ftdi.c - Man Page

Synopsis

#include <libusb.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include 'ftdi_i.h'
#include 'ftdi.h'
#include 'ftdi_version_i.h'

Macros

#define ftdi_error_return(code,  str)
#define ftdi_error_return_free_device_list(code,  str,  devs)
#define H_CLK   120000000
#define C_CLK   48000000
#define MAGIC   0x55aa

Functions

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, libusb_device_handle *usb)
struct ftdi_version_info ftdi_get_library_version (void)
Get libftdi 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_get_strings2 (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_dev (struct ftdi_context *ftdi, libusb_device *dev)
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_bus_addr (struct ftdi_context *ftdi, uint8_t bus, uint8_t addr)
int ftdi_usb_open_string (struct ftdi_context *ftdi, const char *description)
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_usb_close (struct ftdi_context *ftdi)
int convert_baudrate_UT_export (int baudrate, struct ftdi_context *ftdi, unsigned short *value, unsigned short *index)
Wrapper function to export ftdi_convert_baudrate() to the unit test Do not use, it's only for the unit test framework.
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_write_data (struct ftdi_context *ftdi, const unsigned char *buf, int size)
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)
void ftdi_transfer_data_cancel (struct ftdi_transfer_control *tc, struct timeval *to)
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_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_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)
int ftdi_setflowctrl (struct ftdi_context *ftdi, int flowctrl)
int ftdi_setdtr (struct ftdi_context *ftdi, int state)
int ftdi_setrts (struct ftdi_context *ftdi, int state)
int ftdi_setdtr_rts (struct ftdi_context *ftdi, int dtr, int rts)
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)
int ftdi_eeprom_initdefaults (struct ftdi_context *ftdi, char *manufacturer, char *product, char *serial)
int ftdi_eeprom_set_strings (struct ftdi_context *ftdi, char *manufacturer, char *product, char *serial)
int ftdi_eeprom_get_strings (struct ftdi_context *ftdi, char *manufacturer, int mnf_len, char *product, int prod_len, char *serial, int serial_len)
void set_ft232h_cbus (struct ftdi_eeprom *eeprom, unsigned char *output)
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_set_eeprom_user_data (struct ftdi_context *ftdi, const char *buf, int size)
int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsigned short *eeprom_val)
int ftdi_read_eeprom (struct ftdi_context *ftdi)
int ftdi_read_chipid (struct ftdi_context *ftdi, unsigned int *chipid)
int ftdi_write_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsigned short eeprom_val)
int ftdi_write_eeprom (struct ftdi_context *ftdi)
int ftdi_erase_eeprom (struct ftdi_context *ftdi)
const char * ftdi_get_error_string (struct ftdi_context *ftdi)

Macro Definition Documentation

#define ftdi_error_return(code, str)

Value:

        do {          if ( ftdi )                                    ftdi->error_str = str;                 else                                           fprintf(stderr, str);                  return code;                          } while(0);

Definition at line 42 of file ftdi.c.

#define ftdi_error_return_free_device_list(code, str, devs)

Value:

        do {            libusb_free_device_list(devs,1);           ftdi->error_str = str;                     return code;                          } while(0);

Definition at line 50 of file ftdi.c.

#define H_CLK   120000000

#define C_CLK   48000000

#define MAGIC   0x55aa

Erase eeprom

This is not supported on FT232R/FT245R according to the MProg manual from FTDI.

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 erase failed
-2 USB device unavailable
-3 Writing magic failed
-4 Read EEPROM failed
-5 Unexpected EEPROM value

Definition at line 4532 of file ftdi.c.

Function Documentation

int ftdi_init (struct ftdi_context * ftdi)

Initializes a ftdi_context.

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 couldn't allocate read buffer
-2 couldn't allocate struct buffer
-3 libusb_init() failed

Remarks

This should be called before all functions

Definition at line 88 of file ftdi.c.

References AUTO_DETACH_SIO_MODULE, ftdi_context::baudrate, ftdi_context::bitbang_enabled, ftdi_context::bitbang_mode, ftdi_context::eeprom, ftdi_context::error_str, ftdi_error_return, ftdi_read_data_set_chunksize(), ftdi_set_interface(), INTERFACE_ANY, ftdi_context::max_packet_size, ftdi_context::module_detach_mode, ftdi_context::readbuffer, ftdi_context::readbuffer_offset, ftdi_context::readbuffer_remaining, ftdi_context::type, TYPE_BM, ftdi_context::usb_ctx, ftdi_context::usb_dev, ftdi_context::usb_read_timeout, ftdi_context::usb_write_timeout, and ftdi_context::writebuffer_chunksize.

Referenced by ftdi_new().

struct ftdi_context* ftdi_new (void)

Allocate and initialize a new ftdi_context

Returns

a pointer to a new ftdi_context, or NULL on failure

Definition at line 128 of file ftdi.c.

References ftdi_init().

int ftdi_set_interface (struct ftdi_context * ftdi, enum ftdi_interface interface)

Open selected channels on a chip, otherwise use first channel.

Parameters

ftdi pointer to ftdi_context
interface Interface to use for FT2232C/2232H/4232H chips.

Return values

0 all fine
-1 unknown interface
-2 USB device unavailable
-3 Device already open, interface can't be set in that state

Definition at line 157 of file ftdi.c.

References ftdi_error_return, ftdi_context::in_ep, ftdi_context::index, ftdi_context::interface, INTERFACE_A, INTERFACE_ANY, INTERFACE_B, INTERFACE_C, INTERFACE_D, ftdi_context::out_ep, and ftdi_context::usb_dev.

Referenced by ftdi_init().

void ftdi_deinit (struct ftdi_context * ftdi)

Deinitializes a ftdi_context.

Parameters

ftdi pointer to ftdi_context

Definition at line 210 of file ftdi.c.

Referenced by ftdi_free().

void ftdi_free (struct ftdi_context * ftdi)

Deinitialize and free an ftdi_context.

Parameters

ftdi pointer to ftdi_context

Definition at line 256 of file ftdi.c.

References ftdi_deinit().

Referenced by Ftdi::Context::serial().

void ftdi_set_usbdev (struct ftdi_context * ftdi, libusb_device_handle * usb)

Use an already open libusb device.

Parameters

ftdi pointer to ftdi_context
usb libusb libusb_device_handle to use

Definition at line 268 of file ftdi.c.

References ftdi_context::usb_dev.

Referenced by Ftdi::Context::set_interface().

struct ftdi_version_info ftdi_get_library_version (void)

Get libftdi library version.

