Lpc2000

The automatically switching can be easily achieved by using a couple of
transistors, an RC led that can hold a transistor turned on for approx 5mS
shorting the P0.14 to ground one could tie the RST line to one of the RS232
control signals from the PC and write an ISP program to control the
transistor..

regards
lasse m.

-----Oprindelig meddelelse-----
Fra: capiman@... [mailto:capiman@...]
Sendt: 5. januar 2004 11:12
Til: lpc2100@yahoogroups.com
Emne: Re: [lpc2100] Small Problems with ISP Utility -> Solutions / self
written ISP utility ?


Hello Leon,

i am using it meanwhile completely with 115200 (using a MAX232 at 5V)
but everytime i want to upload something i restart the ISP utility
completely new.
Since this no errors in transfer.
(But i must say i found a bug in soldering my SUB-D connector. One cable
makes a short when i move position of the connector...)

But of course the left open COM-Port by Philips ISP util makes my thinking
about other ways:
What about a ISP util which uses two more RS232 lines to also control RESET
and enable booting.
So the PC tool itself can reset the LPC210x, switch to boot mode, upload,
and when everything is fine, do a reset again, switch off boot mode and
reset (to start the just developed programm)...

What do you all think about this ? Could be a convenient way...
I think i should start to write an ISP util, if no one else has done it
before (want to avoid duplicate programming, time is rare...)

Greetings,

           Martin

----- Original Message -----
From: "Leon Heller" <leon_heller@...>
To: <lpc2100@yahoogroups.com>
Sent: Monday, January 05, 2004 11:01 AM
Subject: Re: [lpc2100] Small Problems with ISP Utility -> Solutions / self
written ISP utility ?


>
> ----- Original Message -----
> From: "Hugh O'Keeffe" <hugh.okeeffe@...>
> To: <lpc2100@yahoogroups.com>
> Sent: Monday, January 05, 2004 9:52 AM
> Subject: RE: [lpc2100] Small Problems with ISP Utility -> Solutions / self
> written ISP utility ?
>
>
> >
> > Hi Martin,
> >
> >
> > The LPC2xxx Flash Boot Loader (FBL) firmware appears to have trouble on
> > certain PCs with the autobaud synchronisation at high baud rates. If you
> > get comms problems at 115K/bs then lower this value.  Also, reset your
> > LPC2xxx board every time prior to connection to the PC.
>
> I can't get it running any faster than 38.4 k
>
> Leon
> --
> Leon Heller, G1HSM
> Email: aqzf13@...
> My low-cost Philips LPC210x ARM development system:
> http://www.geocities.com/leon_heller/lpc2104.html
>
>
>
> Yahoo! Groups Links
>
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>
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>




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