[libftdi] / src / ftdi.h

/***************************************************************************
                          ftdi.h  -  description
                             -------------------
    begin                : Fri Apr 4 2003
    copyright            : (C) 2003-2013 by Intra2net AG and the libftdi developers
    email                : opensource@intra2net.com
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU Lesser General Public License           *
 *   version 2.1 as published by the Free Software Foundation;             *
 *                                                                         *
 ***************************************************************************/

#ifndef __libftdi_h__
#define __libftdi_h__

#include <stdint.h>
#include <sys/time.h>

/** FTDI chip type */
enum ftdi_chip_type { TYPE_AM=0, TYPE_BM=1, TYPE_2232C=2, TYPE_R=3, TYPE_2232H=4, TYPE_4232H=5, TYPE_232H=6 };
/** Parity mode for ftdi_set_line_property() */
enum ftdi_parity_type { NONE=0, ODD=1, EVEN=2, MARK=3, SPACE=4 };
/** Number of stop bits for ftdi_set_line_property() */
enum ftdi_stopbits_type { STOP_BIT_1=0, STOP_BIT_15=1, STOP_BIT_2=2 };
/** Number of bits for ftdi_set_line_property() */
enum ftdi_bits_type { BITS_7=7, BITS_8=8 };
/** Break type for ftdi_set_line_property2() */
enum ftdi_break_type { BREAK_OFF=0, BREAK_ON=1 };

/** MPSSE bitbang modes */
enum ftdi_mpsse_mode
{
    BITMODE_RESET  = 0x00,    /**< switch off bitbang mode, back to regular serial/FIFO */
    BITMODE_BITBANG= 0x01,    /**< classical asynchronous bitbang mode, introduced with B-type chips */
    BITMODE_MPSSE  = 0x02,    /**< MPSSE mode, available on 2232x chips */
    BITMODE_SYNCBB = 0x04,    /**< synchronous bitbang mode, available on 2232x and R-type chips  */
    BITMODE_MCU    = 0x08,    /**< MCU Host Bus Emulation mode, available on 2232x chips */
                              /* CPU-style fifo mode gets set via EEPROM */
    BITMODE_OPTO   = 0x10,    /**< Fast Opto-Isolated Serial Interface Mode, available on 2232x chips  */
    BITMODE_CBUS   = 0x20,    /**< Bitbang on CBUS pins of R-type chips, configure in EEPROM before */
    BITMODE_SYNCFF = 0x40,    /**< Single Channel Synchronous FIFO mode, available on 2232H chips */
    BITMODE_FT1284 = 0x80,    /**< FT1284 mode, available on 232H chips */
};

/** Port interface for chips with multiple interfaces */
enum ftdi_interface
{
    INTERFACE_ANY = 0,
    INTERFACE_A   = 1,
    INTERFACE_B   = 2,
    INTERFACE_C   = 3,
    INTERFACE_D   = 4
};

/** Automatic loading / unloading of kernel modules */
enum ftdi_module_detach_mode
{
    AUTO_DETACH_SIO_MODULE = 0,
    DONT_DETACH_SIO_MODULE = 1
};

/* Shifting commands IN MPSSE Mode*/
#define MPSSE_WRITE_NEG 0x01   /* Write TDI/DO on negative TCK/SK edge*/
#define MPSSE_BITMODE   0x02   /* Write bits, not bytes */
#define MPSSE_READ_NEG  0x04   /* Sample TDO/DI on negative TCK/SK edge */
#define MPSSE_LSB       0x08   /* LSB first */
#define MPSSE_DO_WRITE  0x10   /* Write TDI/DO */
#define MPSSE_DO_READ   0x20   /* Read TDO/DI */
#define MPSSE_WRITE_TMS 0x40   /* Write TMS/CS */

/* FTDI MPSSE commands */
#define SET_BITS_LOW   0x80
/*BYTE DATA*/
/*BYTE Direction*/
#define SET_BITS_HIGH  0x82
/*BYTE DATA*/
/*BYTE Direction*/
#define GET_BITS_LOW   0x81
#define GET_BITS_HIGH  0x83
#define LOOPBACK_START 0x84
#define LOOPBACK_END   0x85
#define TCK_DIVISOR    0x86
/* H Type specific commands */
#define DIS_DIV_5       0x8a
#define EN_DIV_5        0x8b
#define EN_3_PHASE      0x8c
#define DIS_3_PHASE     0x8d
#define CLK_BITS        0x8e
#define CLK_BYTES       0x8f
#define CLK_WAIT_HIGH   0x94
#define CLK_WAIT_LOW    0x95
#define EN_ADAPTIVE     0x96
#define DIS_ADAPTIVE    0x97
#define CLK_BYTES_OR_HIGH 0x9c
#define CLK_BYTES_OR_LOW  0x0d
/*FT232H specific commands */
#define DRIVE_OPEN_COLLECTOR 0x9e
/* Value Low */
/* Value HIGH */ /*rate is 12000000/((1+value)*2) */
#define DIV_VALUE(rate) (rate > 6000000)?0:((6000000/rate -1) > 0xffff)? 0xffff: (6000000/rate -1)

/* Commands in MPSSE and Host Emulation Mode */
#define SEND_IMMEDIATE 0x87
#define WAIT_ON_HIGH   0x88
#define WAIT_ON_LOW    0x89

/* Commands in Host Emulation Mode */
#define READ_SHORT     0x90
/* Address_Low */
#define READ_EXTENDED  0x91
/* Address High */
/* Address Low  */
#define WRITE_SHORT    0x92
/* Address_Low */
#define WRITE_EXTENDED 0x93
/* Address High */
/* Address Low  */

/* Definitions for flow control */
#define SIO_RESET          0 /* Reset the port */
#define SIO_MODEM_CTRL     1 /* Set the modem control register */
#define SIO_SET_FLOW_CTRL  2 /* Set flow control register */
#define SIO_SET_BAUD_RATE  3 /* Set baud rate */
#define SIO_SET_DATA       4 /* Set the data characteristics of the port */

#define FTDI_DEVICE_OUT_REQTYPE (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_OUT)
#define FTDI_DEVICE_IN_REQTYPE (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE | LIBUSB_ENDPOINT_IN)

