Lpc2000

I want to debug with both serial ports active on an Olimex P1 target,
so I am tying to use the RAM loader in Crossworks.

I have recompiled Loader.EXE but when I try and use it Verify fails,
probably because I have not configired the build of the Loader correctly.

Does anybody have a ready built one? Program and data are only a few
K, so I am not fussy where the link splits!

--- In lpc2000@yahoogroups.com, "hodgejackiehank" 
<hodgejackiehank@y...> wrote:
> I want to debug with both serial ports active on an Olimex P1 
target,
> so I am tying to use the RAM loader in Crossworks.
> 
> I have recompiled Loader.EXE but when I try and use it Verify fails,
> probably because I have not configired the build of the Loader 
correctly.
> 
> Does anybody have a ready built one? Program and data are only a few
> K, so I am not fussy where the link splits!

Are you sure that you need to re-compile the loader? The default 
loader uses the ARM's debug comms channel to communicate with the 
debugger and the debug comms channel has nothing to do with the 
serial port. If it is an issue of signal usage, then I can't see that 
the RAM loader would be any better as it uses the same JTAG signals 
used by the debug comms channel loader.

Jon Elliott

> 
> Are you sure that you need to re-compile the loader? The default 
> loader uses the ARM's debug comms channel to communicate with the 
> debugger and the debug comms channel has nothing to do with the 
> serial port. If it is an issue of signal usage, then I can't see that 
> the RAM loader would be any better as it uses the same JTAG signals 
> used by the debug comms channel loader.
> 
> Jon Elliott

Uh hu. As you may have seen on earlier posts, I started out with web7
days kit. I have now 'upgraded' to Olimex, but still have thier wriggler.

Now, early on in the show I saw the comms channel loader, and I knew
that the bootloader used the serial port, so I kind off assumed that
the comm loader option was for use together with the serial port.....I
attached a serial leaded to com1 and it started to work. I still had
some difficulty but found that the target board did not have the 3v3
connected and it was running througth the protection diodes. I also
noted that the ground pins on the wriggler side were not connected to
gnd, gns was only connected on the // port side, but I assumed that
previously it had been getting 0V via the serial.

Of course it had, but I had not realised that was the **only** reason
I was getting more results by connecting the serial cable :-o

I have been working away assuming that the Flash debug option was
using the serial port to mod the code!

BTW, Be wary of saving a few dollars with web 7 days.....they really
are rock bottom quality wise!

The Olimex stuff works fine, and well built, allthougth the V.regs
could do with a bit more heatsinking, I would reccomend using a
regulated supply @ about 7V.

--- In lpc2000@yahoogroups.com, "hodgejackiehank" 
<hodgejackiehank@y...> wrote:
> 
> The Olimex stuff works fine, and well built, allthougth the V.regs
> could do with a bit more heatsinking, I would reccomend using a
> regulated supply @ about 7V.

Regarding the voltage regulators on the Olimex board, please see my 
message #2737, as well as the messages from Tsvetan (of Olimex) 
referenced there.  Are you able to shed any additional light on this 
issue?

--- In lpc2000@yahoogroups.com, "g2100g" <g2100g@e...> wrote:
> --- In lpc2000@yahoogroups.com, "hodgejackiehank" 
> <hodgejackiehank@y...> wrote:
> > 
> > The Olimex stuff works fine, and well built, allthougth the V.regs
> > could do with a bit more heatsinking, I would reccomend using a
> > regulated supply @ about 7V.
> 
> Regarding the voltage regulators on the Olimex board, please see my 
> message #2737, as well as the messages from Tsvetan (of Olimex) 
> referenced there.  Are you able to shed any additional light on this 
> issue?

No, I have no latchup problems, or any particular problem with the
board per se. However there is a breadboard area on the card and
obviously it would be convinient if circuitry here could be supplied
from the 3v3 regulator. At the 9VAC max input and max ouptput of the
LM1117 this would be about 6.5W, way over what the regulator could
dissipate. My point was simply that with a bit more heatsink it would
be better.

BTW, removing J1 puts a 5V zener in series, but like I said, if you
are putting much stuff on the breadboard a regulated DC supply would
be more appropriate than an AC. Indeed I suppose one could argue that
if you do want to use the regulator to the max then use a regulated
'black box' rather than a simple transformer ;-)

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

From: "hodgejackiehank" <hodgejackiehank@...>
To: <lpc2000@yahoogroups.com>
Sent: Wednesday, July 14, 2004 7:59 AM
Subject: [lpc2000] Re: Crossworks and Ram debug


> --- In lpc2000@yahoogroups.com, "g2100g" <g2100g@e...> wrote:
> > --- In lpc2000@yahoogroups.com, "hodgejackiehank"
> > <hodgejackiehank@y...> wrote:
> > >
> > > The Olimex stuff works fine, and well built, allthougth the V.regs
> > > could do with a bit more heatsinking, I would reccomend using a
> > > regulated supply @ about 7V.
> >
> > Regarding the voltage regulators on the Olimex board, please see my
> > message #2737, as well as the messages from Tsvetan (of Olimex)
> > referenced there.  Are you able to shed any additional light on this
> > issue?
>
> No, I have no latchup problems, or any particular problem with the
> board per se. However there is a breadboard area on the card and
> obviously it would be convinient if circuitry here could be supplied
> from the 3v3 regulator. At the 9VAC max input and max ouptput of the
> LM1117 this would be about 6.5W, way over what the regulator could
> dissipate. My point was simply that with a bit more heatsink it would
> be better.

I'd just put an additional regulator on the breadboard area with the input
connected to the existing LM1117 input.

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