I have started work on a board with a LPC2129. I am using the Green
Hills Software and Green Hill Debugger. I am having a hard time
writting to the target memory. I can toggle all the JTAG lines (i.e.
the VTA) command. I have a hard time resetting the ARM. I was able
to write and read back once, I am not sure what the sequence was. I
then was able to down load my code and run it. I have lowered the JTAG
clock to 10 KHz. I really could use some help. Thanks in advance,

Sal Start a New Thread

What JTAG are you using? Green Hill supplied me with a Wiggler for
evaluating their ARM tools with a board we were given at an Atmel seminar. I
think it worked OK, but it was a long time ago.

Leon Start a New Thread

I'm also using Greenhills for development on an LPC2292 (and an Atmel
AT51) without a problem. I have access to a "Slingshot" and a "Probe"
and both debug at much higher JTAG rates than 10KHz.

I believe the "Probe" has a serial (terminal-style) interface that
allows you to force the JTAG speed. You may want to have a look at this
- it's documented in one of the manuals.

David Start a New Thread

I am not using the Green Hills tools. But one
suggestion is that you have to wait, lets say 10 ms,
after target reset, because we have a wakeup timer in
the LPC2xxx parts. And the device is not accessible
immediately after reset.

Hope this helps.

Regards
Zdravko Dimitrov Start a New Thread

The following is the probe info when the Green Hills Probe comes up:

Green Hills Probe and SuperTrace Probe for ARM/XScale, v1.12.2
Firmware built Sep 5 2006 12:16:09
Serial No: 2392
Part number 520-GP300-02A
Green Hills Software, Inc
http://www.ghs.com
Serial: 9600
USB: Enabled
Ethernet: Enabled
IP: 192.168.101.1
Gateway: 0.0.0.1
Netmask: 255.255.255.0
MAC Addr: 00:50:c2:10:34:58
Starting the initialization sequence.
01234567 done.

I also have pasted the results from a " set" command:

clock = 10 kHz
use_rtck = off
rtck_use_timeout = off
logic_high = 3.300000
target = arm7tdmi-s
checker = off
power_detect = on
user_button = tri-state
user_string baudrate = 9.6 kbaud
rst_pulse = 1 s
rst_settle = 1 s
jrst_pulse = 300 ms
jrst_settle = 300 ms
rst_tap_then_sys = off
endianness = little
fast_dl = off
abort_check = on
disable_swbp = off
rst_type = hard
override_mmu = off
force_dbgack = on
halt_settle = 800 ms
arm7tdmi-s[?] %

I can do the VTA command and all the pins are fine when connected to
the target. I can seem to be able to halt or reset the ARM Core.
All the memory reads after writes come back with 0xFF... . I have
done the jr and ji and the jd commands many times. When I do ji
0xff I usually get 0xf back. Only twice I have got 0x01 but I can
not figure out the sequence of events. These two times I have been
able to read memory and even down load code.

Any help is appreciated,

Sal Start a New Thread