/* Requests */
#define SIO_RESET_REQUEST             SIO_RESET
#define SIO_SET_BAUDRATE_REQUEST      SIO_SET_BAUD_RATE
#define SIO_SET_DATA_REQUEST          SIO_SET_DATA
#define SIO_SET_FLOW_CTRL_REQUEST     SIO_SET_FLOW_CTRL
#define SIO_SET_MODEM_CTRL_REQUEST    SIO_MODEM_CTRL
#define SIO_POLL_MODEM_STATUS_REQUEST 0x05
#define SIO_SET_EVENT_CHAR_REQUEST    0x06
#define SIO_SET_ERROR_CHAR_REQUEST    0x07
#define SIO_SET_LATENCY_TIMER_REQUEST 0x09
#define SIO_GET_LATENCY_TIMER_REQUEST 0x0A
#define SIO_SET_BITMODE_REQUEST       0x0B
#define SIO_READ_PINS_REQUEST         0x0C
#define SIO_READ_EEPROM_REQUEST       0x90
#define SIO_WRITE_EEPROM_REQUEST      0x91
#define SIO_ERASE_EEPROM_REQUEST      0x92


#define SIO_RESET_SIO 0
#define SIO_RESET_PURGE_RX 1
#define SIO_RESET_PURGE_TX 2

#define SIO_DISABLE_FLOW_CTRL 0x0
#define SIO_RTS_CTS_HS (0x1 << 8)
#define SIO_DTR_DSR_HS (0x2 << 8)
#define SIO_XON_XOFF_HS (0x4 << 8)

#define SIO_SET_DTR_MASK 0x1
#define SIO_SET_DTR_HIGH ( 1 | ( SIO_SET_DTR_MASK  << 8))
#define SIO_SET_DTR_LOW  ( 0 | ( SIO_SET_DTR_MASK  << 8))
#define SIO_SET_RTS_MASK 0x2
#define SIO_SET_RTS_HIGH ( 2 | ( SIO_SET_RTS_MASK << 8 ))
#define SIO_SET_RTS_LOW ( 0 | ( SIO_SET_RTS_MASK << 8 ))

#define SIO_RTS_CTS_HS (0x1 << 8)

/* marker for unused usb urb structures
   (taken from libusb) */
#define FTDI_URB_USERCONTEXT_COOKIE ((void *)0x1)

#ifdef __GNUC__
    #define DEPRECATED(func) func __attribute__ ((deprecated))
#elif defined(_MSC_VER)
    #define DEPRECATED(func) __declspec(deprecated) func
#else
    #pragma message("WARNING: You need to implement DEPRECATED for this compiler")
    #define DEPRECATED(func) func
#endif

struct ftdi_transfer_control
{
    int completed;
    unsigned char *buf;
    int size;
    int offset;
    struct ftdi_context *ftdi;
    struct libusb_transfer *transfer;
};

/**
    \brief Main context structure for all libftdi functions.

    Do not access directly if possible.
*/
struct ftdi_context
{
    /* USB specific */
    /** libusb's context */
    struct libusb_context *usb_ctx;
    /** libusb's usb_dev_handle */
    struct libusb_device_handle *usb_dev;
    /** usb read timeout */
    int usb_read_timeout;
    /** usb write timeout */
    int usb_write_timeout;

    /* FTDI specific */
    /** FTDI chip type */
    enum ftdi_chip_type type;
    /** baudrate */
    int baudrate;
    /** bitbang mode state */
    unsigned char bitbang_enabled;
    /** pointer to read buffer for ftdi_read_data */
    unsigned char *readbuffer;
    /** read buffer offset */
    unsigned int readbuffer_offset;
    /** number of remaining data in internal read buffer */
    unsigned int readbuffer_remaining;
    /** read buffer chunk size */
    unsigned int readbuffer_chunksize;
    /** write buffer chunk size */
    unsigned int writebuffer_chunksize;
    /** maximum packet size. Needed for filtering modem status bytes every n packets. */
    unsigned int max_packet_size;

    /* FTDI FT2232C requirecments */
    /** FT2232C interface number: 0 or 1 */
    int interface;   /* 0 or 1 */
    /** FT2232C index number: 1 or 2 */
    int index;       /* 1 or 2 */
    /* Endpoints */
    /** FT2232C end points: 1 or 2 */
    int in_ep;
    int out_ep;      /* 1 or 2 */

    /** Bitbang mode. 1: (default) Normal bitbang mode, 2: FT2232C SPI bitbang mode */
    unsigned char bitbang_mode;

    /** Decoded eeprom structure */
    struct ftdi_eeprom *eeprom;

    /** String representation of last error */
    char *error_str;

    /** Defines behavior in case a kernel module is already attached to the device */
    enum ftdi_module_detach_mode module_detach_mode;
};

/**
 List all handled EEPROM values.
   Append future new values only at the end to provide API/ABI stability*/
enum ftdi_eeprom_value
{
    VENDOR_ID          = 0,
    PRODUCT_ID         = 1,
    SELF_POWERED       = 2,
    REMOTE_WAKEUP      = 3,
    IS_NOT_PNP         = 4,
    SUSPEND_DBUS7      = 5,
    IN_IS_ISOCHRONOUS  = 6,
    OUT_IS_ISOCHRONOUS = 7,
    SUSPEND_PULL_DOWNS = 8,
    USE_SERIAL         = 9,
    USB_VERSION        = 10,
    USE_USB_VERSION    = 11,
    MAX_POWER          = 12,
    CHANNEL_A_TYPE     = 13,
    CHANNEL_B_TYPE     = 14,
    CHANNEL_A_DRIVER   = 15,
    CHANNEL_B_DRIVER   = 16,
    CBUS_FUNCTION_0    = 17,
    CBUS_FUNCTION_1    = 18,
    CBUS_FUNCTION_2    = 19,
    CBUS_FUNCTION_3    = 20,
    CBUS_FUNCTION_4    = 21,
    CBUS_FUNCTION_5    = 22,
    CBUS_FUNCTION_6    = 23,
    CBUS_FUNCTION_7    = 24,
    CBUS_FUNCTION_8    = 25,
    CBUS_FUNCTION_9    = 26,
    HIGH_CURRENT       = 27,
    HIGH_CURRENT_A     = 28,
    HIGH_CURRENT_B     = 29,
    INVERT             = 30,
    GROUP0_DRIVE       = 31,
    GROUP0_SCHMITT     = 32,
    GROUP0_SLEW        = 33,
    GROUP1_DRIVE       = 34,
    GROUP1_SCHMITT     = 35,
    GROUP1_SLEW        = 36,
    GROUP2_DRIVE       = 37,
    GROUP2_SCHMITT     = 38,
    GROUP2_SLEW        = 39,
    GROUP3_DRIVE       = 40,
    GROUP3_SCHMITT     = 41,
    GROUP3_SLEW        = 42,
    CHIP_SIZE          = 43,
    CHIP_TYPE          = 44,
    POWER_SAVE         = 45,
    CLOCK_POLARITY     = 46,
    DATA_ORDER         = 47,
    FLOW_CONTROL       = 48,
    CHANNEL_C_DRIVER   = 49,
    CHANNEL_D_DRIVER   = 50,
    CHANNEL_A_RS485    = 51,
    CHANNEL_B_RS485    = 52,
    CHANNEL_C_RS485    = 53,
    CHANNEL_D_RS485    = 54,
};

