XDS100 JTAG

GoogleGroups
1

Is it possible to debug DSP code with CCSv3.3 using XDS100 based JTAG pods?

2

Hi Ramakrishnan,

I just checked the "wiki/datasheet" for the XDS100 [1] ([2] is the Google cache, since the official page is currently down - Was working yesterday evening though), and from this I would unfortunately say: NO

Main arguments are, that the emulator doesn't support adaptive clocking [3], and that the wiki states, that it currently only supports the TMS320C28x- and TMS320C674x-families.

According to the page TI however plan to add support for the OMAP-chips in the future as well - I unfortunately don't know when - Maybe some of the TI guys know?...

Best regards
  Søren

[1] http://tiexpressdsp.com/wiki/index.php?title=XDS100
[2] http://74.125.77.132/search?q=cache:2RWoxptnjBwJ:tiexpressdsp.com/wiki/index.php%3Ftitle%3DXDS100+XDS100&hl=da&ct=clnk&cd=1&gl=dk
[3] http://www.blackhawk-dsp.com/downloads/public/datasheet/BHadaptiveClocking-TA-01.pdf

3

From: beagleboard@googlegroups.com
[mailto:beagleboard@googlegroups.com] On Behalf Of Ramakrishnan
Muthukrishnan
Sent: Tuesday, February 03, 2009 8:03 AM
To: beagleboard@googlegroups.com
Subject: [beagleboard] XDS100 JTAG

Is it possible to debug DSP code with CCSv3.3 using XDS100 based JTAG
pods?

--
Ramakrishnan

Hi Ramakrishnan,

I just checked the "wiki/datasheet" for the XDS100 [1] ([2] is the Google cache, since the official page is currently down - Was working yesterday evening though), and from this I would unfortunately say: NO

Main arguments are, that the emulator doesn't support adaptive clocking [3], and that the wiki states, that it currently only supports the TMS320C28x- and TMS320C674x-families.

According to the page TI however plan to add support for the OMAP-chips in the future as well - I unfortunately don't know when - Maybe some of the TI guys know?...

I tested this on the DM6446 and it worked for debugging the C64x+. I should work fine on the OMAP3530 as well, but you *must* pull the DSP out of reset with ARM software *prior* to launching the debugger.

4

Hi Jason and Søren

Thanks for the answers. I will try it out tonight and come back to the list.

5

Jason,

I installed CCS service pack 11 on top of my CCSv3.3 installation and
also installed the XDS100 support pack linked from the wiki page. I
see OMAP3530 devices now but tied to XDS5xx emulation. I installed a
OMAP3530 device on my setup and brought up the CCS parallel debug
manager, but I cannot "connect" to or "open" the CortexA8 device. The
error message is:

6

JTAG on Beagle is 1.8V only. Are you using a 1.8V adapter?

Gerald

7

XDS100 supposedly is, according to the wiki.

<http://tiexpressdsp.com/wiki/index.php?title=XDS100>

ramakrishnan

8

You need to make sure. If it applies any voltage other than 1.8V to the header, then it will most likely damage the board.

Gerald

9

It says:

The TI XDS100 hardware reference design has the following capabilities. Please check with your XDS100 vendor as to whether the all of the below features are supported:

Gerald

10

This is my XDS100 vendor webpage. It doesn't say much about capabilities..

<http://www.olimex.com/dev/tms320-jtag-usb.html>

I guess the problem I face is entirely a different issue. The issue is
that when I select XDS100, 28xx driver is selected by default,
possibly encoded within the .ccs file. I guess one needs to say that
one has a custom board and generate a custom config in the CCS setup.

If someone has done it with XDS100-USB for other TI devices like
DM6446, it will be great if they can share it.

Thanks
Ramakrishnan

11

As I understood the answer from Jason yesterday, he had only had luck debugging the DSP core in DM6446, and not the ARM.
Somehow I as well think this very well fits the info on the wiki - I don't think you will have any luck debugging the Cortex with the XDS100-JTAG yet.

With respect to voltages, I totally agree with Gerald, that you should make sure, that the JTAG voltage is 1.8V. That being said, I have several times (by mistake) connected a 3.3V only JTAG to other kinds of OMAP chips without (at least immediately) killing the chip. But again: Don't do it just for fun :slight_smile:

Best regards
  Søren

12

Thanks Søren. Yes, Jason had earlier told me that he had hooked it up
with DM6446. I don't have my DM6446 board with me at the moment, but
my intention is to talk to the C64x+ and not to Cortex-A8.

It will be great if someone at TI with access to XDS100 try it out on
the beagle/DM6446 EVM and report their results.

I believe Olimex follows the TI reference design, but I may be wrong.

regards
ramakrishnan