LPCXpresso board with LPC1769 printout in debug window "Device Attached on port 0" hole time

[lpcware]

Content originally posted in LPCWare by JanWester on Mon Sep 02 11:50:07 MST 2013
I using nxpUSBlib v0.98 and MassStorageHost example with LPC1769 LPCXpresso bord
On startup it printout in debug window  "Device Attached on port 0" at hole time
When I put osc probe on it stop
In the library the USB_Init routine dosn't initialize the port P2(9) soft connect
Must I have the soft connect logic, and if I must, should it been initialized ?

Printout:
Device Unattached on port 0
Device Attached on port 0
Device Attached on port 0
Dev Enum Error
-- Error port 0
-- Error Code 4
-- Sub Error Code 0
--

[lpcware]

Content originally posted in LPCWare by Tsuneo on Wed Sep 04 07:43:13 MST 2013

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Quote:
I using nxpUSBlib v0.98 and MassStorageHost example with LPC1769 LPCXpresso bord...
Must I have the soft connect logic?

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For host operation, you should have 15k pull-down resistors on D+ and D- lines,
instead of "soft connect" circuitry as USB device setup.

Look at the figure on "13.7.2 Connecting USB as a host" section of the User Manual.
http://www.nxp.com/documents/user_manual/UM10360.pdf

Tsuneo