Possible to debug LPC1343 LPCXpresso board while using USB port?

[lpcware]

Content originally posted in LPCWare by Thilo on Tue May 31 13:56:56 MST 2011
Hi,

I'm considering to get myself a LPC1343 LPCXpresso board to prototype a HID device, but I am wondering if it is possible to use the debugger on a program that uses the USB port to register the device as an HID. So, is it possible?


Thanks,

Thilo

[lpcware]

Content originally posted in LPCWare by Lumen on Tue Apr 03 06:51:23 MST 2012

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Quote: Zero
The right way is to use a transistor (or more elegant a FET) as shown in my schematic / board to switch 1.5k pullup to D+ :)

So USB_VBUS and USB_CONNECT can be used.

Schematic:
[COLOR=#5174a3]http://www.flickr.com/photos/58892165@N08/5406160762/[/COLOR]


Board:
[COLOR=#5174a3]http://www.flickr.com/photos/58892165@N08/5406160872/[/COLOR]

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Thank you Zero, thats the FET I was looking for :-)

[lpcware]

Content originally posted in LPCWare by Ex-Zero on Tue May 31 15:41:10 MST 2011
The right way is to use a transistor (or more elegant a FET) as shown in my schematic / board to switch 1.5k pullup to D+ :)

So USB_VBUS and USB_CONNECT can be used.

Schematic:
[COLOR=#5174a3]http://www.flickr.com/photos/58892165@N08/5406160762/[/COLOR]


Board:
[COLOR=#5174a3]http://www.flickr.com/photos/58892165@N08/5406160872/[/COLOR]

[lpcware]

Content originally posted in LPCWare by Thilo on Tue May 31 15:23:13 MST 2011
Hi,

thanks. The user manual you linked provides an example for using the usb connector, but it also mentions that it's not the "right way" to do it. Where can I find information for a complete connection circuit?



Thanks,

Thilo

[lpcware]

Content originally posted in LPCWare by Ex-Zero on Tue May 31 14:19:56 MST 2011
That's not the same USB port. LPCXpresso's USB is used for LC-Link (=Debugger via SWD).

You have to add another USB connector to use the target board USB, so debugging target USB is possible :)

See #9 of:
http://knowledgebase.nxp.trimm.net/showthread.php?t=505

Also:
http://ics.nxp.com/support/documents/microcontrollers/pdf/lpcxpresso.getting.started.pdf