Crate libftd2xx

Rust safe wrapper for the FTDI D2XX drivers.

This takes the libftd2xx-ffi C bindings crate and extends it with rust safe wrappers.

Usage

Simply add this crate as a dependency in your Cargo.toml.

[dependencies.libftd2xx]
version = "0.32.5"
# statically link the vendor library, defaults to dynamic if not set
# this will make things "just work" on Linux and Windows
features = ["static"]

This is a basic example to get your started. Check the source code or documentation for more examples.

use libftd2xx::{Ftdi, FtdiCommon};

let mut ft = Ftdi::new()?;
let info = ft.device_info()?;
println!("Device information: {:?}", info);

This crate is just a wrapper around the FTD2XX driver; I2C, SPI, and GPIO examples using the embedded-hal traits can be found in ftdi-embedded-hal.

udev rules

To access the FTDI USB device as a regular user on Linux you need to update the udev rules.

Create a file called /etc/udev/rules.d/99-ftdi.rules with:

SUBSYSTEM=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", MODE="0666"
SUBSYSTEM=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6010", MODE="0666"
SUBSYSTEM=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6011", MODE="0666"
SUBSYSTEM=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6014", MODE="0666"
SUBSYSTEM=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6015", MODE="0666"

Then, reload the rules:

sudo udevadm control --reload-rules
sudo udevadm trigger

Linking

By default this crate with use dynamic linking for the vendor library. Use the static feature flag to enable static linking.

Dynamic Linking on Linux

The shared object libftd2xx.so must exist on your system. See FTDI Drivers Installation Guide for Linux for instructions.

Dynamic Linking on Windows

The FTD2XX DLL must exist on your system PATH. The easiest way to install this is with the vendor provided setup executable.

Static Linking on Linux or Windows

No special considerations are needed, the static library is distributed with permission from FTDI in the libftd2xx-ffi crate.

References

• D2XX Programmers Guide V1.4
• D2XX Drivers Download Page

Troubleshooting

Unknown Device on Linux

Remove the VCP FTDI driver.

sudo rmmod ftdi_sio
sudo rmmod usbserial

See FTDI Drivers Installation Guide for Linux for more details.

Structs

• DeviceInfo
  FTDI device information.
• DeviceStatus
  FTDI device status.
• Eeprom232h
  EEPROM structure for the FT232H.
• Eeprom232r
  EEPROM structure for the FT232R.
• Eeprom2232h
  EEPROM structure for the FT2232H.
• Eeprom4232h
  EEPROM structure for the FT4232H.
• EepromHeader
  FTDI EEPROM header common to all FTDI devices.
• EepromStrings
  EEPROM strings structure.
• EepromStringsError
  EEPROM strings error.
• EepromValueError
  EEPROM value error.
• Ft232h
  FT232H device.
• Ft232r
  FT232R device.
• Ft2232h
  FT2232H device.
• Ft4232h
  FT4232H device.
• Ft4232ha
  FT4232HA device.
• Ftdi
  Generic FTDI device.
• ModemStatus
  FTDI modem status.
• MpsseCmdBuilder
  FTDI Multi-Protocol Synchronous Serial Engine (MPSSE) command builder.
• MpsseSettings
  Initialization settings for the MPSSE.
• Version
  D2XX version structure.

Enums

• BitMode
  BitModes for the FTDI ports.
• BitsPerWord
  Bits per word.
• ByteOrder
  FT1248 byte order.
• Cbus232h
  FT232H CBUS options.
• Cbus232r
  FT232R CBUS options.
• CbusX
  FT X Series CBUS options.
• ClockBits
  Modes for clocking data bits in and out of the FTDI device.
• ClockBitsIn
  Modes for clocking data bits into the FTDI device.
• ClockBitsOut
  Modes for clocking bits out of the FTDI device.
• ClockData
  Modes for clocking data in and out of the FTDI device.
• ClockDataIn
  Modes for clocking data into the FTDI device.
• ClockDataOut
  Modes for clocking data out of the FTDI device.
• ClockPolarity
  FT1248 clock polarity
• DeviceType
  FTDI device types.
• DeviceTypeError
  Device type errors.
• DriveCurrent
  FTDI pin drive currents.
• DriverType
  FTDI driver type.
• FtStatus
  These are the C API error codes.
• MpsseCmd
  MPSSE opcodes.
• Parity
  Serial parity bits.
• Speed
  USB device speed.
• StopBits
  Stop bits.
• TimeoutError
  FTDI timeout errors.

Constants

• FTDI_VID
  FTDI USB vendor id.

Traits

• FtdiCommon
  FTD2XX functions common to all devices.
• FtdiEeprom
  FTDI device-specific EEPROM trait.
• FtdiMpsse
  FTDI Multi-Protocol Synchronous Serial Engine (MPSSE).
• Ftx232hMpsse
  This contains MPSSE commands that are only available on the the FT232H, FT2232H, and FT4232H(A) devices.
• MpsseCmdExecutor
  FTDI MPSSE configurator and executor

Functions

• library_version
  Returns the version of the underlying C library.
• list_devices
  This function returns a device information vector with information about the D2XX devices connected to the system.
• list_devices_fs
  Lists FTDI devices using the Linux file system.
• num_devices
  Returns the number of FTDI devices connected to the system.
• rescanWindows
  Rescan devices on the system.
• set_vid_pidUnix
  A command to include a custom VID and PID combination within the internal device list table.
• vid_pidUnix
  A command to retrieve the current VID and PID combination from within the internal device list table.