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 on: May 27, 2020, 03:42:14 PM 
Started by FTDI Community - Last Post by FTDI Community

Customers using macOS 10.15 Catalina have been experiencing signature issues with FTDI's VCP driver.
The following driver should resolve these issues:


Please let us know if you have any feedback on this driver by either posting here or emailing us at support1@ftdichip.com

Best Regards,
FTDI Community

 on: May 26, 2020, 08:26:08 AM 
Started by nroos - Last Post by nroos
Hello and thanks for the reply,

I have done already what you describe. And what do i have to do next to communicate with a I2C device? Do i have to put the UM232H into I2C mode, or ist the software doing this? Which pins are the I2C pins? Do the pins need external pullups or are they chip-internal and can be controlled by software?

As described, i don't see the complete I2C signals on the pins. I have seen one pin which had some kind of data on it, but there was no I2C clock on any pin, so the data i have seen could just be a RS232 signal or something like that...

Kind regards

 on: May 22, 2020, 02:47:36 PM 
Started by SpicyChef - Last Post by SpicyChef

Thanks to your code I was able to find the problem in mine.

 on: May 21, 2020, 04:42:31 PM 
Started by nroos - Last Post by FTDI Community

To use I2C with FT232H, see AN_135 FTDI MPSSE Basics and our existing MPSSE Example projects:


There are two options to use I2C 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.
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).

Best Regards,
FTDI Community

 on: May 21, 2020, 01:33:56 PM 
Started by kukdh1 - Last Post by FTDI Community

Is there any news about Apple's re-signing of the driver?

Yes, actually we have just managed to re-sign and notarize our VCP driver package for macOS 10.15.
We still need to do a couple things before we can release this online, update release notes, etc.

Best Regards,
FTDI Community

 on: May 20, 2020, 04:43:16 PM 
Started by kukdh1 - Last Post by otherguy
Is there any news about Apple's re-signing of the driver?

 on: May 20, 2020, 04:34:31 PM 
Started by asusrog - Last Post by FTDI Community

Please test in a loopback fashion.

Simply connect TXD to RXD and use a terminal program like PuTTY to send/receive characters.

Note that PuTTY will only show received characters unless your force ON the sent characters (in the settings).

Please also test with our known good hardware which you can also use for reference:


Best Regards,
FTDI Community

 on: May 19, 2020, 07:32:48 AM 
Started by Rudolph - Last Post by Rudolph
I have no idea why this forum is still up and why there is so much posted here.
I am more active over at:  http://www.brtcommunity.com/

That said, I have a code library for FT8xx/BT8xx that could answer a couple of questions that are posted here:

I have examples projects for Arduino, ATSAMC21 and ATSAME51.
My goal is to support all the EVE displays out there, at least these that I can actually get and that are documented.

And I went multi-plattform right from the start, I have support for a whole bunch of micros including AVR, ATSAM, STM32 and RISC-V.

 on: May 19, 2020, 07:15:07 AM 
Started by SpicyChef - Last Post by Rudolph
I have an Arduino example for my driver library: https://github.com/RudolphRiedel/FT800-FT813/tree/4.x/example_projects

The display is selected in EVE_config.h.
And the pins for CS and PD are configured at the end of EVE_target.h.

 on: May 18, 2020, 06:02:35 PM 
Started by nroos - Last Post by nroos

Is there maybe a guide what i actually have to do to connect a I2C slave device to a PC and communicate with the device in Linux? For the conversion i would use a UM232H module.

The application notes i found so far explained always just a part, not the big picture. With the research i have done so far i found out that using D2xx and libMPSSE should do it on the software side. Compiling was successful, running the static example (static_link) also until it waited for incoming data.

But now what do i do with the UM232H? Do i have to configure it somehow? To which of the 16 connections do i attach my I2C device? I looked at the wires with a scope; one wire obviously had a data transfer on it. But there was no wire with the clock...

It would be really helpful if there was a document which just says: Do this, do that and so on, to avoid all this time consuming research.

Kind regards

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