No USB 3.0 Support?

[lpcware]

Content originally posted in LPCWare by jonathan84clark on Tue Dec 02 17:59:23 MST 2014
I have recently been having a tough time getting the LPC Link 2 to work with a new test, calibration and programming fixture I am working on. I was getting things like "Hardware transfer error" and I also ran into issues with LPCXpresso locking up when attempting to program a connected jtag device through the LPC-Link2 connected to a USB 3.0 connection.

After doing some research on your forms I discovered that USB 3.0 is not really supported very well (or at all), in other works, if you have a USB 3.0 port you are trying to use with the LPC-Link2, you actually have to downgrade to a slower USB 2.0 port in order for it to work.

So my question is; when do you expect to have this issue fixed? When are you planning to support USB 3.0? Most new computers are coming out with only one or two USB 2.0 ports, the rest are USB 3.0. The fixture I am working on uses a Lenovo mini which has all USB 3.0 ports and I fought with it for 2 hours before I found the problem. If the trend continues; USB 2.0 will gradually fade away and we will have nothing but USB 3.0. How many (functional) computers can you think of that still have USB 1.1 ports? Since USB 1.1 has become totally obsolete and is hardly used anymore; don't you think USB 2.0 will get to that point in the near future as well?

If you are not intending to support USB 3.0 you may want to publicize it a little better, there are a lot of people on the forums who have had similar issues to what I have had and I am sure it would cure a lot of headaches if everyone just knew "Oh, nxp doesn't use USB 3.0" . Maybe on the LPC-Link2 package you should say "This product does not work with USB 3.0" or something like that.

Thanks,

Jonathan L Clark

[lpcware]

Content originally posted in LPCWare by lpcxpresso-support on Wed Dec 03 00:56:31 MST 2014
There are no known issues with running LPCXpresso + LPC-Link2 over USB3.0 - indeed many of the machines we use for developing and testing the product are USB3.0 only. And given how long USB3.0 only machines have been shipping now, if there was a fundamental problem, the forums would contain a constant stream of reports of problems.

Two things spring to mind that have been seen historically. First of all, when using a USB3.0 port, make sure you have the very latest *firmware* for the USB port. There have been lots of problems with firmware on USB3.0 ports and most manufacturers have issued numerous firmware updates over time.  And PC manufacturers often do not ship new machines with the latest drivers. Note this is not the Windows driver but the motherboard firmware in the USB3 port itself.

The other thing to check would be, if you are using Windows 8.1, check the USB power settings:

http://wind8apps.com/windows-8-1-usb-3-0/

Note that neither of the above suggestions are LPCXpresso/LPC-Link2 specific - they can affect all sorts of USB devices. But they have solved issues others have seen with using LPC-Link2 in the past.

I would also suggest trying things liking swapping cables etc.

Regards,
LPCXpresso Support