thanks a lot, the remarks from Andre sound very promissing. I will check this as soon as I get
home and I will inform you all about my findings.
Maybe my knowledge of the German language is that bad that I've overread this in the "Handbuch"
however I will try this out.
Maybe I have to start a newby section on my homepage since I'm really new with this sort
of devices. I searched the archive and found a lot of messages dealing with these problems but
I did not find specifics on what I should or should not see on the unit.
I will keep you posted on my proceedings.
Noch mahl vielen Dank und ich hoffe dass jetzt alles klappt.
Gr, Bart
> Hallo Bart & Martin,
>
> > maybe you should remove the unit from the board and use it alone.
> > The serial can be connected with applied cable directly on the unit too.
> > Use jumpers to activate the reset and boot, then remove reset jumper,
> > and after 30 seconds remove boot jumper.
> >
> > If it continues to run a program after that procedure, you have a broken unit.
> > If not, the boot key is not correctly wired on the "Regler Board".
>
> The boot-key is correctly wired on the CC2-ReglerBoard
> I have uploaded the OS many times on CC2-Units mounted on the
> CC2-ReglerBoard. So there can not be the problem.
> The only different thing is that the reset takes about one second more time
> because of the onboard watchdog-circuit.
> But this would only mean that you must press the boot-key a little bit longer.
>
>
> > > > Tnx Martin for your response, the unit doesn't show a blank screen, it just stays in hostmodus
> > > > (when it was in hostmodus before I go through the bootroutine)
> > > > or it resets and runs a programm (when the unit was running a programm).
> > > > Whatever I do, I never get a blank screen.
>
> Bart, here you misunderstood Martin. There will never be a blank screen !!
> (Only, if you press boot before connecting the supply)
> If you try to set the boot-mode there will be
> e.g. the unit was in hostmode before you set the boot-mode there will
> further displayed the message "HOSTMODE".
> If you try to set the boot-mode and the message in the display dosen't
> change then you are in the boot-mode.
>
> > > > >
> > > > > The voltage level of the boot line seems to be OK for me.
> > > > > TTL-low level is below 0,8 Volt. And 2,5 Volt is definitely more than this.
> > > > >
>
> The boot-pin(BSL) is shared with the address-bus for the RAM and FLASH.
> So you will measure 2,5 volts, but in real there are 0 and 5 volts, because
> there is activity on the address-bus.
>
> regards André H.
>
>
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Re: Bootstrap modus (von bart meijer - 3.04.2003 18:19)