/**
    \brief list of usb devices created by ftdi_usb_find_all()
*/
struct ftdi_device_list
{
    /** pointer to next entry */
    struct ftdi_device_list *next;
    /** pointer to libusb's usb_device */
    struct libusb_device *dev;
};
#define FT1284_CLK_IDLE_STATE 0x01
#define FT1284_DATA_LSB       0x02 /* DS_FT232H 1.3 amd ftd2xx.h 1.0.4 disagree here*/
#define FT1284_FLOW_CONTROL   0x04
#define POWER_SAVE_DISABLE_H 0x80

#define USE_SERIAL_NUM 0x08
enum ftdi_cbus_func {/* FIXME: Recheck value, especially the last */
    CBUS_TXDEN = 0, CBUS_PWREN = 1, CBUS_RXLED = 2, CBUS_TXLED = 3, CBUS_TXRXLED = 4,
    CBUS_SLEEP = 5, CBUS_CLK48 = 6, CBUS_CLK24 = 7, CBUS_CLK12 = 8, CBUS_CLK6 =  9,
    CBUS_IOMODE = 0xa, CBUS_BB_WR = 0xb, CBUS_BB_RD = 0xc, CBUS_BB   = 0xd};

enum ftdi_cbush_func {/* FIXME: Recheck value, especially the last */
    CBUSH_TRISTATE = 0, CBUSH_RXLED = 1, CBUSH_TXLED = 2, CBUSH_TXRXLED = 3, CBUSH_PWREN = 4,
    CBUSH_SLEEP = 5, CBUSH_DRIVE_0 = 6, CBUSG_DRIVE1 = 7, CBUSH_IOMODE = 8, CBUSH_TXDEN =  9,
    CBUSH_CLK30 = 0xa, CBUSH_CLK15 = 0xb, CBUSH_CLK7_5 = 0xc};

/** Invert TXD# */
#define INVERT_TXD 0x01
/** Invert RXD# */
#define INVERT_RXD 0x02
/** Invert RTS# */
#define INVERT_RTS 0x04
/** Invert CTS# */
#define INVERT_CTS 0x08
/** Invert DTR# */
#define INVERT_DTR 0x10
/** Invert DSR# */
#define INVERT_DSR 0x20
/** Invert DCD# */
#define INVERT_DCD 0x40
/** Invert RI# */
#define INVERT_RI  0x80

/** Interface Mode. */
#define CHANNEL_IS_UART 0x0
#define CHANNEL_IS_FIFO 0x1
#define CHANNEL_IS_OPTO 0x2
#define CHANNEL_IS_CPU  0x4
#define CHANNEL_IS_FT1284 0x8

#define CHANNEL_IS_RS485 0x10

#define DRIVE_4MA  0
#define DRIVE_8MA  1
#define DRIVE_12MA 2
#define DRIVE_16MA 3
#define SLOW_SLEW  4
#define IS_SCHMITT 8

/** Driver Type. */
#define DRIVER_VCP 0x08
#define DRIVER_VCPH 0x10 /* FT232H has moved the VCP bit */

#define USE_USB_VERSION_BIT 0x10

#define SUSPEND_DBUS7_BIT 0x80

/** High current drive. */
#define HIGH_CURRENT_DRIVE   0x10
#define HIGH_CURRENT_DRIVE_R 0x04

/**
    \brief Progress Info for streaming read
*/
struct size_and_time
{
        uint64_t totalBytes;
        struct timeval time;
};

typedef struct
{
    struct size_and_time first;
    struct size_and_time prev;
    struct size_and_time current;
    double totalTime;
    double totalRate;
    double currentRate;
} FTDIProgressInfo;

typedef int (FTDIStreamCallback)(uint8_t *buffer, int length,
                                 FTDIProgressInfo *progress, void *userdata);

/**
 * Provide libftdi version information
 * major: Library major version
 * minor: Library minor version
 * micro: Currently unused, ight get used for hotfixes.
 * version_str: Version as (static) string
 * snapshot_str: Git snapshot version if known. Otherwise "unknown" or empty string.
*/
struct ftdi_version_info
{
    int major;
    int minor;
    int micro;
    const char *version_str;
    const char *snapshot_str;
};


