FTDI Community

General Category => Discussion - Drivers => Topic started by: ganswer on February 04, 2019, 12:54:50 PM

Title: D3XX 64-bit driver problem with multiple devices connected
Post by: ganswer on February 04, 2019, 12:54:50 PM

I'm using the FTD3XX_NET wrapper relying on the D3XX driver.
The D3xx driver v. 1.3.0.2 seems buggy in the 64-bit version. In this version, when the wrapper is used for enumerating the connected devices:

FTDI ftdi = new FTDI();
uint nDevices;
ftdi.CreateDeviceInfoList(out nDevices);
List<FTDI.FT_DEVICE_INFO> deviceInfoList;
deviceFtdi.GetDeviceInfoList(out deviceInfoList);

AND in case there are two devices connected, the second device in the list has Description empty and serial 0 (ftdi.GetDescriptio(deviceInfo) and ftdi.GetSerialNumber(deviceInfo)). While in the 32-bit version, the right Description and serial is returned also for the second device.

Looking deeper, when in 64-bit, the deviceInfo of the second device seems to have the data in the byte[] array field for Description (and similarly the one for Serial) shifted:
[0, 0, 0, 0, 70, 84, 68, 73, 32, 83.....]
while the first device has not those 4 initial bytes at 0.

Title: Re: D3XX 64-bit driver problem with multiple devices connected
Post by: FTDI Community on February 05, 2019, 04:11:02 PM

Hello,

Can you ensure that you are using the latest version of our FTD3XX driver, which you can obtain here:

FTD3XX_NET.ZIP (ftp://u45902898-ide:Ftd1$erv@ftp.ftdichip.com/CES/D3XX/FTD3XX_NET.ZIP)

If you are still having problems after trying this please can you contact email support on support1@ftdichip.com, referencing this thread and we will assist you further.

Regards,
FTDI Community

Title: Re: D3XX 64-bit driver problem with multiple devices connected
Post by: ganswer on February 06, 2019, 07:43:48 AM

Hello, yes I tried also the FTD3XX_NET you provided and the problem is confirmed. I'll write then, thanks

Title: Re: D3XX 64-bit driver problem with multiple devices connected
Post by: n1mm on February 06, 2019, 08:27:08 AM

Please note that the source files are missing for the FTD3XX_Net.dll  linked to on the page: https://www.ftdichip.com/Support/SoftwareExamples/FT60X.htm . They are supposed to be in the file: https://www.ftdichip.com/Drivers/D3XX/FTD3XX_NET.zip but that contains only the DLLs.  The files referenced above compile fine here, and I needed them to backlevel the dll from .Net 4.5 to 4.0. 

You don't want to have users have to come to a community site just to find this, but I am happy I succeeded!

Tom Wagner

Title: Re: D3XX 64-bit driver problem with multiple devices connected
Post by: jocagovi on October 04, 2019, 05:08:18 AM

I know this is an old post but I'm also loking for the D3XX NET souce. We have legacy code Framework 4.0 where we need to integrate the FT601. The link provided in this thread no longer works.

Title: Re: D3XX 64-bit driver problem with multiple devices connected
Post by: FTDI Community on October 04, 2019, 11:52:20 AM

Hello,

Please contact email support on support1@ftdichip.com

Regards,
FTDI Community