lpcware

Questions re USB device using ROM functions

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by g40 on Thu Jan 21 04:43:48 MST 2016
Hi, can anyone help with the following?

I've got a working bulk mode loopback test that more or less works as expected with an NXP Xpresso 4337 board connected to a Windows 7 host. EP0 custom (vendor) requests also work.

1. What's the state re thread-safety for the ROM functions? If I add a systick handler and enable the ticker then USB dies.

2. Does anyone have a working isochronous example? Or even some documentation? Simply changing the relevant descriptors entries does not work

3. Is there any progress on source code and/or debug support for the ROM functions? I really don't understand why this is closed-source ...

TAIA

Jerry.

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