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USB driver not working on W7 with NXP LPC13xx VCOM

Primoz Princic

I'm playing around with LPC 1343, and my computer can't load driver for this device:
NXP LPC13xx VCOM

I compiled and loaded program to LPC, but drivers provided for W7 64 does not install form LPC13xx_SampleSoftware.106/USBCDC/ Win7_64 folder.

I also tried virtual XP machine using WinXP_WIN7_32 but no avail.

Can anyone help?

  • 0

    Double posts:
    's MDK-ARM V1.06 (Jun 8, 2011)"
    ics.nxp.com/.../code.bundle.lpc13xx.keil.zip

    In this example, the PID (Product ID) on the device descriptor (0x4003) doesn't match to those of INF files (PID_0003).

    usbdesc.c

/* USB Standard Device Descriptor */
const uint8_t USB_DeviceDescriptor[] = {
  USB_DEVICE_DESC_SIZE,              /* bLength */
  USB_DEVICE_DESCRIPTOR_TYPE,        /* bDescriptorType */
  WBVAL(0x0200), /* 2.0 */           /* bcdUSB */
  USB_DEVICE_CLASS_COMMUNICATIONS,   /* bDeviceClass CDC*/
  0x00,                              /* bDeviceSubClass */
  0x00,                              /* bDeviceProtocol */
  USB_MAX_PACKET0,                   /* bMaxPacketSize0 */
  WBVAL(0x1FC9),                     /* idVendor */
  WBVAL(0x4003),                     /* idProduct */    // <------
  ...

    \WinXP_WIN7_32\lpc13xx-vcom.win32.inf

[DeviceList]
%DESCRIPTION%=LPC13xxUSB, USB\VID_1FC9&PID_0003         // <------


\Win7_64\lpc13xx-vcom_win7_64bit.inf

[DeviceList]
%DESCRIPTION%=LPC13xxUSB, USB\VID_1FC9&PID_0003

[DeviceList.ntamd64]
%DESCRIPTION%=LPC13xxUSB, USB\VID_1FC9&PID_0003

    Modify either one, so that these PID values take the same value.
    For example of device descriptor,

    usbdesc.c
const uint8_t USB_DeviceDescriptor[] = {
  ...
  WBVAL(0x0003),                     /* idProduct */    // <------

    Tsuneo

  • 0 in reply to Chinzei Tsuneo

    Thx for the solution.

    It is rather simple if you know where to look :-)
    You helped a couple of people with this, as I'm a part of "study" group of beginners.