Lpc2000

Anders,

I actually have the P2106 board and not the 2106mt board. I 
originally did not think the problem with the boot loader was 
anything hardware. 

I'm not sure if this will sort out the problem with my board, as 
there is no need to have the voltage as high as 12v (as far as i can 
see).
I will still give this a go though.

You say at 9 v your Tx line is 0v. What is it at 12v?
Just trying to tie things together here. At work at the moment and 
can't test things till I get home.

Thanks for all your help.

Nick

--- In lpc2000@yahoogroups.com, "kjellberg_anders" <akj@...> wrote:
>
> Nick,
> 
> I get 0V on the TX pin at 9V.
> It is clear from the schematic that the board won't work at 9V. I 
> was also a bit afraid of upping the voltage as the current 
increased 
> a lot. The trick is to start at 12V since the regulators draw very 
> much current when fed below nominal voltage. After the rectifying 
> bridge there is 7805(and the schematic says 12V there!). There is 
> also a 1N4733 5V zener-diode. Thus, att 9V there's only 4V left for 
> the LM1117 3.3V regulator which has a minimum voltage drop of about 
> 1.0-1.2V minimum (4.3-4.5V in). The core may get the correct 
voltage 
> but the peripherals won't. 
> 
> Cheers
> /Anders
> 
> 
> 
> 
> 
> --- In lpc2000@yahoogroups.com, "nma550n" <nma550n@> wrote:
> >
> > Anders,
> > 
> > Great to hear you got your board working! I have not tried upping 
> the 
> > voltage as yet, will give it a try later. The only thing that 
> stopped 
> > me thinking that the voltage would make any differenct was that 
> the 
> > board was getting 1.8v for the core and 3.3v for the peripherals. 
> > 
> > Are you saying it requires 12v for RS232?
> > 
> > Also, what is voltage on your Tx pin on the LPC2106 (at default)?
> > Regards,
> > 
> > Nick
> > 
> > 
> > --- In lpc2000@yahoogroups.com, "kjellberg_anders" <akj@> wrote:
> > >
> > > 
> > > Nick,
> > > 
> > > It actually works now! Olimex states 9VDC/6VAC for powering the 
> > > board, but when I had a look at the closer look at the 
schematic 
> it 
> > > became obvious that it should be 12V... Let me know if this 
> solves 
> > > your problem as well. Otherwise I could post my LPC utility 
> > settings.
> > > 
> > > regards
> > > /Anders
> > > 
> > > 
> > > 
> > > 
> > > --- In lpc2000@...m, "nma550n" <nma550n@> wrote:
> > > >
> > > > Anders,
> > > > 
> > > > You had any luck yet?
> > > > 
> > > > Cheers,
> > > > 
> > > > Nick
> > > > 
> > > > --- In lpc2000@yahoogroups.com, "kjellberg_anders" <akj@> 
> wrote:
> > > > >
> > > > > 
> > > > > Nick,
> > > > > 
> > > > > Thanks for letting me know about your LPC 2106 problems. 
> Since 
> > > I'm 
> > > > > working from home today I do not have any other cables but 
> I'll 
> > > get 
> > > > > back to you as soon as I have tried a different one. As I 
> wrote 
> > > > > earlier, I have tested different baudrates and made sure 
> that 
> > > the 
> > > > > comport was correctly setup. I'll check that with a scope 
> > > tomorrow. 
> > > > > 
> > > > > Best regards 
> > > > > /Anders
> > > > > 
> > > > > 
> > > > > -- In lpc2000@yahoogroups.com, "nma550n" <nma550n@> wrote:
> > > > > >
> > > > > > Anders,
> > > > > > 
> > > > > > I am also having problems with the Philips LPC2000 flash 
> > > utility 
> > > > > > (olimex LPC2106), and was just about to post a message on 
> > this 
> > > > > board 
> > > > > > to see if the problem lies with my development board.
> > > > > > I am just trying to upload the simple blink LED hex file 
> to 
> > > > flash, 
> > > > > > and it just comes up with cannot communicate. I too have 
> > tried 
> > > > > many 
> > > > > > different com ports, jumper settings and different reset 
> > > > > conditions, 
> > > > > > to no avail. This is the first time I have tried to use 
> this 
> > > > > board, 
> > > > > > so i have no idea if the thing works.
> > > > > > 
> > > > > > I am almost certain the problem does not lie with the 
> Philips 
> > > > > LPC2000 
> > > > > > flash utility as I have scoped out the Rx signal (3.3v 
> low, 
> > 0v 
> > > > > high) 
> > > > > > on the board and found it to receive data. 
> > > > > > However, my Tx pin on the chip is always at ground and 
> does 
> > > > > nothing.
> > > > > > 
> > > > > > Does anyone know if Tx should be held at 0v???
> > > > > > 
> > > > > > Not sure if this will help you Anders, but just to let 
you 
> > > know 
> > > > > your 
> > > > > > not alone.
> > > > > > 
> > > > > > cheers,
> > > > > > 
> > > > > > Nick
> > > > > > 
> > > > > > > --- In lpc2000@yahoogroups.com, "Anders Kjellberg" 
> <akj@> 
> > > wrote:
> > > > > > > >
> > > > > > > > Hi,
> > > > > > > > I'm trying to establish connection with Philips Flash 
> > > Utility 
> > > > > and 
> > > > > > > an Olimex 2106 mt board without success. TheBSL jumper 
> is 
> > > > > shorted 
> > > > > > > and the frequency set at 14745kHz (14.7456MHz). 
> Different 
> > > > > baudrates 
> > > > > > > have been tried without success. I am not sure about 
the 
> > > > DTR/RTS 
> > > > > > > settings however. Also I may be using the wrong RS232 
> > cable. 
> > > > > Null 
> > > > > > > modem or not? I'll have to check that. I intend to use 
> the 
> > > > > > > bootloader and ICCARM. Any ideas that may help?
> > > > > > > > 
> > > > > > > > Thanks in advance!
> > > > > > > > /Anders
> > > > > > > > 
> > > > > > > > [Non-text portions of this message have been removed]
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>