Lpc2000

From: "yekai1k" <yekai1k@...>
To: <lpc2000@yahoogroups.com>
Sent: Friday, April 08, 2005 2:26 AM
Subject: [lpc2000] Wiggler with LPC2124


>
>
> Hi
>
> I made a wiggler board according to the Wiggler Schematic posted in the
> Files folders, but it can not work properly with my LPC2124 chips.
>
> I'v tried many RDI software like BanyanII(http://armdebug.27h.com/)
> ARMJtagDebugFinal 1.5.1 (http://armjtag.27h.com) and some others, none
> could work with my board.
>
> Both BanyanII and ARMJtagDebugFinal could detect ARM7TDMI-S core, but
> while debugging, BanyanII report "warning 05 data abort",
> ARMJtagDebugFinal did download the ture promgram to the chip, it just
> could control the chip to run or stop.
>
> Did anyone have the same experience like me?
> Could you give me some advises?

Have you tried the Macraigor OCD Commander software? That is intended for 
use with the Wiggler. Which Wiggler schematic did you use?

Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

> use with the Wiggler. Which Wiggler schematic did you use?
> 
> Leon
> --
> Leon Heller, G1HSM
> http://www.geocities.com/leon_heller

From: "yekai1k" <yekai1k@...>
To: <lpc2000@yahoogroups.com>
Sent: Friday, April 08, 2005 5:45 AM
Subject: [lpc2000] Re: Wiggler with LPC2124


>
>
> I made the wiggler board according to the file named "Wiggler
> Schematic.pdf" in the JTAG folder.
> I haven't tried OCD Commander, I will do it immediately.

You could try my JTAG interface design in jtag.zip. I know that works OK as 
I use it myself. The one you are using won't work with OCD Commander without 
a slight mod. - pins 8 and 15 on the DB-25 connector need to be connected. 
The current OCD Commander software looks for that connection.

Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

> You could try my JTAG interface design in jtag.zip. I know that works OK as
> I use it myself. The one you are using won't work with OCD Commander 
> without
> a slight mod. - pins 8 and 15 on the DB-25 connector need to be connected.
> The current OCD Commander software looks for that connection.
> 
> Leon
> --
> Leon Heller, G1HSM
> http://www.geocities.com/leon_heller

From: "Aalt Lokhorst" <lokhorst@...>
To: <lpc2000@yahoogroups.com>
Sent: Friday, April 08, 2005 11:26 AM
Subject: Re: [lpc2000] Re: Wiggler with LPC2124


>
> Hello Leon,
> I am using your circuit without problems. I had only one issue.
>
> In your schematic is a HC244 buffer. The problem with this one, at least
> with the Philips type, it is not 5V tolerant. If it is powered by 3.3V
> then the inputs should not exceed 3.3V. It depends on the LPT port if
> this will happen. I think the LVC244 is a better choice just in case the
> LPT port delivers strong 5V levels. I have seen situations where the
> 3.3V of the circuit was lifted by the voltage from the LPT port.
> (Because of the diodes between the input and the VCC in the HC device)

I just checked the voltages on my port and they were about 4.8 V, but I 
haven't had any problems; I used the Philips part, but all HC parts should 
be the same. I'll amend the design, anyway.


>
> We are using the Rowley CrossWorks software.
> (Nice software and very fast responding support people)

I use their software as well.

Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

> ----- Original Message -----
> From: "Aalt Lokhorst" <lokhorst@...>
> To: <lpc2000@yahoogroups.com>
> Sent: Friday, April 08, 2005 11:26 AM
> Subject: Re: [lpc2000] Re: Wiggler with LPC2124
> 
> 
>  >
>  > Hello Leon,
>  > I am using your circuit without problems. I had only one issue.
>  >
>  > In your schematic is a HC244 buffer. The problem with this one, at least
>  > with the Philips type, it is not 5V tolerant. If it is powered by 3.3V
>  > then the inputs should not exceed 3.3V. It depends on the LPT port if
>  > this will happen. I think the LVC244 is a better choice just in case the
>  > LPT port delivers strong 5V levels. I have seen situations where the
>  > 3.3V of the circuit was lifted by the voltage from the LPT port.
>  > (Because of the diodes between the input and the VCC in the HC device)
> 
> I just checked the voltages on my port and they were about 4.8 V, but I
> haven't had any problems; I used the Philips part, but all HC parts should
> be the same. I'll amend the design, anyway.
> 
> 
>  >
>  > We are using the Rowley CrossWorks software.
>  > (Nice software and very fast responding support people)
> 
> I use their software as well.
> 
> Leon
> --
> Leon Heller, G1HSM
> http://www.geocities.com/leon_heller
> 
> 
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From: "Aalt Lokhorst" <lokhorst@...>
To: <lpc2000@yahoogroups.com>
Sent: Friday, April 08, 2005 12:57 PM
Subject: Re: [lpc2000] Re: Wiggler with LPC2124


>
> Hello Leon,
>
> In first instance I used a HC244 and it was working fine in combination
> with the KEIL MCB2100 board. After several days I connected some extra
> hardware to the board and I was debugging the circuit with the
> oscilloscope. A 'led blink' program was running and I saw the 3.3V
> supply 'bouncing' between 3.3V and 3.6V. If the leds were 'on' then
> circuit was sinking more current than the LPT port could deliver and the
> result was 3.3V. If the leds were 'off' then the circuit was powered by
> the LPT-port instead of the 3.3V regulator. If I didn't measure the
> voltage in the circuit then I probably never discovered this because the
> software was running as expected.
>
> BTW there is another power issue but this is related to the MCB2100
> board. On my MCB2100 board the 3.3V supply had a ripple. I read the
> datasheets from the LD1117S33 regulator, which is used on the MCB2100,
> and found that all the specs were based on a circuit whit a 10uF output
> capacitor on the regulator. As far as I know this capacitor is not
> present on the MCB2100 board. I soldered one at the bottom of the board
> and now the ripple is gone and the voltage is a stable 3.3V.

I thought everyone put a 10 uF capacitor on regulator outputs feeding high 
speed circuits. 8-)

Leon
--
Leon Heller, G1HSM
http://www.geocities.com/leon_heller

From: "Marko Pavlin" <mp@...>
To: <lpc2000@yahoogroups.com>
Sent: Friday, April 08, 2005 1:08 PM
Subject: [lpc2000] (OT): good LPC900 group


> 
> Is there LPC900 group which is as good as this LPC2000 group?

There is one on Yahoo, but it isn't nearly as active as this one.

Leon

> The current OCD Commander software looks for that connection.
> 
> Leon
> --
> Leon Heller, G1HSM
> http://www.geocities.com/leon_heller

From: "yekai1k" <yekai1k@...>
To: <lpc2000@yahoogroups.com>
Sent: Monday, April 11, 2005 8:45 AM
Subject: [lpc2000] Re: Wiggler with LPC2124




Hello Leon

I down load OCD Commander and short P1.8 and P1.15 as you mentioned .
OCD Commander can read the register and cpu status, but while i
trying to download the elf file, it reports \ufffd\ufffd
*******************
D:\beep.elf: downloaded 1388 bytes in 0 minutes, 0.589 seconds
Error during download
PC set to starting address 0x00000000
*******************

This phenomenon is samilar to using armdebugfinal software.
If wiggler is doing well with lpc2104\ufffd\ufffdwhy it can not going along
with my lpc2124 chip. Faint...
I am trying my best to find it out.

That is strange. I've only used it with the LPC210x, so can't help.

Leon