Need help please!
I am using H-JTAG v092 to program an LPC2148. The LPC2148 is connected though a JTAG Programmer/debugger. The error is " Unable to find target" the lPC2148 is properly connected through USB (another PC) and all lights are on Yellow, green and red.
When I reset target the yellow light blinks which indicates communication, however it returns "unable to find target". I have tried all possible JTAG LPT setting combinations and gone through the manual.

Your help is much appeciated.
Jay

the JTAG on LPC2148 can be "locked", for example by flashing ulink2 firmware (haha), so what you can do is to use flashy or LPC2000 flasher von NXP to erase the device.

I have simulated such behaviour right now and it seems to be exact the same case.

[ Last edited by  tinman at 2010-1-22 06:45 ]

I had that problem - turned out to be a bad Olimex JTAG from microcontroller pros - they sent me a new one and all was fine.

It may have no reset signal。you need check it!