#ifdef __cplusplus
extern "C"
{
#endif

    int ftdi_init(struct ftdi_context *ftdi);
    struct ftdi_context *ftdi_new(void);
    int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface);

    void ftdi_deinit(struct ftdi_context *ftdi);
    void ftdi_free(struct ftdi_context *ftdi);
    void ftdi_set_usbdev (struct ftdi_context *ftdi, struct libusb_device_handle *usbdev);

    struct ftdi_version_info ftdi_get_library_version();

    int ftdi_usb_find_all(struct ftdi_context *ftdi, struct ftdi_device_list **devlist,
                          int vendor, int product);
    void ftdi_list_free(struct ftdi_device_list **devlist);
    void ftdi_list_free2(struct ftdi_device_list *devlist);
    int ftdi_usb_get_strings(struct ftdi_context *ftdi, struct libusb_device *dev,
                             char * manufacturer, int mnf_len,
                             char * description, int desc_len,
                             char * serial, int serial_len);

    int ftdi_usb_open(struct ftdi_context *ftdi, int vendor, int product);
    int ftdi_usb_open_desc(struct ftdi_context *ftdi, int vendor, int product,
                           const char* description, const char* serial);
    int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product,
                           const char* description, const char* serial, unsigned int index);
    int ftdi_usb_open_dev(struct ftdi_context *ftdi, struct libusb_device *dev);
    int ftdi_usb_open_string(struct ftdi_context *ftdi, const char* description);

    int ftdi_usb_close(struct ftdi_context *ftdi);
    int ftdi_usb_reset(struct ftdi_context *ftdi);
    int ftdi_usb_purge_rx_buffer(struct ftdi_context *ftdi);
    int ftdi_usb_purge_tx_buffer(struct ftdi_context *ftdi);
    int ftdi_usb_purge_buffers(struct ftdi_context *ftdi);

    int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate);
    int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
                               enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity);
    int ftdi_set_line_property2(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
                                enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity,
                                enum ftdi_break_type break_type);

    int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
    int ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
    int ftdi_read_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);

    int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
    int ftdi_write_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
    int ftdi_write_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);

    int ftdi_readstream(struct ftdi_context *ftdi, FTDIStreamCallback *callback,
                        void *userdata, int packetsPerTransfer, int numTransfers);
    struct ftdi_transfer_control *ftdi_write_data_submit(struct ftdi_context *ftdi, unsigned char *buf, int size);

    struct ftdi_transfer_control *ftdi_read_data_submit(struct ftdi_context *ftdi, unsigned char *buf, int size);
    int ftdi_transfer_data_done(struct ftdi_transfer_control *tc);

    int ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode);
    int ftdi_disable_bitbang(struct ftdi_context *ftdi);
    int ftdi_read_pins(struct ftdi_context *ftdi, unsigned char *pins);

    int ftdi_set_latency_timer(struct ftdi_context *ftdi, unsigned char latency);
    int ftdi_get_latency_timer(struct ftdi_context *ftdi, unsigned char *latency);

    int ftdi_poll_modem_status(struct ftdi_context *ftdi, unsigned short *status);

    /* flow control */
    int ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl);
    int ftdi_setdtr_rts(struct ftdi_context *ftdi, int dtr, int rts);
    int ftdi_setdtr(struct ftdi_context *ftdi, int state);
    int ftdi_setrts(struct ftdi_context *ftdi, int state);

    int ftdi_set_event_char(struct ftdi_context *ftdi, unsigned char eventch, unsigned char enable);
    int ftdi_set_error_char(struct ftdi_context *ftdi, unsigned char errorch, unsigned char enable);

    /* init eeprom for the given FTDI type */
    int ftdi_eeprom_initdefaults(struct ftdi_context *ftdi, 
                                  char * manufacturer, char *product, 
                                  char * serial);
    int ftdi_eeprom_build(struct ftdi_context *ftdi);
    int ftdi_eeprom_decode(struct ftdi_context *ftdi, int verbose);

    int ftdi_get_eeprom_value(struct ftdi_context *ftdi, enum ftdi_eeprom_value value_name, int* value);
    int ftdi_set_eeprom_value(struct ftdi_context *ftdi, enum ftdi_eeprom_value value_name, int  value);

    int ftdi_get_eeprom_buf(struct ftdi_context *ftdi, unsigned char * buf, int size);
    int ftdi_set_eeprom_buf(struct ftdi_context *ftdi, const unsigned char * buf, int size);

    int ftdi_read_eeprom(struct ftdi_context *ftdi);
    int ftdi_read_chipid(struct ftdi_context *ftdi, unsigned int *chipid);
    int ftdi_write_eeprom(struct ftdi_context *ftdi);
    int ftdi_erase_eeprom(struct ftdi_context *ftdi);

    int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsigned short *eeprom_val);
    int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr, unsigned short eeprom_val);

    char *ftdi_get_error_string(struct ftdi_context *ftdi);