Returns

ftdi_version_info Library version information

Definition at line 268 of file ftdi.c.

int ftdi_usb_find_all (struct ftdi_context * ftdi, struct ftdi_device_list ** devlist, int vendor, int product)

Finds all ftdi devices with given VID:PID on the usb bus. Creates a new ftdi_device_list which needs to be deallocated by ftdi_list_free() after use. With VID:PID 0:0, search for the default devices (0x403:0x6001, 0x403:0x6010, 0x403:0x6011, 0x403:0x6014, 0x403:0x6015)

Parameters

ftdi pointer to ftdi_context
devlist Pointer where to store list of found devices
vendor Vendor ID to search for
product Product ID to search for

Return values

>0 number of devices found
-3 out of memory
-5 libusb_get_device_list() failed
-6 libusb_get_device_descriptor() failed

Definition at line 310 of file ftdi.c.

References ftdi_device_list::dev, ftdi_error_return, ftdi_error_return_free_device_list, ftdi_device_list::next, and ftdi_context::usb_ctx.

Referenced by Ftdi::List::erase().

void ftdi_list_free (struct ftdi_device_list ** devlist)

Frees a usb device list.

Parameters

devlist USB device list created by ftdi_usb_find_all()

Definition at line 358 of file ftdi.c.

References ftdi_device_list::dev, and ftdi_device_list::next.

Referenced by Ftdi::List::clear(), and ftdi_list_free2().

void ftdi_list_free2 (struct ftdi_device_list * devlist)

Frees a usb device list.

Parameters

devlist USB device list created by ftdi_usb_find_all()

Definition at line 378 of file ftdi.c.

References ftdi_list_free().

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)

Return device ID strings from the usb device.

The parameters manufacturer, description and serial may be NULL or pointer to buffers to store the fetched strings.

Note

Use this function only in combination with ftdi_usb_find_all() as it closes the internal 'usb_dev' after use.

Parameters

ftdi pointer to ftdi_context
dev libusb usb_dev to use
manufacturer Store manufacturer string here if not NULL
mnf_len Buffer size of manufacturer string
description Store product description string here if not NULL
desc_len Buffer size of product description string
serial Store serial string here if not NULL
serial_len Buffer size of serial string

Return values

0 all fine
-1 wrong arguments
-4 unable to open device
-7 get product manufacturer failed
-8 get product description failed
-9 get serial number failed
-11 libusb_get_device_descriptor() failed

Definition at line 409 of file ftdi.c.

References ftdi_device_list::dev, ftdi_error_return, ftdi_usb_get_strings2(), and ftdi_context::usb_dev.

Referenced by Ftdi::Context::error_string().

int ftdi_usb_get_strings2 (struct ftdi_context * ftdi, struct libusb_device * dev, char * manufacturer, int mnf_len, char * description, int desc_len, char * serial, int serial_len)

Return device ID strings from the usb device.

The parameters manufacturer, description and serial may be NULL or pointer to buffers to store the fetched strings.

Note

The old function ftdi_usb_get_strings() always closes the device. This version only closes the device if it was opened by it.

Parameters

ftdi pointer to ftdi_context
dev libusb usb_dev to use
manufacturer Store manufacturer string here if not NULL
mnf_len Buffer size of manufacturer string
description Store product description string here if not NULL
desc_len Buffer size of product description string
serial Store serial string here if not NULL
serial_len Buffer size of serial string

Return values

0 all fine
-1 wrong arguments
-4 unable to open device
-7 get product manufacturer failed
-8 get product description failed
-9 get serial number failed
-11 libusb_get_device_descriptor() failed

Definition at line 466 of file ftdi.c.

References ftdi_error_return, and ftdi_context::usb_dev.

Referenced by ftdi_usb_get_strings().

int ftdi_usb_open_dev (struct ftdi_context * ftdi, libusb_device * dev)

Opens a ftdi device given by an usb_device.

Parameters

ftdi pointer to ftdi_context
dev libusb usb_dev to use

Return values

0 all fine
-3 unable to config device
-4 unable to open device
-5 unable to claim device
-6 reset failed
-7 set baudrate failed
-8 ftdi context invalid
-9 libusb_get_device_descriptor() failed
-10 libusb_get_config_descriptor() failed
-11 libusb_detach_kernel_driver() failed
-12 libusb_get_configuration() failed

Definition at line 585 of file ftdi.c.

References AUTO_DETACH_SIO_MODULE, ftdi_error_return, ftdi_context::interface, ftdi_context::module_detach_mode, and ftdi_context::usb_dev.

Referenced by ftdi_usb_open_bus_addr(), and ftdi_usb_open_string().

int ftdi_usb_open (struct ftdi_context * ftdi, int vendor, int product)

Opens the first device with a given vendor and product ids.

Parameters

ftdi pointer to ftdi_context
vendor Vendor ID
product Product ID

Return values

same as ftdi_usb_open_desc()

Definition at line 698 of file ftdi.c.

References ftdi_usb_open_desc().

Referenced by Ftdi::Context::is_open().

int ftdi_usb_open_desc (struct ftdi_context * ftdi, int vendor, int product, const char * description, const char * serial)

Opens the first device with a given, vendor id, product id, description and serial.

Parameters

ftdi pointer to ftdi_context
vendor Vendor ID
product Product ID
description Description to search for. Use NULL if not needed.
serial Serial to search for. Use NULL if not needed.

Return values

0 all fine
-3 usb device not found
-4 unable to open device
-5 unable to claim device
-6 reset failed
-7 set baudrate failed
-8 get product description failed
-9 get serial number failed
-12 libusb_get_device_list() failed
-13 libusb_get_device_descriptor() failed

Definition at line 724 of file ftdi.c.

References ftdi_usb_open_desc_index().

Referenced by ftdi_usb_open().

int ftdi_usb_open_desc_index (struct ftdi_context * ftdi, int vendor, int product, const char * description, const char * serial, unsigned int index)

Opens the index-th device with a given, vendor id, product id, description and serial.

Parameters

ftdi pointer to ftdi_context
vendor Vendor ID
product Product ID
description Description to search for. Use NULL if not needed.
serial Serial to search for. Use NULL if not needed.
index Number of matching device to open if there are more than one, starts with 0.

Return values

0 all fine
-1 usb_find_busses() failed
-2 usb_find_devices() failed
-3 usb device not found
-4 unable to open device
-5 unable to claim device
-6 reset failed
-7 set baudrate failed
-8 get product description failed
-9 get serial number failed
-10 unable to close device
-11 ftdi context invalid
-12 libusb_get_device_list() failed

Definition at line 755 of file ftdi.c.

