Using Olimex ARM-USB-OCD-H JTAG Debugger and CrossWorks connected to a NGX Technologies BlueBoard LPC-1768-H. When trying to connect to the target using CrossWorks software (Generic FT2332 Device) get the following error:
“Cannot identify target. Check JTAG connections and that the target is powered”
Each time I try to connect I see that two of the board’s LEDs D4 and D8 flash. Note that if I disconnect the board from the JTAG connector and connect the board to the USB port, my PC identifies the board indicating that the program on the board is operating when not connected to the JTAG connector. The following are Crosswork settings for the Generic FT2332 Device:
nSRST Inversion Mask 0x0200
nSRST Mask = 0x0200
nTRST Inversion Mask = 0x0000
nTRST Mask - 0x0400
Output Pins = 0x0F1B
Output Value = 0x0408
PID: 0x002B
VID: 0x15BA
JTAG Clock Divider: 10
CrossWorks support suggested that I make the following two changes based on another customer who was having a similar problem:
nTRST Mask: 0x0100
Output Value: 0x0108
After those changes I get the following error:
“Target not responding”
Note that if I don’t connect the JTAG it appears that the onboard program on the BlueBoard is functioning, i.e., when you reset the board the LED flashes a few times and then illuminates. Are there jumpers on the board that need to be changed to use JTAG?
Is there any documentation on the board other than the 6 page user manual and schematic?
Thanks.