• State Not Answered
  • Locked Locked
  • Replies 11 replies
  • Subscribers 22 subscribers
  • Views 3023 views
  • Users 0 members are here
Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

USB device is not recognized (LPC3250)

Spam Autoblock

Hi,

I have downloade the USB HID code of 3180 and configured it 3250
ics.nxp.com/.../code.bundle.lpc3180.keil.zip

I have seen a thread regarding this "USB implementation in LPC3250".I am facing the same problem like "USB DEVICE IS NOT RECOGNIZED" It is not enumerated in the PC.

I would like to know how it is(or can be) resolved?

Also it says "SDRAM ***MUST*** be initialised for USB sample code to work". I did not get how it need to be initialized also.

Thanks in advance.

Parents
  • 0 in reply to Spam Autoblock

    I have been struggling to get USB Host configured on the Phytec Board (with a different OS & Compitler). I have confirmed the ability to configure the ISP1301 and clocks appear to be correct.
    I have configured the LPC3250 USBHost controller in DAT/SE0 bi-directioanl mode to the point that it queues Transfer Buffers, but the D+/D- lines never toggle on the scope. Each transfer subsequently results in a "No Device Response" condition code.

    Do you have a code fragment that configures USBHost that you can share? Or possibly just register dumsp of the relevant USB register?

Reply
  • 0 in reply to Spam Autoblock

    I have been struggling to get USB Host configured on the Phytec Board (with a different OS & Compitler). I have confirmed the ability to configure the ISP1301 and clocks appear to be correct.
    I have configured the LPC3250 USBHost controller in DAT/SE0 bi-directioanl mode to the point that it queues Transfer Buffers, but the D+/D- lines never toggle on the scope. Each transfer subsequently results in a "No Device Response" condition code.

    Do you have a code fragment that configures USBHost that you can share? Or possibly just register dumsp of the relevant USB register?

Children
No data