FTDI Community

General Category => Discussion - Software => Topic started by: petewall on May 07, 2018, 08:32:49 PM

Title: Cannot find FT4222 chip on Windows
Post by: petewall on May 07, 2018, 08:32:49 PM

I'm still working on debugging my other issue (http://www.ftdicommunity.com/index.php?topic=83.0 (http://www.ftdicommunity.com/index.php?topic=83.0)).  While I was able to detect the FT4222 chip on my Mac OS X machine, when I built the software on Windows 10, I cannot see it.

To reduce any issues with my code, I'm using the i2c_master example.  In the code, after the call to:

Code: [Select]

FT_STATUS status = FT_CreateDeviceInfoList(&numOfDevices);
numOfDevices is always 0.

However, when I look at the Windows Device Manager, I do see a "FT4222H Mode 3 Device" entry in the "Universal Serial Bus controllers" section.

I installed the D2xx drivers (http://www.ftdichip.com/Drivers/D2XX.htm) using the Windows setup executable. Can you help me detect this device in my code?

Title: Re: Cannot find FT4222 chip on Windows
Post by: FTDI Community on May 08, 2018, 11:32:16 AM

Hello,

There should be no problems running the example code provided with the library.

Does the same thing happen on a different Windows PC?

Please ensure that you are using the latest version LibFT4222 Windows Library (v1.4.1) and Examples (http://www.ftdichip.com/Support/SoftwareExamples/LibFT4222-v1.4.1.zip).

Mode 3 is the correct mode for using the device as 1 port for data stream (I2C or SPI) as per Table 5.1 in the FT4222H Datasheet (http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT4222H.pdf).

You could try completely uninstalling and reinstalling the FTDI drivers. See FTDI_Driver_Uninstall_with_2-12-28_Install.pdf (ftp://u45902898-ide:Ftd1$erv@ftp.ftdichip.com/CES/Forum/FTDI_Driver_Uninstall_with_2-12-28_Install.pdf) for details on how to do this.

Best Regards,
FTDI Community