Hello,

Does you Microcontroller already have UART or say I2C ports?
If so you could consider that method rather than using FT230X which would complicate your design by adding an additional USB Host.

If you require a USB Host capable of hosting FTDI devices then the best solution I can recommend is FT90x from our sister company Bridgtek.

See AN 360 FT9xx Example Applications section 2.23.6 USBH Example FT232.

Take a look at FT90x UART to FT232 Host Bridge, there is already a software example which can host FTDI devices including FT230X.
A video has been created which demonstrates this:

https://youtu.be/_vwOKFaOcJI

Bridgetek provide FT9xx Development Modules and a free FT9xx Toolchain for custom application development.

If you require support with this IC then please contact Bridgetek for support:
https://brtchip.com/ic-module/contact-us/

Best Regards,
FTDI Community

Hello,

FT230XS is a USB device and must be connected to a USB Host.

So you can't connect two of them together like that with the USB signals.

Best Regards,
FTDI Community

Hi Michal,

The recommended way of connecting VBUS depends on your application:

 (a)  For self-power application, refer to the UMFT600x/UMFT601x datasheet;

(b)  For bus-power application, VBUS is the 5V power input for all circuits. If a 5V to 3.3V regulator is used, connect the 3.3V to the FT601 VBUS pin.

 Note, the voltage divider in the Development Module between the USB power and VBUS pin is used to lower the voltage level from 5V to 3.3V so that FT601 can take it as a 3.3V logic input for VBUS sensing purpose.

If you haven’t already, please refer to AN_412 FT600/FT601 Bridge Chips Integration. This application note is for designers who want to integrate the FT60x into new designs. As well as this have a look at our FT600Q-FT601Q SuperSpeed USB3.0 IC Datasheet and Technical Note TN_168 FT600_601 Errata Technical Note.

Best Regards
FTDI Community

Hi,

it sounds like this could be a small hardware issue. do you experience this on any other PCs? Have a look at https://ftdichip.com/wp-content/uploads/2020/08/AN_430-FT60X-PCB-Layout-Guidelines.pdf. This goes over the PCB layout guidelines for FT601. It could be that your design is just on the cusp of working, and every once and a while it stops working and needs reset. I would go through the design guidelines to make sure everything is setup as it should be.

Best Regards

FTDI Community   

Hello,

Which FTDI chip are using? have you got a schematic you can share? a USBView screenshot of the device would also be helpful. Also what kind of cable are you using to connect the FTDI device?

Best Regards

FTDI Community

Hi,
You are correct that you need to use the FTDI driver for the latency issue.  The thread below covers this subject:- 
https://www.ftdicommunity.com/index.php?topic=547.msg2134#msg2134

The last post from the thread has the info on latency you need. 

On the double instance of the port, are you seeing a .cu and a .tty for the same device or is there a different thing appended onto the end of each entry?

Regards
FTDI Community

Hello,

Here is some feedback from our R&D team:

FT4222H SPI Slave can only receive bytes.
It cannot accept bit transmission.

The workaround might be for the SPI master to send additional dummy bits.

Best Regards,
FTDI Community

Hi John,

we have some HID precompilied firmware that can help you. The HID firmware for VNC2 are for host port 1. The precompiled firmware can be found on our website https://ftdichip.com/firmware/precompiled/. You should have a look at AN 193 VNC2 SPI Master to USB HID Class Host Bridge. there are other HID class firmware, however i believe this one will be most rlevent to you.

Best Regards

FTDI Community