References ftdi_error_return, ftdi_error_return_free_device_list, ftdi_context::usb_ctx, and ftdi_context::usb_dev.

Referenced by ftdi_usb_open_desc(), and ftdi_usb_open_string().

int ftdi_usb_open_bus_addr (struct ftdi_context * ftdi, uint8_t bus, uint8_t addr)

Opens the device at a given USB bus and device address.

Parameters

ftdi pointer to ftdi_context
bus Bus number
addr Device address

Return values

0 all fine
-1 usb_find_busses() failed
-2 usb_find_devices() failed
-3 usb device not found
-4 unable to open device
-5 unable to claim device
-6 reset failed
-7 set baudrate failed
-8 get product description failed
-9 get serial number failed
-10 unable to close device
-11 ftdi context invalid
-12 libusb_get_device_list() failed

Definition at line 848 of file ftdi.c.

References ftdi_error_return, ftdi_error_return_free_device_list, ftdi_usb_open_dev(), and ftdi_context::usb_ctx.

int ftdi_usb_open_string (struct ftdi_context * ftdi, const char * description)

Opens the ftdi-device described by a description-string. Intended to be used for parsing a device-description given as commandline argument.

Parameters

ftdi pointer to ftdi_context
description NULL-terminated description-string, using this format:

  • d:<devicenode> path of bus and device-node (e.g. '003/001') within usb device tree (usually at /proc/bus/usb/)
  • i:<vendor>:<product> first device with given vendor and product id, ids can be decimal, octal (preceded by '0') or hex (preceded by '0x')
  • i:<vendor>:<product>:<index> as above with index being the number of the device (starting with 0) if there are more than one
  • s:<vendor>:<product>:<serial> first device with given vendor id, product id and serial string
Note

The description format may be extended in later versions.

Return values

0 all fine
-2 libusb_get_device_list() failed
-3 usb device not found
-4 unable to open device
-5 unable to claim device
-6 reset failed
-7 set baudrate failed
-8 get product description failed
-9 get serial number failed
-10 unable to close device
-11 illegal description format
-12 ftdi context invalid

Definition at line 901 of file ftdi.c.

References ftdi_error_return, ftdi_error_return_free_device_list, ftdi_usb_open_desc_index(), ftdi_usb_open_dev(), and ftdi_context::usb_ctx.

int ftdi_usb_reset (struct ftdi_context * ftdi)

Resets the ftdi device.

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 FTDI reset failed
-2 USB device unavailable

Definition at line 994 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, ftdi_context::readbuffer_offset, ftdi_context::readbuffer_remaining, SIO_RESET_REQUEST, SIO_RESET_SIO, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by Ftdi::Context::close(), and ftdi_write_eeprom().

int ftdi_usb_purge_rx_buffer (struct ftdi_context * ftdi)

Clears the read buffer on the chip and the internal read buffer.

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 read buffer purge failed
-2 USB device unavailable

Definition at line 1020 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, ftdi_context::readbuffer_offset, ftdi_context::readbuffer_remaining, SIO_RESET_PURGE_RX, SIO_RESET_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by ftdi_usb_purge_buffers().

int ftdi_usb_purge_tx_buffer (struct ftdi_context * ftdi)

Clears the write buffer on the chip.

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 write buffer purge failed
-2 USB device unavailable

Definition at line 1046 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_RESET_PURGE_TX, SIO_RESET_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by ftdi_usb_purge_buffers().

int ftdi_usb_purge_buffers (struct ftdi_context * ftdi)

Clears the buffers on the chip and the internal read buffer.

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 read buffer purge failed
-2 write buffer purge failed
-3 USB device unavailable

Definition at line 1069 of file ftdi.c.

References ftdi_error_return, ftdi_usb_purge_rx_buffer(), ftdi_usb_purge_tx_buffer(), and ftdi_context::usb_dev.

Referenced by ftdi_readstream().

int ftdi_usb_close (struct ftdi_context * ftdi)

Closes the ftdi device. Call ftdi_deinit() if you're cleaning up.

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 usb_release failed
-3 ftdi context invalid

Definition at line 1098 of file ftdi.c.

References ftdi_error_return, ftdi_context::interface, and ftdi_context::usb_dev.

int convert_baudrate_UT_export (int baudrate, struct ftdi_context * ftdi, unsigned short * value, unsigned short * index)

Wrapper function to export ftdi_convert_baudrate() to the unit test Do not use, it's only for the unit test framework.

Definition at line 1332 of file ftdi.c.

int ftdi_set_baudrate (struct ftdi_context * ftdi, int baudrate)

Sets the chip baud rate

Parameters

ftdi pointer to ftdi_context
baudrate baud rate to set

Return values

0 all fine
-1 invalid baudrate
-2 setting baudrate failed
-3 USB device unavailable

Definition at line 1349 of file ftdi.c.

References ftdi_context::bitbang_enabled, ftdi_error_return, and ftdi_context::usb_dev.

Referenced by Ftdi::Context::set_usb_device().

int ftdi_set_line_property (struct ftdi_context * ftdi, enum ftdi_bits_type bits, enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity)

Set (RS232) line characteristics. The break type can only be set via ftdi_set_line_property2() and defaults to 'off'.

Parameters

ftdi pointer to ftdi_context
bits Number of bits
sbit Number of stop bits
parity Parity mode

Return values

0 all fine
-1 Setting line property failed

Definition at line 1395 of file ftdi.c.

References BREAK_OFF, and ftdi_set_line_property2().

Referenced by Ftdi::Context::set_baud_rate().

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)

Set (RS232) line characteristics

Parameters

ftdi pointer to ftdi_context
bits Number of bits
sbit Number of stop bits
parity Parity mode
break_type Break type

Return values

0 all fine
-1 Setting line property failed
-2 USB device unavailable

Definition at line 1414 of file ftdi.c.

References BREAK_OFF, BREAK_ON, EVEN, FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, MARK, NONE, ODD, SIO_SET_DATA_REQUEST, SPACE, STOP_BIT_1, STOP_BIT_15, STOP_BIT_2, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by ftdi_set_line_property(), and Ftdi::Context::set_line_property().

int ftdi_write_data (struct ftdi_context * ftdi, const unsigned char * buf, int size)

Writes data in chunks (see ftdi_write_data_set_chunksize()) to the chip

Parameters

ftdi pointer to ftdi_context
buf Buffer with the data
size Size of the buffer

Return values

-666 USB device unavailable
<0 error code from usb_bulk_write()
>0 number of bytes written

Definition at line 1484 of file ftdi.c.

