Hello,

There are a few products which you can consider as a USB to I2C master.

The I2C master devices that we have are as follows.
All will require some form of application code running on the OS to control the device:

Using MPSSE and d2xx:
FT232H
See AN_135 MPSSE Basics. Also MPSSE software examples exist.
UM232H is available for test, evaluation and reference.

Using LibFT4222 and d2xx:
FT4222H
Software examples are provided with the library download.
UMFT4222EV-D is available for test, evaluation and reference.

HID class device
FT260
LibFT260 can be used with Windows, software examples are provided with the LibFT260 library download.
UMFT260EV1A is available for test, evaluation and reference.

Schematics are provided in the modules linked above.

Note that the FT602 is not an appropriate product. This is a UVC video class device with built-in I2C master interface for video device configuration, not for general I2C master usage. It's likely the FT602 is overkill if you are just looking for an USB to I2C master bridge.

Best Regards,
FTDI Community

Hello,

Sorry, FT4222H does not support sending a STOP without reading data.

Best Regards

FTDI Community

Hello,

An updated version of the SP3 patch is now available which fixes all known issues.

Please contact FTDI support to get this version before it's uploaded to the FTDI website!

Best Regards,
FTDI Community

Hi,

What hardware is it you are using exactly?

i ran the example and was able to change the serial number without any issues. You could try using our programming utility FT_PROG to change the serial number as an alternative. it can be found on our website here: https://ftdichip.com/utilities/.

Best Regards

FTDI Community

VNC2 AppWiard in IDE 2.0.2 SP2 and SP3:

Per the VNC2 datasheet, pin-9 is RESET# and pin-10 is PROG# for 48-pin and 64-pin packages.

A bug has been found in the pin definition of pin-9 and pin-10 are swapped in AppWizard of the IDE.
 
This will not currently be fixed in the IDE.

Hello,

Yes you can use FT_PROG to disable the VCP Serial Port as shown in Ports (COM & LPT) in Device Manager:

https://ftdichip.com/utilities/#ft_prog

Note that the two D2xx Ports can't be disabled but they are seen under 'Universal Serial Bus controllers' in Device Manager.
This interface is likely used for JTAG anyway as the d2xx drivers must be used for JTAG operation.

Please take a look at FT_PROG where you should find the option like 'Load D2xx Driver' and if checked would disable the VCP port.

Note that the device should be unplug/replug for the change to take place or click on 'Cycle Ports' in the FT_PROG programming window.

Best Regards,
FTDI Community

Hello,

You have already contacted us via email and we will respond to your request.

Feel free to post any resolution here to help other FTDI community users.

There may also be other FTDI community users who can help you too.

Best Regards,
FTDI Community