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.. include:: defs.rst
Features
--------
Devices
~~~~~~~
* All FTDI device ports (UART, MPSSE) can be used simultaneously.
* SPI and |I2C| SPI support simultaneous GPIO R/W access for all pins that
are not used for SPI/|I2C| feature.
* Several FTDI adapters can be accessed simultaneously from the same Python
runtime instance.
Supported features
~~~~~~~~~~~~~~~~~~
UART
````
Serial port, up to 6 Mbps. PyFtdi_ includes a pyserial_ emulation layer that
offers transparent access to the FTDI serial ports through a pyserial_-
compliant API. The ``serialext`` directory contains a minimal serial terminal
demonstrating the use of this extension, and a dispatcher automatically
selecting the serial backend (pyserial_, PyFtdi_), based on the serial port
name.
See also :ref:`uart-limitations`.
SPI master
``````````
Supported devices:
===== ===== ====== ============================================================
Mode CPol CPha Status
===== ===== ====== ============================================================
0 0 0 Supported on all MPSSE devices
1 0 1 Workaround available for on -H series
2 1 0 Supported on -H series (FT232H_/FT2232H_/FT4232H_/FT4232HA_)
3 1 1 Workaround available for on -H series
===== ===== ====== ============================================================
PyFtdi_ can be used with pyspiflash_ module that demonstrates how to
use the FTDI SPI master with a pure-Python serial flash device driver for
several common devices.
Both Half-duplex (write or read) and full-duplex (synchronous write and read)
communication modes are supported.
Experimental support for non-byte aligned access, where up to 7 trailing bits
can be discarded: no clock pulse is generated for those bits, so that SPI
transfer of non byte-sized can be performed.
See :ref:`spi_wiring` and :ref:`spi_limitations`.
Note: FTDI*232* devices cannot be used as an SPI slave.
|I2C| master
````````````
Supported devices: FT232H_, FT2232H_, FT4232H_, FT4232HA_
For now, only 7-bit addresses are supported.
GPIOs can be used while |I2C| mode is enabled.
The ``i2cscan.py`` script helps to discover which I2C devices are connected to
the FTDI I2C bus. See the :ref:`tools` chapter to locate this tool.
The pyi2cflash_ module demonstrates how to use the FTDI |I2C| master to access
serial EEPROMS.
See :ref:`i2c_wiring` and :ref:`i2c_limitations`.
Note: FTDI*232* devices cannot be used as an |I2C| slave.
JTAG
````
JTAG API is limited to low-level access. It is not intented to be used for
any flashing or debugging purpose, but may be used as a base to perform SoC
tests and boundary scans.
EEPROM
``````
The ``pyftdi/bin/ftconf.py`` script helps to manage the content of the FTDI
companion EEPROM.
Status
~~~~~~
This project is still in beta development stage. PyFtdi_ is developed as an
open-source solution.