References ftdi_error_return, ftdi_context::in_ep, ftdi_context::usb_dev, ftdi_context::usb_write_timeout, and ftdi_context::writebuffer_chunksize.

struct ftdi_transfer_control* ftdi_write_data_submit (struct ftdi_context * ftdi, unsigned char * buf, int size)

Writes data to the chip. Does not wait for completion of the transfer nor does it make sure that the transfer was successful.

Use libusb 1.0 asynchronous API.

Parameters

ftdi pointer to ftdi_context
buf Buffer with the data
size Size of the buffer

Return values

NULL Some error happens when submit transfer
!NULL Pointer to a ftdi_transfer_control

Definition at line 1644 of file ftdi.c.

References ftdi_transfer_control::buf, ftdi_transfer_control::completed, ftdi_transfer_control::ftdi, ftdi_context::in_ep, ftdi_transfer_control::offset, ftdi_transfer_control::size, ftdi_transfer_control::transfer, ftdi_context::usb_dev, and ftdi_context::writebuffer_chunksize.

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

Reads data from the chip. Does not wait for completion of the transfer nor does it make sure that the transfer was successful.

Use libusb 1.0 asynchronous API.

Parameters

ftdi pointer to ftdi_context
buf Buffer with the data
size Size of the buffer

Return values

NULL Some error happens when submit transfer
!NULL Pointer to a ftdi_transfer_control

Definition at line 1706 of file ftdi.c.

References ftdi_transfer_control::buf, ftdi_transfer_control::completed, ftdi_transfer_control::ftdi, ftdi_transfer_control::offset, ftdi_context::out_ep, ftdi_context::readbuffer, ftdi_context::readbuffer_chunksize, ftdi_context::readbuffer_offset, ftdi_context::readbuffer_remaining, ftdi_transfer_control::size, ftdi_transfer_control::transfer, and ftdi_context::usb_dev.

int ftdi_transfer_data_done (struct ftdi_transfer_control * tc)

Wait for completion of the transfer.

Use libusb 1.0 asynchronous API.

Parameters

tc pointer to ftdi_transfer_control

Return values

< 0: Some error happens
>= 0: Data size transferred

tc->transfer could be NULL if '(size <= ftdi->readbuffer_remaining)' at ftdi_read_data_submit(). Therefore, we need to check it here.

Definition at line 1785 of file ftdi.c.

References ftdi_transfer_control::completed, ftdi_transfer_control::ftdi, ftdi_transfer_control::offset, ftdi_transfer_control::transfer, and ftdi_context::usb_ctx.

void ftdi_transfer_data_cancel (struct ftdi_transfer_control * tc, struct timeval * to)

Cancel transfer and wait for completion.

Use libusb 1.0 asynchronous API.

Parameters

tc pointer to ftdi_transfer_control
to pointer to timeout value or NULL for infinite

Definition at line 1832 of file ftdi.c.

References ftdi_transfer_control::completed, ftdi_transfer_control::ftdi, ftdi_transfer_control::transfer, and ftdi_context::usb_ctx.

int ftdi_write_data_set_chunksize (struct ftdi_context * ftdi, unsigned int chunksize)

Configure write buffer chunk size. Default is 4096.

Parameters

ftdi pointer to ftdi_context
chunksize Chunk size

Return values

0 all fine
-1 ftdi context invalid

Definition at line 1866 of file ftdi.c.

References ftdi_error_return, and ftdi_context::writebuffer_chunksize.

Referenced by Ftdi::Context::write().

int ftdi_write_data_get_chunksize (struct ftdi_context * ftdi, unsigned int * chunksize)

Get write buffer chunk size.

Parameters

ftdi pointer to ftdi_context
chunksize Pointer to store chunk size in

Return values

0 all fine
-1 ftdi context invalid

Definition at line 1884 of file ftdi.c.

References ftdi_error_return, and ftdi_context::writebuffer_chunksize.

Referenced by Ftdi::Context::set_write_chunk_size().

int ftdi_read_data (struct ftdi_context * ftdi, unsigned char * buf, int size)

Reads data in chunks (see ftdi_read_data_set_chunksize()) from the chip.

Automatically strips the two modem status bytes transfered during every read.

Parameters

ftdi pointer to ftdi_context
buf Buffer to store data in
size Size of the buffer

Return values

-666 USB device unavailable
<0 error code from libusb_bulk_transfer()
0 no data was available
>0 number of bytes read

Definition at line 1908 of file ftdi.c.

References ftdi_error_return, ftdi_context::max_packet_size, ftdi_context::out_ep, ftdi_context::readbuffer, ftdi_context::readbuffer_chunksize, ftdi_context::readbuffer_offset, ftdi_context::readbuffer_remaining, ftdi_context::usb_dev, and ftdi_context::usb_read_timeout.

Referenced by Ftdi::Context::set_usb_write_timeout().

int ftdi_read_data_set_chunksize (struct ftdi_context * ftdi, unsigned int chunksize)

Configure read buffer chunk size. Default is 4096.

Automatically reallocates the buffer.

Parameters

ftdi pointer to ftdi_context
chunksize Chunk size

Return values

0 all fine
-1 ftdi context invalid

Definition at line 2033 of file ftdi.c.

References ftdi_error_return, ftdi_context::readbuffer, ftdi_context::readbuffer_chunksize, ftdi_context::readbuffer_offset, and ftdi_context::readbuffer_remaining.

Referenced by ftdi_init(), and Ftdi::Context::read().

int ftdi_read_data_get_chunksize (struct ftdi_context * ftdi, unsigned int * chunksize)

Get read buffer chunk size.

Parameters

ftdi pointer to ftdi_context
chunksize Pointer to store chunk size in

Return values

0 all fine
-1 FTDI context invalid

Definition at line 2070 of file ftdi.c.

References ftdi_error_return, and ftdi_context::readbuffer_chunksize.

Referenced by Ftdi::Context::set_read_chunk_size().

int ftdi_set_bitmode (struct ftdi_context * ftdi, unsigned char bitmask, unsigned char mode)

Enable/disable bitbang modes.