#ifdef __cplusplus
}
#endif

#endif /* __libftdi_h__ */
Commit	Line	Data
	1	/***************************************************************************
	2	ftdi.h - description
	3	-------------------
	4	begin : Fri Apr 4 2003
	5	copyright : (C) 2003-2013 by Intra2net AG and the libftdi developers
	6	email : opensource@intra2net.com
	7	***************************************************************************/
	8
	9	/***************************************************************************
	10	* *
	11	* This program is free software; you can redistribute it and/or modify *
	12	* it under the terms of the GNU Lesser General Public License *
	13	* version 2.1 as published by the Free Software Foundation; *
	14	* *
	15	***************************************************************************/
	16
	17	#ifndef __libftdi_h__
	18	#define __libftdi_h__
	19
	20	#include <stdint.h>
	21	#include <sys/time.h>
	22
	23	/** FTDI chip type */
	24	enum ftdi_chip_type { TYPE_AM=0, TYPE_BM=1, TYPE_2232C=2, TYPE_R=3, TYPE_2232H=4, TYPE_4232H=5, TYPE_232H=6 };
	25	/** Parity mode for ftdi_set_line_property() */
	26	enum ftdi_parity_type { NONE=0, ODD=1, EVEN=2, MARK=3, SPACE=4 };
	27	/** Number of stop bits for ftdi_set_line_property() */
	28	enum ftdi_stopbits_type { STOP_BIT_1=0, STOP_BIT_15=1, STOP_BIT_2=2 };
	29	/** Number of bits for ftdi_set_line_property() */
	30	enum ftdi_bits_type { BITS_7=7, BITS_8=8 };
	31	/** Break type for ftdi_set_line_property2() */
	32	enum ftdi_break_type { BREAK_OFF=0, BREAK_ON=1 };
	33
	34	/** MPSSE bitbang modes */
	35	enum ftdi_mpsse_mode
	36	{
	37	BITMODE_RESET = 0x00, /*< switch off bitbang mode, back to regular serial/FIFO /
	38	BITMODE_BITBANG= 0x01, /*< classical asynchronous bitbang mode, introduced with B-type chips /
	39	BITMODE_MPSSE = 0x02, /*< MPSSE mode, available on 2232x chips /
	40	BITMODE_SYNCBB = 0x04, /*< synchronous bitbang mode, available on 2232x and R-type chips /
	41	BITMODE_MCU = 0x08, /*< MCU Host Bus Emulation mode, available on 2232x chips /
	42	/* CPU-style fifo mode gets set via EEPROM */
	43	BITMODE_OPTO = 0x10, /*< Fast Opto-Isolated Serial Interface Mode, available on 2232x chips /
	44	BITMODE_CBUS = 0x20, /*< Bitbang on CBUS pins of R-type chips, configure in EEPROM before /
	45	BITMODE_SYNCFF = 0x40, /*< Single Channel Synchronous FIFO mode, available on 2232H chips /
	46	BITMODE_FT1284 = 0x80, /*< FT1284 mode, available on 232H chips /
	47	};
	48
	49	/** Port interface for chips with multiple interfaces */
	50	enum ftdi_interface
	51	{
	52	INTERFACE_ANY = 0,
	53	INTERFACE_A = 1,
	54	INTERFACE_B = 2,
	55	INTERFACE_C = 3,
	56	INTERFACE_D = 4
	57	};
	58
	59	/** Automatic loading / unloading of kernel modules */
	60	enum ftdi_module_detach_mode
	61	{
	62	AUTO_DETACH_SIO_MODULE = 0,
	63	DONT_DETACH_SIO_MODULE = 1
	64	};
	65
	66	/* Shifting commands IN MPSSE Mode*/
	67	#define MPSSE_WRITE_NEG 0x01 /* Write TDI/DO on negative TCK/SK edge*/
	68	#define MPSSE_BITMODE 0x02 /* Write bits, not bytes */
	69	#define MPSSE_READ_NEG 0x04 /* Sample TDO/DI on negative TCK/SK edge */
	70	#define MPSSE_LSB 0x08 /* LSB first */
	71	#define MPSSE_DO_WRITE 0x10 /* Write TDI/DO */
	72	#define MPSSE_DO_READ 0x20 /* Read TDO/DI */
	73	#define MPSSE_WRITE_TMS 0x40 /* Write TMS/CS */
	74
	75	/* FTDI MPSSE commands */
	76	#define SET_BITS_LOW 0x80
	77	/BYTE DATA/
	78	/BYTE Direction/
	79	#define SET_BITS_HIGH 0x82
	80	/BYTE DATA/
	81	/BYTE Direction/
	82	#define GET_BITS_LOW 0x81
	83	#define GET_BITS_HIGH 0x83
	84	#define LOOPBACK_START 0x84
	85	#define LOOPBACK_END 0x85
	86	#define TCK_DIVISOR 0x86
	87	/* H Type specific commands */
	88	#define DIS_DIV_5 0x8a
	89	#define EN_DIV_5 0x8b
	90	#define EN_3_PHASE 0x8c
	91	#define DIS_3_PHASE 0x8d
	92	#define CLK_BITS 0x8e
	93	#define CLK_BYTES 0x8f
	94	#define CLK_WAIT_HIGH 0x94
	95	#define CLK_WAIT_LOW 0x95
	96	#define EN_ADAPTIVE 0x96
	97	#define DIS_ADAPTIVE 0x97
	98	#define CLK_BYTES_OR_HIGH 0x9c
	99	#define CLK_BYTES_OR_LOW 0x0d
	100	/FT232H specific commands /
	101	#define DRIVE_OPEN_COLLECTOR 0x9e
	102	/* Value Low */
	103	/* Value HIGH / /rate is 12000000/((1+value)2) /
	104	#define DIV_VALUE(rate) (rate > 6000000)?0:((6000000/rate -1) > 0xffff)? 0xffff: (6000000/rate -1)
	105
	106	/* Commands in MPSSE and Host Emulation Mode */
	107	#define SEND_IMMEDIATE 0x87
	108	#define WAIT_ON_HIGH 0x88
	109	#define WAIT_ON_LOW 0x89
	110
	111	/* Commands in Host Emulation Mode */
	112	#define READ_SHORT 0x90
	113	/* Address_Low */
	114	#define READ_EXTENDED 0x91
	115	/* Address High */
	116	/* Address Low */
	117	#define WRITE_SHORT 0x92
	118	/* Address_Low */
	119	#define WRITE_EXTENDED 0x93
	120	/* Address High */
	121	/* Address Low */
	122
	123	/* Definitions for flow control */
	124	#define SIO_RESET 0 /* Reset the port */
	125	#define SIO_MODEM_CTRL 1 /* Set the modem control register */
