lpcware

LPC4337 USB ROM driver does not receive setup packet

Discussion created by lpcware Employee on Jun 15, 2016
Content originally posted in LPCWare by Alex on Tue Mar 04 08:22:19 MST 2014
Hi,

I'm trying to use the USB0 port with the internal USB HID ROM driver.

The only thing I reached so far is that the USB device gets configured by the ROM driver and that the USB bus reset interrupt is raised.

But until now I was not able to receive a setup packet.

I used my osciloscope to monitor the dp and dm lines. The signals on both lines are looking really well.
The second thing I did is to connect a hardware USB protocol debugger. It says that the status stage of the setup transfers is always missing. This means the device does not acknowledge the data out packet of the setup transfer.

Any ideas?

Best regards,
Alex

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