Parameters

ftdi pointer to ftdi_context
bitmask Bitmask to configure lines. HIGH/ON value configures a line as output.
mode Bitbang mode: use the values defined in ftdi_mpsse_mode

Return values

0 all fine
-1 can't enable bitbang mode
-2 USB device unavailable

Definition at line 2091 of file ftdi.c.

References ftdi_context::bitbang_enabled, ftdi_context::bitbang_mode, BITMODE_RESET, FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_SET_BITMODE_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by ftdi_readstream(), Ftdi::Context::set_bitmode(), and Ftdi::Context::set_error_char().

int ftdi_disable_bitbang (struct ftdi_context * ftdi)

Disable bitbang mode.

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 can't disable bitbang mode
-2 USB device unavailable

Definition at line 2117 of file ftdi.c.

References ftdi_context::bitbang_enabled, FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_SET_BITMODE_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by Ftdi::Context::set_bitmode().

int ftdi_read_pins (struct ftdi_context * ftdi, unsigned char * pins)

Directly read pin state, circumventing the read buffer. Useful for bitbang mode.

Parameters

ftdi pointer to ftdi_context
pins Pointer to store pins into

Return values

0 all fine
-1 read pins failed
-2 USB device unavailable

Definition at line 2140 of file ftdi.c.

References FTDI_DEVICE_IN_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_READ_PINS_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_read_timeout.

Referenced by Ftdi::Context::bitbang_disable().

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

Set latency timer

The FTDI chip keeps data in the internal buffer for a specific amount of time if the buffer is not full yet to decrease load on the usb bus.

Parameters

ftdi pointer to ftdi_context
latency Value between 1 and 255

Return values

0 all fine
-1 latency out of range
-2 unable to set latency timer
-3 USB device unavailable

Definition at line 2166 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_SET_LATENCY_TIMER_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by ftdi_write_eeprom(), and Ftdi::Context::set_rts().

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

Get latency timer

Parameters

ftdi pointer to ftdi_context
latency Pointer to store latency value in

Return values

0 all fine
-1 unable to get latency timer
-2 USB device unavailable

Definition at line 2193 of file ftdi.c.

References FTDI_DEVICE_IN_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_GET_LATENCY_TIMER_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_read_timeout.

Referenced by Ftdi::Context::set_latency().

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

Poll modem status information

This function allows the retrieve the two status bytes of the device. The device sends these bytes also as a header for each read access where they are discarded by ftdi_read_data(). The chip generates the two stripped status bytes in the absence of data every 40 ms.

Layout of the first byte:

  • B0..B3 - must be 0
  • B4 Clear to send (CTS) 0 = inactive 1 = active
  • B5 Data set ready (DTS) 0 = inactive 1 = active
  • B6 Ring indicator (RI) 0 = inactive 1 = active
  • B7 Receive line signal detect (RLSD) 0 = inactive 1 = active

Layout of the second byte:

  • 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
Parameters

ftdi pointer to ftdi_context
status Pointer to store status information in. Must be two bytes.

Return values

0 all fine
-1 unable to retrieve status information
-2 USB device unavailable

Definition at line 2247 of file ftdi.c.

References FTDI_DEVICE_IN_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_POLL_MODEM_STATUS_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_read_timeout.

Referenced by ftdi_write_eeprom(), and Ftdi::Context::latency().

int ftdi_setflowctrl (struct ftdi_context * ftdi, int flowctrl)

Set flowcontrol for ftdi chip

Parameters

ftdi pointer to ftdi_context
flowctrl flow control to use. should be SIO_DISABLE_FLOW_CTRL, SIO_RTS_CTS_HS, SIO_DTR_DSR_HS or SIO_XON_XOFF_HS

Return values

0 all fine
-1 set flow control failed
-2 USB device unavailable

Definition at line 2273 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_SET_FLOW_CTRL_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

int ftdi_setdtr (struct ftdi_context * ftdi, int state)

Set dtr line

Parameters

ftdi pointer to ftdi_context
state state to set line to (1 or 0)

Return values

0 all fine
-1 set dtr failed
-2 USB device unavailable

Definition at line 2296 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_SET_DTR_HIGH, SIO_SET_DTR_LOW, SIO_SET_MODEM_CTRL_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

int ftdi_setrts (struct ftdi_context * ftdi, int state)

Set rts line

Parameters

ftdi pointer to ftdi_context
state state to set line to (1 or 0)

Return values

0 all fine
-1 set rts failed
-2 USB device unavailable

Definition at line 2326 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_SET_MODEM_CTRL_REQUEST, SIO_SET_RTS_HIGH, SIO_SET_RTS_LOW, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by Ftdi::Context::set_dtr().

int ftdi_setdtr_rts (struct ftdi_context * ftdi, int dtr, int rts)

Set dtr and rts line in one pass

Parameters

ftdi pointer to ftdi_context
dtr DTR state to set line to (1 or 0)
rts RTS state to set line to (1 or 0)

Return values

0 all fine
-1 set dtr/rts failed
-2 USB device unavailable

Definition at line 2357 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_SET_DTR_HIGH, SIO_SET_DTR_LOW, SIO_SET_MODEM_CTRL_REQUEST, SIO_SET_RTS_HIGH, SIO_SET_RTS_LOW, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

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

Set the special event character

Parameters

ftdi pointer to ftdi_context
eventch Event character
enable 0 to disable the event character, non-zero otherwise

Return values

0 all fine
-1 unable to set event character
-2 USB device unavailable

Definition at line 2393 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_SET_EVENT_CHAR_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by Ftdi::Context::poll_modem_status().

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

Set error character

Parameters

ftdi pointer to ftdi_context
errorch Error character
enable 0 to disable the error character, non-zero otherwise

Return values

0 all fine
-1 unable to set error character
-2 USB device unavailable

Definition at line 2422 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_context::index, SIO_SET_ERROR_CHAR_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by Ftdi::Context::set_event_char().

int ftdi_eeprom_initdefaults (struct ftdi_context * ftdi, char * manufacturer, char * product, char * serial)

Init eeprom with default values for the connected device

Parameters

ftdi pointer to ftdi_context
manufacturer String to use as Manufacturer
product String to use as Product description
serial String to use as Serial number description

Return values

0 all fine
-1 No struct ftdi_context
-2 No struct ftdi_eeprom
-3 No connected device or device not yet opened

Definition at line 2452 of file ftdi.c.