	126	#define SIO_SET_FLOW_CTRL 2 /* Set flow control register */
	127	#define SIO_SET_BAUD_RATE 3 /* Set baud rate */
	128	#define SIO_SET_DATA 4 /* Set the data characteristics of the port */
	129
	130	#define FTDI_DEVICE_OUT_REQTYPE (LIBUSB_REQUEST_TYPE_VENDOR \| LIBUSB_RECIPIENT_DEVICE \| LIBUSB_ENDPOINT_OUT)
	131	#define FTDI_DEVICE_IN_REQTYPE (LIBUSB_REQUEST_TYPE_VENDOR \| LIBUSB_RECIPIENT_DEVICE \| LIBUSB_ENDPOINT_IN)
	132
	133	/* Requests */
	134	#define SIO_RESET_REQUEST SIO_RESET
	135	#define SIO_SET_BAUDRATE_REQUEST SIO_SET_BAUD_RATE
	136	#define SIO_SET_DATA_REQUEST SIO_SET_DATA
	137	#define SIO_SET_FLOW_CTRL_REQUEST SIO_SET_FLOW_CTRL
	138	#define SIO_SET_MODEM_CTRL_REQUEST SIO_MODEM_CTRL
	139	#define SIO_POLL_MODEM_STATUS_REQUEST 0x05
	140	#define SIO_SET_EVENT_CHAR_REQUEST 0x06
	141	#define SIO_SET_ERROR_CHAR_REQUEST 0x07
	142	#define SIO_SET_LATENCY_TIMER_REQUEST 0x09
	143	#define SIO_GET_LATENCY_TIMER_REQUEST 0x0A
	144	#define SIO_SET_BITMODE_REQUEST 0x0B
	145	#define SIO_READ_PINS_REQUEST 0x0C
	146	#define SIO_READ_EEPROM_REQUEST 0x90
	147	#define SIO_WRITE_EEPROM_REQUEST 0x91
	148	#define SIO_ERASE_EEPROM_REQUEST 0x92
	149
	150
	151	#define SIO_RESET_SIO 0
	152	#define SIO_RESET_PURGE_RX 1
	153	#define SIO_RESET_PURGE_TX 2
	154
	155	#define SIO_DISABLE_FLOW_CTRL 0x0
	156	#define SIO_RTS_CTS_HS (0x1 << 8)
	157	#define SIO_DTR_DSR_HS (0x2 << 8)
	158	#define SIO_XON_XOFF_HS (0x4 << 8)
	159
	160	#define SIO_SET_DTR_MASK 0x1
	161	#define SIO_SET_DTR_HIGH ( 1 \| ( SIO_SET_DTR_MASK << 8))
	162	#define SIO_SET_DTR_LOW ( 0 \| ( SIO_SET_DTR_MASK << 8))
	163	#define SIO_SET_RTS_MASK 0x2
	164	#define SIO_SET_RTS_HIGH ( 2 \| ( SIO_SET_RTS_MASK << 8 ))
	165	#define SIO_SET_RTS_LOW ( 0 \| ( SIO_SET_RTS_MASK << 8 ))
	166
	167	#define SIO_RTS_CTS_HS (0x1 << 8)
	168
	169	/* marker for unused usb urb structures
	170	(taken from libusb) */
	171	#define FTDI_URB_USERCONTEXT_COOKIE ((void *)0x1)
	172
	173	#ifdef __GNUC__
	174	#define DEPRECATED(func) func __attribute__ ((deprecated))
	175	#elif defined(_MSC_VER)
	176	#define DEPRECATED(func) __declspec(deprecated) func
	177	#else
	178	#pragma message("WARNING: You need to implement DEPRECATED for this compiler")
	179	#define DEPRECATED(func) func
	180	#endif
	181
	182	struct ftdi_transfer_control
	183	{
	184	int completed;
	185	unsigned char *buf;
	186	int size;
	187	int offset;
	188	struct ftdi_context *ftdi;
	189	struct libusb_transfer *transfer;
	190	};
	191
	192	/**
	193	\brief Main context structure for all libftdi functions.
	194
	195	Do not access directly if possible.
	196	*/
	197	struct ftdi_context
	198	{
	199	/* USB specific */
	200	/** libusb's context */
	201	struct libusb_context *usb_ctx;
	202	/** libusb's usb_dev_handle */
	203	struct libusb_device_handle *usb_dev;
	204	/** usb read timeout */
	205	int usb_read_timeout;
	206	/** usb write timeout */
	207	int usb_write_timeout;
	208
	209	/* FTDI specific */
	210	/** FTDI chip type */
	211	enum ftdi_chip_type type;
	212	/** baudrate */
	213	int baudrate;
	214	/** bitbang mode state */
	215	unsigned char bitbang_enabled;
	216	/** pointer to read buffer for ftdi_read_data */
	217	unsigned char *readbuffer;
	218	/** read buffer offset */
	219	unsigned int readbuffer_offset;
	220	/** number of remaining data in internal read buffer */
	221	unsigned int readbuffer_remaining;
	222	/** read buffer chunk size */
	223	unsigned int readbuffer_chunksize;
	224	/** write buffer chunk size */
	225	unsigned int writebuffer_chunksize;
	226	/** maximum packet size. Needed for filtering modem status bytes every n packets. */
	227	unsigned int max_packet_size;
	228
	229	/* FTDI FT2232C requirecments */
	230	/** FT2232C interface number: 0 or 1 */
	231	int interface; /* 0 or 1 */
	232	/** FT2232C index number: 1 or 2 */
	233	int index; /* 1 or 2 */
	234	/* Endpoints */
	235	/** FT2232C end points: 1 or 2 */
	236	int in_ep;
	237	int out_ep; /* 1 or 2 */
	238
	239	/** Bitbang mode. 1: (default) Normal bitbang mode, 2: FT2232C SPI bitbang mode */
	240	unsigned char bitbang_mode;
	241
	242	/** Decoded eeprom structure */
	243	struct ftdi_eeprom *eeprom;
	244
	245	/** String representation of last error */
	246	char *error_str;
	247
	248	/** Defines behavior in case a kernel module is already attached to the device */
	249	enum ftdi_module_detach_mode module_detach_mode;
	250	};
	251
	252	/**
	253	List all handled EEPROM values.
	254	Append future new values only at the end to provide API/ABI stability*/
	255	enum ftdi_eeprom_value
	256	{
	257	VENDOR_ID = 0,
	258	PRODUCT_ID = 1,
	259	SELF_POWERED = 2,
	260	REMOTE_WAKEUP = 3,
	261	IS_NOT_PNP = 4,
	262	SUSPEND_DBUS7 = 5,
	263	IN_IS_ISOCHRONOUS = 6,
	264	OUT_IS_ISOCHRONOUS = 7,
	265	SUSPEND_PULL_DOWNS = 8,
	266	USE_SERIAL = 9,
	267	USB_VERSION = 10,
	268	USE_USB_VERSION = 11,
	269	MAX_POWER = 12,
