Hi,

all the CBUS pins are programmable through FT_PROG, https://ftdichip.com/wp-content/uploads/2020/08/AN_124_User_Guide_For_FT_PROG.pdf. Section 2.4 of the FT232H datasheet shows the ACBUS signal options https://ftdichip.com/wp-content/uploads/2020/07/DS_FT232H.pdf.

however, they can only be controlled when the device is in UART mode.

Best Regards,

FTDI Community

Hello,

LibMPSSE can't be used with UMFT201XB as the FT201X does not have an MPSSE Engine inside.

FT232H, FT2232H and FT4232H can be used with LibMPSSE.
Note that these can be I2C masters only.

FT201X can only be an I2C slave.

You may be interested in AN_255_USB to I2C Example using the FT232H and FT201X devices.
The software can be downloaded here:
https://ftdichip.com/wp-content/uploads/2020/07/AN_255-Files.zip

Best Regards,
FTDI Community

Hello,

what version of Linux are you using? our Linux VCP drivers can be downloaded from our website https://ftdichip.com/drivers/vcp-drivers/.

are you sure that the FT4232H mini module being powered correctly? depending on the power configuration you are using, there are some external connections needed. Section 3 of the module datasheet explains this https://ftdichip.com/wp-content/uploads/2020/07/DS_FT4232H_Mini_Module.pdf.

Best Regards,

FTDI Community.

Hi,
What version of LibMPSSE are you using?  The latest version of libMPSSE is v0.6:
https://ftdichip.com/software-examples/mpsse-projects/libmpsse-spi-examples/

You could add debug commands to try and figure out where the delays are, Another option is not to use libMPSSE and use the d2xx drivers direct:

To use I2C/SPI as a master, see AN_135 - MPSSE Basics and our existing MPSSE Example projects:
https://ftdichip.com/wp-content/uploads/2020/08/AN_135_MPSSE_Basics.pdf
https://ftdichip.com/software-examples/mpsse-projects/

There are two options to use I2C/SPI modes with the MPSSE engine:
 
a.   Use LibMPSSE libraries. Example code is provided with the download.
b.   Use D2XX drivers direct.  AN_108 provides the necessary information
https://ftdichip.com/wp-content/uploads/2020/08/AN_108_Command_Processor_for_MPSSE_and_MCU_Host_Bus_Emulation_Modes.pdf

Regards
FTDI Community 

Hello,

It sounds like there are hardware issues with your custom PCB.

Details on PWREN#:

Active low power-enable output.
PWREN# = 0: Normal operation.
PWREN# =1: USB SUSPEND mode or device has not been configured.

Please contact your local support office and we can review your schematics:

https://ftdichip.com/technical-support/

We do also have FT2232H based hardware that you can use for test, evaluation and reference.
Scroll down to products found here:

https://ftdichip.com/?s=ft2232h&post_type=product

Best Regards,
FTDI Community

Hello,

To use I2C/SPI as a master, see AN_135 MPSSE Basics and our existing MPSSE Example projects:
 
https://ftdichip.com/software-examples/mpsse-projects/
 
There are two options to use I2C/SPI modes with the MPSSE engine:
 
a.            Use LibMPSSE libraries. Example code is provided with the download.
b.            Use D2XX drivers direct. Example code is shown at I2C/SPI.
AN_108 Command Processor For MPSSE and MCU Host Bus Emulation Modes provides the necessary information.
 
Option b is the best option to use the D2XX drivers direct (no dependency on libMPSSE library).

Unfortunately in option b above, we only have C++, Delphi and VB examples.
There is a C# example for I2C which you could use for reference.

We do have a C# wrapper which you could use to develop your own software:

https://ftdichip.com/software-examples/code-examples/csharp-examples/

Best Regards,
FTDI Community

Hello,

Please see the following document: https://ftdichip.com/wp-content/uploads/2020/08/AN_159-Vinculum-II-Firmware-Flash-Programming.pdf.

this explains how the device can be flashed. Section 2 covers the IDE tool suite and section 3 explains how to program via the debugger interface.

This document will also to helpful to you: https://ftdichip.com/wp-content/uploads/2020/08/AN_138_Vinculum-II_Debug_Interface_Description.pdf.

This application note is dedicated to the description of the debug interface.

Here is some more useful documentation for you:

https://ftdichip.com/wp-content/uploads/2020/08/AN_137_Vinculum-II-IO_Cell_Description.pdf

https://ftdichip.com/wp-content/uploads/2020/08/AN_142_Vinculum-II_Tool_Chain_Getting_Started_Guide.pdf

https://ftdichip.com/wp-content/uploads/2020/08/AN_144_Vinculum-II_IO_Mux_Config_Utility_User_Guide.pdf

Best Regards

FTDI Community

Hello,

FTDI’s Mac OS X10.15 and macOS 11/12 VCP driver can change the latency timer but you will need to edit the info.plist but this means that the driver would need to be resigned as driver signing is enforced on macOS:

https://ftdichip.com/drivers/vcp-drivers/

See TN_105 Adding Support for New FTDI Devices to Mac Driver.

Signing requires you to join the Apple Dev program and applying for a signing certificate.

The other alternative for MacOS is to use the D2XX drivers. See the Mac OS X Installation Guide and the D2XX Programmer’s Guide and the FT_SetLatencyTimer API.
Example d2xx code is provided with the d2xx driver download.

Best Regards,
FTDI Community