Lpc2000

Hi

I tried to get the JEENI ICE from EPI to work with the LPC2106, but 
without any success. The poeple from EPI told me it would not run with 
this ARM core, because there is not support of the RTCK signal on the 
JTAG.

I'm a little bit confused, because I had a look at the Wiggler 
connection schematic on the homepage of Leon Heller. The RTCK signal 
is not used for the Wiggler (and I guess it works with the Wiggler).

The JEENI is not able to stop the core, so it is possible to debug 
code inside the LPC2106.

Does anybody have an idea whats going on ?
Is this actually a problem with the JEENI ?

Thanky for any hint.

Bye, Wini

Notes:
DGBSEL is connected to 3.3V. All other JTAG signals are connected like 
the Wiggler schematic from Leon.

--- In lpc2000@yahoogroups.com, "roland_winistoerfer" <roland.
winistoerfer@w...> wrote:
> Hi
> 
> I tried to get the JEENI ICE from EPI to work with the LPC2106, but 
> without any success. The poeple from EPI told me it would not run 
with 
> this ARM core, because there is not support of the RTCK signal on 
the 
> JTAG.
> 
> I'm a little bit confused, because I had a look at the Wiggler 
> connection schematic on the homepage of Leon Heller. The RTCK signal 
> is not used for the Wiggler (and I guess it works with the Wiggler).
> 
> The JEENI is not able to stop the core, so it is possible to debug 
> code inside the LPC2106.
> 
> Does anybody have an idea whats going on ?
> Is this actually a problem with the JEENI ?
> 
> Thanky for any hint.
> 
> Bye, Wini
> 
> Notes:
> DGBSEL is connected to 3.3V. All other JTAG signals are connected 
like 
> the Wiggler schematic from Leon.

The RTCK is used to synchonise devices with a slow clock. 
I'm quite suprised that the use of RTCK is not optional on the JEENI 
because quite a few devices do not support it.

The LPC210x has RTCK output on pin 26. Attach this to the JEENI's RTCK 
input and try that out.

-- CHarles

--- In lpc2000@yahoogroups.com, "embeddedjanitor" <manningc2@a...> 
wrote:
> 
> The RTCK is used to synchonise devices with a slow clock. 
> I'm quite suprised that the use of RTCK is not optional on the JEENI 
> because quite a few devices do not support it.
> 
> The LPC210x has RTCK output on pin 26. Attach this to the JEENI's 
RTCK 
> input and try that out.
> 
> -- CHarles

Unfortunately, the JEENI does not support the RTCK signal, so it is 
not possible to connect to it.
I also checked the connection of the JTAG on several other schematics 
on the net and mostly they to not use the RTCK signal.

Any other suggestion ?

Wini

--- In lpc2000@yahoogroups.com, "roland_winistoerfer" <roland.
winistoerfer@w...> wrote:
> --- In lpc2000@yahoogroups.com, "embeddedjanitor" <manningc2@a...> 
> wrote:
> > 
> > The RTCK is used to synchonise devices with a slow clock. 
> > I'm quite suprised that the use of RTCK is not optional on the 
JEENI 
> > because quite a few devices do not support it.
> > 
> > The LPC210x has RTCK output on pin 26. Attach this to the JEENI's 
> RTCK 
> > input and try that out.
> > 
> > -- CHarles
> 
> Unfortunately, the JEENI does not support the RTCK signal, so it is 
> not possible to connect to it.
> I also checked the connection of the JTAG on several other 
schematics 
> on the net and mostly they to not use the RTCK signal.
> 
> Any other suggestion ?
> 
> Wini

Suggestion: Slow your JTAG clock down.

The JTAG clock must not be faster than 1/6 of the core clock 
frequency. So, if you're running from a 10MHz crystal, and the PLL has 
not been set up yet, then don't run the JTAG clock any faster than 
1MHz.

-- Charles

> 
> Suggestion: Slow your JTAG clock down.
> 
> The JTAG clock must not be faster than 1/6 of the core clock 
> frequency. So, if you're running from a 10MHz crystal, and the PLL 
has 
> not been set up yet, then don't run the JTAG clock any faster than 
> 1MHz.
> 
> -- Charles

Tried this, but without success.

I now will try to get the MAJIC (this is the successor of the JEENI) 
for some tests. I guess with the MAJIC this should not be a problem.

I also have some other problem with my hardware, but I will this post 
as new thread to this forum.

Thank you very much your help.

