalLength		2	0x0020	Total length of data * 4	bNumInterfaces		1	0x01	Number of interfaces supported * 5	bConfigurationValue	1	0x01	Argument for SetCOnfiguration() req * 6	iConfiguration		1	0x02	Index of config string descriptor * 7	bmAttributes		1	0x20	Config characteristics Remote Wakeup * 8	MaxPower		1	0x1E	Max power consumption *  * Interface Descriptor *  * Offset	Field			Size	Value * 0	bLength			1	0x09	Size of descriptor in bytes * 1	bDescriptorType		1	0x04	INTERFACE Descriptor Type * 2	bInterfaceNumber	1	0x00	Number of interface * 3	bAlternateSetting	1	0x00	Value used to select alternate * 4	bNumEndpoints		1	0x02	Number of endpoints * 5	bInterfaceClass		1	0xFF	Class Code * 6	bInterfaceSubClass	1	0xFF	Subclass Code * 7	bInterfaceProtocol	1	0xFF	Protocol Code * 8	iInterface		1	0x02	Index of interface string description *  * IN Endpoint Descriptor *  * Offset	Field			Size	Value * 0	bLength			1	0x07	Size of descriptor in bytes * 1	bDescriptorType		1	0x05	ENDPOINT descriptor type * 2	bEndpointAddress	1	0x82	Address of endpoint * 3	bmAttributes		1	0x02	Endpoint attributes - Bulk * 4	bNumEndpoints		2	0x0040	maximum packet size * 5	bInterval		1	0x00	Interval for polling endpoint *  * OUT Endpoint Descriptor *  * Offset	Field			Size	Value * 0	bLength			1	0x07	Size of descriptor in bytes * 1	bDescriptorType		1	0x05	ENDPOINT descriptor type * 2	bEndpointAddress	1	0x02	Address of endpoint * 3	bmAttributes		1	0x02	Endpoint attributes - Bulk * 4	bNumEndpoints		2	0x0040	maximum packet size * 5	bInterval		1	0x00	Interval for polling endpoint *      * DATA FORMAT *  * IN Endpoint *  * The device reserves the first two bytes of data on this endpoint to contain the current * values of the modem and line status registers. In the absence of data, the device  * generates a message consisting of these two status bytes every 40 ms *  * Byte 0: Modem Status *  * Offset	Description * B0	Reserved - must be 1 * B1	Reserved - must be 0 * B2	Reserved - must be 0 * B3	Reserved - must be 0 * B4	Clear to Send (CTS) * B5	Data Set Ready (DSR) * B6	Ring Indicator (RI) * B7	Receive Line Signal Detect (RLSD) *  * Byte 1: Line Status *  * Offset	Description * B0	Data Ready (DR) * B1	Overrun Error (OE) * B2	Parity Error (PE) * B3	Framing Error (FE) * B4	Break Interrupt (BI) * B5	Transmitter Holding Register (THRE) * B6	Transmitter Empty (TEMT) * B7	Error in RCVR FIFO *  */#define FTDI_RS0_CTS	(1 << 4)#define FTDI_RS0_DSR	(1 << 5)#define FTDI_RS0_RI	(1 << 6)#define FTDI_RS0_RLSD	(1 << 7)#define FTDI_RS_DR  1#define FTDI_RS_OE (1<<1)#define FTDI_RS_PE (1<<2)#define FTDI_RS_FE (1<<3)#define FTDI_RS_BI (1<<4)#define FTDI_RS_THRE (1<<5)#define FTDI_RS_TEMT (1<<6)#define FTDI_RS_FIFO  (1<<7)/* * OUT Endpoint *  * This device reserves the first bytes of data on this endpoint contain the length * and port identifier of the message. For the FTDI USB Serial converter the port  * identifier is always 1. *  * Byte 0: Line Status *  * Offset	Description * B0	Reserved - must be 1 * B1	Reserved - must be 0 * B2..7	Length of message - (not including Byte 0) *  */