References ftdi_eeprom::cbus_function, CBUS_PWREN, CBUS_RXLED, CBUS_SLEEP, CBUS_TXDEN, CBUS_TXLED, CBUSH_TRISTATE, CBUSX_RXLED, CBUSX_SLEEP, CBUSX_TXDEN, CBUSX_TXLED, ftdi_context::eeprom, ftdi_error_return, ftdi_eeprom::manufacturer, ftdi_eeprom::max_power, ftdi_eeprom::product, ftdi_eeprom::product_id, ftdi_eeprom::release_number, ftdi_eeprom::serial, ftdi_eeprom::size, ftdi_context::type, TYPE_2232C, TYPE_2232H, TYPE_230X, TYPE_232H, TYPE_4232H, TYPE_AM, TYPE_BM, TYPE_R, ftdi_context::usb_dev, ftdi_eeprom::usb_version, ftdi_eeprom::use_serial, and ftdi_eeprom::vendor_id.

int ftdi_eeprom_set_strings (struct ftdi_context * ftdi, char * manufacturer, char * product, char * serial)

Definition at line 2600 of file ftdi.c.

References ftdi_context::eeprom, ftdi_error_return, ftdi_eeprom::manufacturer, ftdi_eeprom::product, ftdi_eeprom::serial, ftdi_context::usb_dev, and ftdi_eeprom::use_serial.

int ftdi_eeprom_get_strings (struct ftdi_context * ftdi, char * manufacturer, int mnf_len, char * product, int prod_len, char * serial, int serial_len)

Return device ID strings from the eeprom. Device needs to be connected.

The parameters manufacturer, description and serial may be NULL or pointer to buffers to store the fetched strings.

Parameters

ftdi pointer to ftdi_context
manufacturer Store manufacturer string here if not NULL
mnf_len Buffer size of manufacturer string
product Store product description string here if not NULL
prod_len Buffer size of product description string
serial Store serial string here if not NULL
serial_len Buffer size of serial string

Return values

0 all fine
-1 ftdi context invalid
-2 ftdi eeprom buffer invalid

Definition at line 2666 of file ftdi.c.

References ftdi_context::eeprom, ftdi_error_return, ftdi_eeprom::manufacturer, ftdi_eeprom::product, and ftdi_eeprom::serial.

void set_ft232h_cbus (struct ftdi_eeprom * eeprom, unsigned char * output)

Definition at line 2705 of file ftdi.c.

References ftdi_eeprom::cbus_function, CBUSH_CLK7_5, and CBUSH_TRISTATE.

int ftdi_eeprom_build (struct ftdi_context * ftdi)

Build binary buffer from ftdi_eeprom structure. Output is suitable for ftdi_write_eeprom().

Parameters

ftdi pointer to ftdi_context

Return values

>=0 size of eeprom user area in bytes
-1 eeprom size (128 bytes) exceeded by custom strings
-2 Invalid eeprom or ftdi pointer
-3 Invalid cbus function setting (FIXME: Not in the code?)
-4 Chip doesn't support invert (FIXME: Not in the code?)
-5 Chip doesn't support high current drive (FIXME: Not in the code?)
-6 No connected EEPROM or EEPROM Type unknown

Definition at line 2783 of file ftdi.c.

References ftdi_eeprom::buf, ftdi_eeprom::chip, ftdi_context::eeprom, ftdi_error_return, FTDI_MAX_EEPROM_SIZE, ftdi_eeprom::in_is_isochronous, ftdi_eeprom::is_not_pnp, ftdi_eeprom::manufacturer, ftdi_eeprom::max_power, MAX_POWER_MILLIAMP_PER_UNIT, ftdi_eeprom::out_is_isochronous, ftdi_eeprom::product, ftdi_eeprom::product_id, ftdi_eeprom::release_number, ftdi_eeprom::remote_wakeup, ftdi_eeprom::self_powered, ftdi_eeprom::serial, ftdi_eeprom::size, ftdi_context::type, TYPE_2232C, TYPE_2232H, TYPE_230X, TYPE_232H, TYPE_4232H, TYPE_AM, TYPE_BM, TYPE_R, ftdi_eeprom::usb_version, ftdi_eeprom::use_serial, USE_SERIAL_NUM, ftdi_eeprom::use_usb_version, USE_USB_VERSION_BIT, and ftdi_eeprom::vendor_id.

Referenced by Ftdi::Eeprom::chip_id().

int ftdi_eeprom_decode (struct ftdi_context * ftdi, int verbose)

Decode binary EEPROM image into an ftdi_eeprom structure.

For FT-X devices use AN_201 FT-X MTP memory Configuration to decode.

Parameters

ftdi pointer to ftdi_context
verbose Decode EEPROM on stdout

Return values

0 all fine
-1 something went wrong

FIXME: How to pass size? How to handle size field in ftdi_eeprom? FIXME: Strings are malloc'ed here and should be freed somewhere

Definition at line 3411 of file ftdi.c.

References ftdi_eeprom::buf, ftdi_eeprom::channel_a_type, ftdi_eeprom::chip, ftdi_context::eeprom, ftdi_error_return, ftdi_eeprom::in_is_isochronous, ftdi_eeprom::manufacturer, ftdi_eeprom::max_power, MAX_POWER_MILLIAMP_PER_UNIT, ftdi_eeprom::out_is_isochronous, ftdi_eeprom::product, ftdi_eeprom::product_id, ftdi_eeprom::release_number, ftdi_eeprom::remote_wakeup, ftdi_eeprom::self_powered, ftdi_eeprom::serial, ftdi_eeprom::size, ftdi_eeprom::suspend_pull_downs, ftdi_context::type, TYPE_2232C, TYPE_230X, TYPE_AM, TYPE_BM, ftdi_eeprom::usb_version, ftdi_eeprom::use_serial, USE_SERIAL_NUM, ftdi_eeprom::use_usb_version, USE_USB_VERSION_BIT, and ftdi_eeprom::vendor_id.

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

Get a value from the decoded EEPROM structure

Parameters

ftdi pointer to ftdi_context
value_name Enum of the value to query
value Pointer to store read value

Return values

0 all fine
-1 Value doesn't exist

Definition at line 3841 of file ftdi.c.

