Lpc2000

Is green light solid or blinking?  If driver is not loaded it will just
blink.  The driver updates the J-Link firmware on the fly.  So you want to
be working with the latest J-Link driver from Segger's website.

Are you restarting jlink.exe each time you reinsert your J-link, or leaving
it open?

The other thing you might want to do is power cycle your machine with J-Link
plugged in.  Then see if devmgmt.msc (shortcut from start/run) is still
happy.


Joel

> Hi All,
> 
> Just plugged in a jlink for the first time.  Usb drivers look good in
> devman, and green light on unit is on, but I can't talk to it; I thought
> someone on the list might have seen the following errors before.
> 
> Thanks,
> Steve
> 
> J-Link>usb 0
> Connecting to J-Link via USB (Port: 0)
> JTAG_GetFirmwareString: J-Link reports unsupported firmware string size of
> 26956
>  (expected 112)
> Could not identify firmware (Read failure)
> J-Link>usb 1
> Connecting to J-Link via USB (Port: 1)
> Can not connect to J-Link via USB.
> J-Link>usb 2
> Connecting to J-Link via USB (Port: 2)
> Can not connect to J-Link via USB.
> J-Link>usb 3
> Connecting to J-Link via USB (Port: 3)
> Can not connect to J-Link via USB.
> J-Link>usb 0
> Connecting to J-Link via USB (Port: 0)
> JTAG_GetFirmwareString: J-Link reports unsupported firmware string size of
> 27502
>  (expected 112)
> Could not identify firmware (Read failure)
> J-Link>usb 0
> Connecting to J-Link via USB (Port: 0)
> JTAG_GetFirmwareString: J-Link reports unsupported firmware string size of
> 25376
>  (expected 112)
> J-Link>