Let's see Byron:

The main problem is the flash write.

Using the bootloader from
http://www.microchipc.com/PIC16bootload/16F87xA/
I can send and receive data, I did the software UART and it's working great.

The same with Tiny bootloader.

When it's time to write the flash the trouble starts.
Another proble is the flash erasure. I hace to erase blocks of 32 or 64 I can't remember.

> My friend, when money is exchanging hands, location doesn't matter.
Yes, I know but I'm sure a user in USA can effort much more money than a user in Brazil.

> BTW just curious: why is getting a bootloader for the 819 so critical?
This is a temperature logger project I'm finishing and the dead line has passed already. I need to
be able to upgrade the code after I ship the units.

>One last thing: you are using an external crystal or resonator right?
No, I'm using internal osc but as I said the communication is working great.


Regards,

Octavio Nogueira

On Sat, 12 Jun 2004 10:56:10 -0400, Byron A Jeff <byron@CC.GATECH.EDU> escreveu:

> De: Byron A Jeff <byron@CC.GATECH.EDU>
> Data: Sat, 12 Jun 2004 10:56:10 -0400
> Para: PICLIST@MITVMA.MIT.EDU
> Assunto: Re: [PIC:] I was desperate, now I'm willing to pay for a bootloader
>
> On Sat, Jun 12, 2004 at 11:34:46AM -0300, Tato wrote:
> > I've tried to modify several bootloaders to work
> > with 16F819 and this one is almost working.
> > http://www.microchipc.com/PIC16bootload/16F87xA/
>
> What happened with Tiny? Did you try it? At 100 bytes long there can't
> be too much to debug. I assembled it for the 16F88 but I haven't gotten
> a chance to load/test it yet.
>
> >
> > I'm willing to pay for anyone who makes it to work,
> > or any other working with 16F819.
> >
> > I'm in Brazil so please do not ask a big amount of money.
>
> My friend, when money is exchanging hands, location doesn't matter.
>
> However don't panic. Come on back and explain what's happening. Maybe
> someone on the list can offer a simple fix.
>
> BTW just curious: why is getting a bootloader for the 819 so critical?
>
> One last thing: you are using an external crystal or resonator right? The
> nanowatt internal oscillator is subject to drift, so there are no guarantees
> that it'll remain stable enough for async serial interfacing.
>
> BAJ
>
> --
> http://www.piclist.com hint: The PICList is archived three different
> ways.  See http://www.piclist.com/#archives for details.
>
>
>

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