References ftdi_eeprom::cbus_function, CBUS_FUNCTION_0, CBUS_FUNCTION_1, CBUS_FUNCTION_2, CBUS_FUNCTION_3, CBUS_FUNCTION_4, CBUS_FUNCTION_5, CBUS_FUNCTION_6, CBUS_FUNCTION_7, CBUS_FUNCTION_8, CBUS_FUNCTION_9, CHANNEL_A_DRIVER, ftdi_eeprom::channel_a_driver, CHANNEL_A_RS485, ftdi_eeprom::channel_a_rs485enable, CHANNEL_A_TYPE, ftdi_eeprom::channel_a_type, CHANNEL_B_DRIVER, ftdi_eeprom::channel_b_driver, CHANNEL_B_RS485, ftdi_eeprom::channel_b_rs485enable, CHANNEL_B_TYPE, ftdi_eeprom::channel_b_type, CHANNEL_C_DRIVER, ftdi_eeprom::channel_c_driver, CHANNEL_C_RS485, ftdi_eeprom::channel_c_rs485enable, CHANNEL_D_DRIVER, ftdi_eeprom::channel_d_driver, CHANNEL_D_RS485, ftdi_eeprom::channel_d_rs485enable, ftdi_eeprom::chip, CHIP_SIZE, CHIP_TYPE, CLOCK_POLARITY, ftdi_eeprom::clock_polarity, DATA_ORDER, ftdi_eeprom::data_order, ftdi_context::eeprom, EXTERNAL_OSCILLATOR, ftdi_eeprom::external_oscillator, FLOW_CONTROL, ftdi_eeprom::flow_control, ftdi_error_return, GROUP0_DRIVE, ftdi_eeprom::group0_drive, GROUP0_SCHMITT, ftdi_eeprom::group0_schmitt, GROUP0_SLEW, ftdi_eeprom::group0_slew, GROUP1_DRIVE, ftdi_eeprom::group1_drive, GROUP1_SCHMITT, ftdi_eeprom::group1_schmitt, GROUP1_SLEW, ftdi_eeprom::group1_slew, GROUP2_DRIVE, ftdi_eeprom::group2_drive, GROUP2_SCHMITT, ftdi_eeprom::group2_schmitt, GROUP2_SLEW, ftdi_eeprom::group2_slew, GROUP3_DRIVE, ftdi_eeprom::group3_drive, GROUP3_SCHMITT, ftdi_eeprom::group3_schmitt, GROUP3_SLEW, ftdi_eeprom::group3_slew, HIGH_CURRENT, ftdi_eeprom::high_current, HIGH_CURRENT_A, ftdi_eeprom::high_current_a, HIGH_CURRENT_B, ftdi_eeprom::high_current_b, IN_IS_ISOCHRONOUS, ftdi_eeprom::in_is_isochronous, INVERT, ftdi_eeprom::invert, IS_NOT_PNP, ftdi_eeprom::is_not_pnp, MAX_POWER, ftdi_eeprom::max_power, OUT_IS_ISOCHRONOUS, ftdi_eeprom::out_is_isochronous, POWER_SAVE, ftdi_eeprom::powersave, PRODUCT_ID, ftdi_eeprom::product_id, RELEASE_NUMBER, ftdi_eeprom::release_number, REMOTE_WAKEUP, ftdi_eeprom::remote_wakeup, SELF_POWERED, ftdi_eeprom::self_powered, ftdi_eeprom::size, SUSPEND_DBUS7, ftdi_eeprom::suspend_dbus7, SUSPEND_PULL_DOWNS, ftdi_eeprom::suspend_pull_downs, USB_VERSION, ftdi_eeprom::usb_version, USE_SERIAL, ftdi_eeprom::use_serial, USE_USB_VERSION, ftdi_eeprom::use_usb_version, VENDOR_ID, and ftdi_eeprom::vendor_id.

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

Set a value in the decoded EEPROM Structure No parameter checking is performed

Parameters

ftdi pointer to ftdi_context
value_name Enum of the value to set
value to set

Return values

0 all fine
-1 Value doesn't exist
-2 Value not user settable

Definition at line 4034 of file ftdi.c.

References ftdi_eeprom::cbus_function, CBUS_FUNCTION_0, CBUS_FUNCTION_1, CBUS_FUNCTION_2, CBUS_FUNCTION_3, CBUS_FUNCTION_4, CBUS_FUNCTION_5, CBUS_FUNCTION_6, CBUS_FUNCTION_7, CBUS_FUNCTION_8, CBUS_FUNCTION_9, CHANNEL_A_DRIVER, ftdi_eeprom::channel_a_driver, CHANNEL_A_RS485, ftdi_eeprom::channel_a_rs485enable, CHANNEL_A_TYPE, ftdi_eeprom::channel_a_type, CHANNEL_B_DRIVER, ftdi_eeprom::channel_b_driver, CHANNEL_B_RS485, ftdi_eeprom::channel_b_rs485enable, CHANNEL_B_TYPE, ftdi_eeprom::channel_b_type, CHANNEL_C_DRIVER, ftdi_eeprom::channel_c_driver, CHANNEL_C_RS485, ftdi_eeprom::channel_c_rs485enable, CHANNEL_D_DRIVER, ftdi_eeprom::channel_d_driver, CHANNEL_D_RS485, ftdi_eeprom::channel_d_rs485enable, ftdi_eeprom::chip, CHIP_SIZE, CHIP_TYPE, CLOCK_POLARITY, ftdi_eeprom::clock_polarity, DATA_ORDER, ftdi_eeprom::data_order, ftdi_context::eeprom, EXTERNAL_OSCILLATOR, ftdi_eeprom::external_oscillator, FLOW_CONTROL, ftdi_eeprom::flow_control, ftdi_error_return, GROUP0_DRIVE, ftdi_eeprom::group0_drive, GROUP0_SCHMITT, ftdi_eeprom::group0_schmitt, GROUP0_SLEW, ftdi_eeprom::group0_slew, GROUP1_DRIVE, ftdi_eeprom::group1_drive, GROUP1_SCHMITT, ftdi_eeprom::group1_schmitt, GROUP1_SLEW, ftdi_eeprom::group1_slew, GROUP2_DRIVE, ftdi_eeprom::group2_drive, GROUP2_SCHMITT, ftdi_eeprom::group2_schmitt, GROUP2_SLEW, ftdi_eeprom::group2_slew, GROUP3_DRIVE, ftdi_eeprom::group3_drive, GROUP3_SCHMITT, ftdi_eeprom::group3_schmitt, GROUP3_SLEW, ftdi_eeprom::group3_slew, HIGH_CURRENT, ftdi_eeprom::high_current, HIGH_CURRENT_A, ftdi_eeprom::high_current_a, HIGH_CURRENT_B, ftdi_eeprom::high_current_b, IN_IS_ISOCHRONOUS, ftdi_eeprom::in_is_isochronous, ftdi_eeprom::initialized_for_connected_device, INVERT, ftdi_eeprom::invert, IS_NOT_PNP, ftdi_eeprom::is_not_pnp, MAX_POWER, ftdi_eeprom::max_power, OUT_IS_ISOCHRONOUS, ftdi_eeprom::out_is_isochronous, POWER_SAVE, ftdi_eeprom::powersave, PRODUCT_ID, ftdi_eeprom::product_id, RELEASE_NUMBER, ftdi_eeprom::release_number, REMOTE_WAKEUP, ftdi_eeprom::remote_wakeup, SELF_POWERED, ftdi_eeprom::self_powered, SUSPEND_DBUS7, ftdi_eeprom::suspend_dbus7, SUSPEND_PULL_DOWNS, ftdi_eeprom::suspend_pull_downs, USB_VERSION, ftdi_eeprom::usb_version, USE_SERIAL, ftdi_eeprom::use_serial, USE_USB_VERSION, ftdi_eeprom::use_usb_version, USER_DATA_ADDR, ftdi_eeprom::user_data_addr, VENDOR_ID, and ftdi_eeprom::vendor_id.