	270	CHANNEL_A_TYPE = 13,
	271	CHANNEL_B_TYPE = 14,
	272	CHANNEL_A_DRIVER = 15,
	273	CHANNEL_B_DRIVER = 16,
	274	CBUS_FUNCTION_0 = 17,
	275	CBUS_FUNCTION_1 = 18,
	276	CBUS_FUNCTION_2 = 19,
	277	CBUS_FUNCTION_3 = 20,
	278	CBUS_FUNCTION_4 = 21,
	279	CBUS_FUNCTION_5 = 22,
	280	CBUS_FUNCTION_6 = 23,
	281	CBUS_FUNCTION_7 = 24,
	282	CBUS_FUNCTION_8 = 25,
	283	CBUS_FUNCTION_9 = 26,
	284	HIGH_CURRENT = 27,
	285	HIGH_CURRENT_A = 28,
	286	HIGH_CURRENT_B = 29,
	287	INVERT = 30,
	288	GROUP0_DRIVE = 31,
	289	GROUP0_SCHMITT = 32,
	290	GROUP0_SLEW = 33,
	291	GROUP1_DRIVE = 34,
	292	GROUP1_SCHMITT = 35,
	293	GROUP1_SLEW = 36,
	294	GROUP2_DRIVE = 37,
	295	GROUP2_SCHMITT = 38,
	296	GROUP2_SLEW = 39,
	297	GROUP3_DRIVE = 40,
	298	GROUP3_SCHMITT = 41,
	299	GROUP3_SLEW = 42,
	300	CHIP_SIZE = 43,
	301	CHIP_TYPE = 44,
	302	POWER_SAVE = 45,
	303	CLOCK_POLARITY = 46,
	304	DATA_ORDER = 47,
	305	FLOW_CONTROL = 48,
	306	CHANNEL_C_DRIVER = 49,
	307	CHANNEL_D_DRIVER = 50,
	308	CHANNEL_A_RS485 = 51,
	309	CHANNEL_B_RS485 = 52,
	310	CHANNEL_C_RS485 = 53,
	311	CHANNEL_D_RS485 = 54,
	312	};
	313
	314	/**
	315	\brief list of usb devices created by ftdi_usb_find_all()
	316	*/
	317	struct ftdi_device_list
	318	{
	319	/** pointer to next entry */
	320	struct ftdi_device_list *next;
	321	/** pointer to libusb's usb_device */
	322	struct libusb_device *dev;
	323	};
	324	#define FT1284_CLK_IDLE_STATE 0x01
	325	#define FT1284_DATA_LSB 0x02 /* DS_FT232H 1.3 amd ftd2xx.h 1.0.4 disagree here*/
	326	#define FT1284_FLOW_CONTROL 0x04
	327	#define POWER_SAVE_DISABLE_H 0x80
	328
	329	#define USE_SERIAL_NUM 0x08
	330	enum ftdi_cbus_func {/* FIXME: Recheck value, especially the last */
	331	CBUS_TXDEN = 0, CBUS_PWREN = 1, CBUS_RXLED = 2, CBUS_TXLED = 3, CBUS_TXRXLED = 4,
	332	CBUS_SLEEP = 5, CBUS_CLK48 = 6, CBUS_CLK24 = 7, CBUS_CLK12 = 8, CBUS_CLK6 = 9,
	333	CBUS_IOMODE = 0xa, CBUS_BB_WR = 0xb, CBUS_BB_RD = 0xc, CBUS_BB = 0xd};
	334
	335	enum ftdi_cbush_func {/* FIXME: Recheck value, especially the last */
	336	CBUSH_TRISTATE = 0, CBUSH_RXLED = 1, CBUSH_TXLED = 2, CBUSH_TXRXLED = 3, CBUSH_PWREN = 4,
	337	CBUSH_SLEEP = 5, CBUSH_DRIVE_0 = 6, CBUSG_DRIVE1 = 7, CBUSH_IOMODE = 8, CBUSH_TXDEN = 9,
	338	CBUSH_CLK30 = 0xa, CBUSH_CLK15 = 0xb, CBUSH_CLK7_5 = 0xc};
	339
	340	/** Invert TXD# */
	341	#define INVERT_TXD 0x01
	342	/** Invert RXD# */
	343	#define INVERT_RXD 0x02
	344	/** Invert RTS# */
	345	#define INVERT_RTS 0x04
	346	/** Invert CTS# */
	347	#define INVERT_CTS 0x08
	348	/** Invert DTR# */
	349	#define INVERT_DTR 0x10
	350	/** Invert DSR# */
	351	#define INVERT_DSR 0x20
	352	/** Invert DCD# */
	353	#define INVERT_DCD 0x40
	354	/** Invert RI# */
	355	#define INVERT_RI 0x80
	356
	357	/** Interface Mode. */
	358	#define CHANNEL_IS_UART 0x0
	359	#define CHANNEL_IS_FIFO 0x1
	360	#define CHANNEL_IS_OPTO 0x2
	361	#define CHANNEL_IS_CPU 0x4
	362	#define CHANNEL_IS_FT1284 0x8
	363
	364	#define CHANNEL_IS_RS485 0x10
	365
	366	#define DRIVE_4MA 0
	367	#define DRIVE_8MA 1
	368	#define DRIVE_12MA 2
	369	#define DRIVE_16MA 3
	370	#define SLOW_SLEW 4
	371	#define IS_SCHMITT 8
	372
	373	/** Driver Type. */
	374	#define DRIVER_VCP 0x08
	375	#define DRIVER_VCPH 0x10 /* FT232H has moved the VCP bit */
	376
	377	#define USE_USB_VERSION_BIT 0x10
	378
	379	#define SUSPEND_DBUS7_BIT 0x80
	380
	381	/** High current drive. */
	382	#define HIGH_CURRENT_DRIVE 0x10
	383	#define HIGH_CURRENT_DRIVE_R 0x04
	384
	385	/**
	386	\brief Progress Info for streaming read
	387	*/
	388	struct size_and_time
	389	{
	390	uint64_t totalBytes;
	391	struct timeval time;
	392	};
	393
	394	typedef struct
	395	{
	396	struct size_and_time first;
	397	struct size_and_time prev;
	398	struct size_and_time current;
	399	double totalTime;
	400	double totalRate;
	401	double currentRate;
	402	} FTDIProgressInfo;
	403
	404	typedef int (FTDIStreamCallback)(uint8_t *buffer, int length,
	405	FTDIProgressInfo progress, void userdata);
	406
	407	/**
	408	* Provide libftdi version information
	409	* major: Library major version
	410	* minor: Library minor version
	411	* micro: Currently unused, ight get used for hotfixes.
	412	* version_str: Version as (static) string
	413	* snapshot_str: Git snapshot version if known. Otherwise "unknown" or empty string.
	414	*/
	415	struct ftdi_version_info
	416	{
	417	int major;
	418	int minor;
	419	int micro;
	420	const char *version_str;
	421	const char *snapshot_str;
	422	};
	423
	424
	425	#ifdef __cplusplus
	426	extern "C"
	427	{
	428	#endif
	429
	430	int ftdi_init(struct ftdi_context *ftdi);
	431	struct ftdi_context *ftdi_new(void);
	432	int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface);
	433
	434	void ftdi_deinit(struct ftdi_context *ftdi);
	435	void ftdi_free(struct ftdi_context *ftdi);
	436	void ftdi_set_usbdev (struct ftdi_context ftdi, struct libusb_device_handle usbdev);
	437
	438	struct ftdi_version_info ftdi_get_library_version();
