Subject:
Re: [gnupic] WISP628 programmer layout design?
From:
"George M. Gallant, Jr." ####@####.####
Date:
5 Feb 2006 22:18:51 +0000
Message-Id: <1139177918.3478.23.camel@scuba.home.net>
Jay,
I have a home brew serial port programmer based on a 18F1320. It differs
from the Wisp-628
in that it uses an external supply to generate 13V and 5V and it only
knows how to program
18f1320 and 18f252 parts. I use Linux and put the burn command in the
"make" file which
provides a seamless path to running PIC chip. I built the first board
with an iron on transfer
film system in the garage and purchased a couple of blank boards last
year.
I used a WARP-13A to create a 16F628 based programmer which only
programmed 18F1320's
to bootstrap the current design. Tried to implement the 16F burn
procedures but gave up.
The schematic, artwork, embedded code, and host code could be available
with the understanding
that there is NO support.
George
On Sun, 2006-02-05 at 13:38 -0800, Jay Dagenais wrote:
> Yeah, sorry about that, I guess upon further review of the page this is
> correct and I should not have even asked- I guess I will have to depend on
> my breadboarding for now. I do have a coupld of perhaps silly questions
> regarding the schematic, such as what are the lines which break with a
> circle supposed to run into? Are these to a positive common source which
> they all meet/branch from? I assume that the arrows pointing downwards are
> the common ground lines? So this programmer gets its power from the hosting
> computer, no? and the 13V needed is generated from the? I think that I need
> a bit of an explanaition-more than what the page describes, because I don't
> know what the charge pump is, looks like a coupld of caps to me and a coupld
> of diodes for protection, but I don't know anything so...You mention that
> you have a breadboarded version already, how many types of PIC's have you
> programmed with it so far, and were there changes to the design that were
> necessary to implement programming of certain types? One last question I
> have regards the type of PIC used in the programmer, does this PIC have to
> be a 16F628, or could one use a PIC18F252 for example? The reason I ask is
> that I have one of those EZ-controllers, which is a 18F252 with a serial
> bootloader on board, and is able to be programmed with a PC and cable. I was
> thinking that I may be able to use this for the PIC in the programmer untill
> I can get a coupld of PIC's loaded, then swap out or whatever? Alternatly,
> does anyone know if these modules are able to program PIC's other than the
> onboard 18F? There is the programming port(three pins) then up atthe top
> there are two other sets of three, with an RX and TX, so this could be
> doable, no?
>
>
> >From: Xiaofan Chen ####@####.####
> >Reply-To: ####@####.####
> >To: ####@####.####
> >Subject: Re: [gnupic] WISP628 programmer layout design?
> >Date: Sat, 4 Feb 2006 09:41:30 +0800
> >
> >On 2/4/06, Jay Dagenais ####@####.#### wrote:
> > > Hi all, I hope that this is not too off topic for the forum, but am
> >seeking
> > > a board layout file for the WISP628 PIC programmer design that is
> >available
> > > online freely and for sale as a built unit, the site provides virtually
> > > everything but no layout file for the schematic.
> >
> >You are not allowed to post the layout online. Please read the
> >"Legal notes" section from Wouter's website.
> >http://www.voti.nl/wisp628/index_1.html
> >
> >It specificly says that you can not provide the deign to the public.
> >"It is allowed to design and make a Wisp628 PCB, but it is not allowed to
> >have it made for you by a PCB company, nor is it allowed to sell such a
> >PCB, or to provide the PCB design to the general public."
> >
> >Anyway, I do not think it is too difficult to build you own Wisp628A
> >using the schematics. To be honest, my wisp628a is still on a breadboard
> >with flying wires (a shame, I know) but it simply works.
> >
> >Be careful with the serial cable though, low quality cable will have
> >problem with communication.
> >
> >The best software to go with Wisp628A is xwisp2 from Rob Hamerling.
> >http://www.robh.nl/picsoft.php
> >
> >Regards,
> >Xiaofan
> >
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