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

Get the read-only buffer to the binary EEPROM content

Parameters

ftdi pointer to ftdi_context
buf buffer to receive EEPROM content
size Size of receiving buffer

Return values

0 All fine
-1 struct ftdi_contxt or ftdi_eeprom missing
-2 Not enough room to store eeprom

Definition at line 4230 of file ftdi.c.

References ftdi_eeprom::buf, ftdi_context::eeprom, ftdi_error_return, FTDI_MAX_EEPROM_SIZE, and ftdi_eeprom::size.

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

Set the EEPROM content from the user-supplied prefilled buffer

Parameters

ftdi pointer to ftdi_context
buf buffer to read EEPROM content
size Size of buffer

Return values

0 All fine
-1 struct ftdi_context or ftdi_eeprom or buf missing

Definition at line 4256 of file ftdi.c.

References ftdi_eeprom::buf, ftdi_context::eeprom, ftdi_error_return, FTDI_MAX_EEPROM_SIZE, and ftdi_eeprom::size.

int ftdi_set_eeprom_user_data (struct ftdi_context * ftdi, const char * buf, int size)

Set the EEPROM user data content from the user-supplied prefilled buffer

Parameters

ftdi pointer to ftdi_context
buf buffer to read EEPROM user data content
size Size of buffer

Return values

0 All fine
-1 struct ftdi_context or ftdi_eeprom or buf missing

Definition at line 4279 of file ftdi.c.

References ftdi_eeprom::buf, ftdi_context::eeprom, ftdi_error_return, ftdi_eeprom::size, ftdi_eeprom::user_data, and ftdi_eeprom::user_data_size.

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

Read eeprom location

Parameters

ftdi pointer to ftdi_context
eeprom_addr Address of eeprom location to be read
eeprom_val Pointer to store read eeprom location

Return values

0 all fine
-1 read failed
-2 USB device unavailable

Definition at line 4300 of file ftdi.c.

References ftdi_eeprom::buf, FTDI_DEVICE_IN_REQTYPE, ftdi_error_return, SIO_READ_EEPROM_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_read_timeout.

Referenced by ftdi_write_eeprom_location(), and Ftdi::Eeprom::write().

int ftdi_read_eeprom (struct ftdi_context * ftdi)

Read eeprom

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 read failed
-2 USB device unavailable

Definition at line 4324 of file ftdi.c.

References ftdi_eeprom::buf, ftdi_context::eeprom, FTDI_DEVICE_IN_REQTYPE, ftdi_error_return, FTDI_MAX_EEPROM_SIZE, SIO_READ_EEPROM_REQUEST, ftdi_eeprom::size, ftdi_context::type, TYPE_R, ftdi_context::usb_dev, and ftdi_context::usb_read_timeout.

Referenced by Ftdi::Eeprom::build().

int ftdi_read_chipid (struct ftdi_context * ftdi, unsigned int * chipid)

Read the FTDIChip-ID from R-type devices

Parameters

ftdi pointer to ftdi_context
chipid Pointer to store FTDIChip-ID

Return values

0 all fine
-1 read failed
-2 USB device unavailable

Definition at line 4383 of file ftdi.c.

References FTDI_DEVICE_IN_REQTYPE, ftdi_error_return, SIO_READ_EEPROM_REQUEST, ftdi_context::usb_dev, and ftdi_context::usb_read_timeout.

Referenced by Ftdi::Eeprom::init_defaults().

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

Write eeprom location

Parameters

ftdi pointer to ftdi_context
eeprom_addr Address of eeprom location to be written
eeprom_val Value to be written

Return values

0 all fine
-1 write failed
-2 USB device unavailable
-3 Invalid access to checksum protected area below 0x80
-4 Device can't access unprotected area
-5 Reading chip type failed

Definition at line 4421 of file ftdi.c.

References FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_read_eeprom_location(), SIO_WRITE_EEPROM_REQUEST, ftdi_context::type, TYPE_2232C, TYPE_2232H, TYPE_232H, TYPE_4232H, TYPE_BM, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by Ftdi::Eeprom::read_location().

int ftdi_write_eeprom (struct ftdi_context * ftdi)

Write eeprom

Parameters

ftdi pointer to ftdi_context

Return values

0 all fine
-1 read failed
-2 USB device unavailable
-3 EEPROM not initialized for the connected device;

Definition at line 4477 of file ftdi.c.

References ftdi_eeprom::buf, ftdi_context::eeprom, FTDI_DEVICE_OUT_REQTYPE, ftdi_error_return, ftdi_poll_modem_status(), ftdi_set_latency_timer(), ftdi_usb_reset(), ftdi_eeprom::initialized_for_connected_device, SIO_WRITE_EEPROM_REQUEST, ftdi_eeprom::size, ftdi_context::type, TYPE_230X, ftdi_context::usb_dev, and ftdi_context::usb_write_timeout.

Referenced by Ftdi::Eeprom::read().

int ftdi_erase_eeprom (struct ftdi_context * ftdi)

Definition at line 4532 of file ftdi.c.

Referenced by Ftdi::Eeprom::write_location().

const char* ftdi_get_error_string (struct ftdi_context * ftdi)

Get string representation for last error code

Parameters

ftdi pointer to ftdi_context

Return values

Pointer to error string

Definition at line 4594 of file ftdi.c.

References ftdi_context::error_str.

Referenced by Ftdi::Context::read_pins().

Author

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Tue May 26 2020 Version 1.4 libftdi1