Wini

--- In lpc2000@yahoogroups.com, "roland_winistoerfer" 
<roland.winistoerfer@w...> wrote:
> > 
> > Suggestion: Slow your JTAG clock down.
> > 
> > The JTAG clock must not be faster than 1/6 of the core clock 
> > frequency. So, if you're running from a 10MHz crystal, and the 
PLL 
> has 
> > not been set up yet, then don't run the JTAG clock any faster 
than 
> > 1MHz.
> > 
> > -- Charles
> 
> Tried this, but without success.
> 
> I now will try to get the MAJIC (this is the successor of the 
JEENI) 
> for some tests. I guess with the MAJIC this should not be a problem.
> 
> I also have some other problem with my hardware, but I will this 
post 
> as new thread to this forum.
> 
> Thank you very much your help.
> 
> Wini

Do you have any contact with the uC over the JTAG if at all?
Which of the JTAG ports are you using?

Jon

> 
> Do you have any contact with the uC over the JTAG if at all?
> Which of the JTAG ports are you using?
> 
> Jon

No, I can not connect to the uC over the JTAG interface at all. I use 
the primary JTAG port (enabled trough the DGBSEL pin).

Wini

----- Original Message ----- 

From: "roland_winistoerfer" <roland.winistoerfer@...>
To: <lpc2000@yahoogroups.com>
Sent: Tuesday, March 23, 2004 4:53 PM
Subject: [lpc2000] Re: LPC2106 and JEENI ICE


> >
> > Do you have any contact with the uC over the JTAG if at all?
> > Which of the JTAG ports are you using?
> >
> > Jon
>
> No, I can not connect to the uC over the JTAG interface at all. I use
> the primary JTAG port (enabled trough the DGBSEL pin).

If you are using my circuit, try tying nTRST high (pin 3 of JTAG and pin 47
of LPC210x).

Leon

Hi Guys,

I'm trying to get a connection to my LPC2104 with also the JEENI from 
EPI, but without succes. Is it really not possible to use the JEENI 
for this uC? I have the new firmware (v2.2). 

Rev 2.2 firmware performs a self-test to verify that the JTAG 
connection to the target is working properly. The JEENI puts the JTAG 
TAP into BYPASS mode, writes out 32-bit pattern of ones and zeros 
(0x59A6956A) and tries to read it back.

(JTAG TAP CONTROLLER)
On my scope I see that more then 5 cycles of tck with tms '1', so the 
LPC is in test logic reset. Then its going to select IR-SCAN and goes 
to capture-IR and four times shift-IR with TMS '1'. Is this a good 
instuction for the LPC2104 to select te BYPASS register???? is the 
opcode only 4 bits????? I cant find information about that on the 
philips website.

Then I see it goes to select DR scan and writes the pattern of ones 
and zeros. Later it wants to read it back, but the TDO stays '0' and 
the error JTAG ERROR TDO=0000.0000 appears (from the firmware). (TDO 
is connected fine, so thats not it)

Does some of you know more about the tap controller and instructie 
register of the LPC210x or where I can find that and more about the 
compactability with the JEENI?

See message 2007: -Does ARM EMBEDDEDICE work with LPC210x-  for the 
answer if the JEENI support the LPC210x. 


--- In lpc2000@yahoogroups.com, "rebloby" <rebloby@y...> wrote:
> Hi Guys,
> 
> I'm trying to get a connection to my LPC2104 with also the JEENI 
from 
> EPI, but without succes. Is it really not possible to use the JEENI 
> for this uC? I have the new firmware (v2.2). 
> 
> Rev 2.2 firmware performs a self-test to verify that the JTAG 
> connection to the target is working properly. The JEENI puts the 
JTAG 
> TAP into BYPASS mode, writes out 32-bit pattern of ones and zeros 
> (0x59A6956A) and tries to read it back.
> 
> (JTAG TAP CONTROLLER)
> On my scope I see that more then 5 cycles of tck with tms '1', so 
the 
> LPC is in test logic reset. Then its going to select IR-SCAN and 
goes 
> to capture-IR and four times shift-IR with TMS '1'. Is this a good 
> instuction for the LPC2104 to select te BYPASS register???? is the 
> opcode only 4 bits????? I cant find information about that on the 
> philips website.
> 
> Then I see it goes to select DR scan and writes the pattern of ones 
> and zeros. Later it wants to read it back, but the TDO stays '0' 
and 
> the error JTAG ERROR TDO=0000.0000 appears (from the firmware). 
(TDO 

> is connected fine, so thats not it)
> 
> Does some of you know more about the tap controller and instructie 
> register of the LPC210x or where I can find that and more about the 
> compactability with the JEENI?