	439
	440	int ftdi_usb_find_all(struct ftdi_context ftdi, struct ftdi_device_list *devlist,
	441	int vendor, int product);
	442	void ftdi_list_free(struct ftdi_device_list **devlist);
	443	void ftdi_list_free2(struct ftdi_device_list *devlist);
	444	int ftdi_usb_get_strings(struct ftdi_context ftdi, struct libusb_device dev,
	445	char * manufacturer, int mnf_len,
	446	char * description, int desc_len,
	447	char * serial, int serial_len);
	448
	449	int ftdi_usb_open(struct ftdi_context *ftdi, int vendor, int product);
	450	int ftdi_usb_open_desc(struct ftdi_context *ftdi, int vendor, int product,
	451	const char* description, const char* serial);
	452	int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product,
	453	const char* description, const char* serial, unsigned int index);
	454	int ftdi_usb_open_dev(struct ftdi_context ftdi, struct libusb_device dev);
	455	int ftdi_usb_open_string(struct ftdi_context ftdi, const char description);
	456
	457	int ftdi_usb_close(struct ftdi_context *ftdi);
	458	int ftdi_usb_reset(struct ftdi_context *ftdi);
	459	int ftdi_usb_purge_rx_buffer(struct ftdi_context *ftdi);
	460	int ftdi_usb_purge_tx_buffer(struct ftdi_context *ftdi);
	461	int ftdi_usb_purge_buffers(struct ftdi_context *ftdi);
	462
	463	int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate);
	464	int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
	465	enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity);
	466	int ftdi_set_line_property2(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
	467	enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity,
	468	enum ftdi_break_type break_type);
	469
	470	int ftdi_read_data(struct ftdi_context ftdi, unsigned char buf, int size);
	471	int ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
	472	int ftdi_read_data_get_chunksize(struct ftdi_context ftdi, unsigned int chunksize);
	473
	474	int ftdi_write_data(struct ftdi_context ftdi, unsigned char buf, int size);
	475	int ftdi_write_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
	476	int ftdi_write_data_get_chunksize(struct ftdi_context ftdi, unsigned int chunksize);
	477
	478	int ftdi_readstream(struct ftdi_context ftdi, FTDIStreamCallback callback,
	479	void *userdata, int packetsPerTransfer, int numTransfers);
	480	struct ftdi_transfer_control ftdi_write_data_submit(struct ftdi_context ftdi, unsigned char *buf, int size);
	481
	482	struct ftdi_transfer_control ftdi_read_data_submit(struct ftdi_context ftdi, unsigned char *buf, int size);
	483	int ftdi_transfer_data_done(struct ftdi_transfer_control *tc);
	484
	485	int ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode);
	486	int ftdi_disable_bitbang(struct ftdi_context *ftdi);
	487	int ftdi_read_pins(struct ftdi_context ftdi, unsigned char pins);
	488
	489	int ftdi_set_latency_timer(struct ftdi_context *ftdi, unsigned char latency);
	490	int ftdi_get_latency_timer(struct ftdi_context ftdi, unsigned char latency);
	491
	492	int ftdi_poll_modem_status(struct ftdi_context ftdi, unsigned short status);
	493
	494	/* flow control */
	495	int ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl);
	496	int ftdi_setdtr_rts(struct ftdi_context *ftdi, int dtr, int rts);
	497	int ftdi_setdtr(struct ftdi_context *ftdi, int state);
	498	int ftdi_setrts(struct ftdi_context *ftdi, int state);
	499
	500	int ftdi_set_event_char(struct ftdi_context *ftdi, unsigned char eventch, unsigned char enable);
	501	int ftdi_set_error_char(struct ftdi_context *ftdi, unsigned char errorch, unsigned char enable);
	502
	503	/* init eeprom for the given FTDI type */
	504	int ftdi_eeprom_initdefaults(struct ftdi_context *ftdi,
	505	char * manufacturer, char *product,
	506	char * serial);
	507	int ftdi_eeprom_build(struct ftdi_context *ftdi);
	508	int ftdi_eeprom_decode(struct ftdi_context *ftdi, int verbose);
	509
	510	int ftdi_get_eeprom_value(struct ftdi_context ftdi, enum ftdi_eeprom_value value_name, int value);
	511	int ftdi_set_eeprom_value(struct ftdi_context *ftdi, enum ftdi_eeprom_value value_name, int value);
	512
	513	int ftdi_get_eeprom_buf(struct ftdi_context ftdi, unsigned char buf, int size);
	514	int ftdi_set_eeprom_buf(struct ftdi_context ftdi, const unsigned char buf, int size);
	515
	516	int ftdi_read_eeprom(struct ftdi_context *ftdi);
	517	int ftdi_read_chipid(struct ftdi_context ftdi, unsigned int chipid);
	518	int ftdi_write_eeprom(struct ftdi_context *ftdi);
	519	int ftdi_erase_eeprom(struct ftdi_context *ftdi);
	520
	521	int ftdi_read_eeprom_location (struct ftdi_context ftdi, int eeprom_addr, unsigned short eeprom_val);
	522	int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr, unsigned short eeprom_val);
	523
	524	char ftdi_get_error_string(struct ftdi_context ftdi);
	525
	526	#ifdef __cplusplus
	527	}
	528	#endif
	529
	530	#endif /* __libftdi_h__ */