gnupic: Re: [gnupic] need pic18fxxx programmer!!
Subject:
RE: [gnupic] need pic18fxxx programmer!!
From:
"Chen Xiao Fan" ####@####.####
Date:
24 Jan 2006 00:24:11 +0000
Message-Id: <7D4AB72251D4D949AB2732ABEABDA54F12FFE7@PFSG-MX1.ap.p-f.biz>
> From: Jay Dagenais
> Sent: Tuesday, January 24, 2006 3:28 AM
>
> One thing that I am noticing in common with these available
> programmer designs, is that they mostly all centre around the
> use of a 16series PIC for the programmers firmware, I am
> wondering is I am able to use any PIC for this purpose, does
> it have to be a 16 series PIC or can I use an 18 series
> with ease? I ask because I only have one type of PIC16 and it
> isn't any of the types I have seen used so far(PIC16F917).
You can use any reasonable powerful PIC to do it if you have
the time and expertise. For example, you can port Wisp628A
to use the 18F instead of using the 16F628A. Programmers
like PICkit 2 is indeed using 18F (18F2550).
The point is that it is not easy to develop a PIC based
programmer. So there is no easy way out. The firmware itself
is quite complicated. I think it is better to leave them to
the pros.
You do not need a PIC actually if you build those simple
programmers, like those described here:
http://pikdev.free.fr/hardware.html
> Could I use a software based programmer to load the firmware
> into this PIC, and then use the PIC to build tha hardware
> programmer for the 18series? Does this seem like
> a sensable idea here, or is there an easier way for me to go?
> Again, thanks fo the help with this!
There is no "software based programmer", no matter how good the
software is, the software itself will not program the PIC. ;-)
There are simple programmer you can build. You can use it
to program a 16F628A and then build another programmer like
Wisp628A. So far I think Wisp628A is the easiest PIC based
programmer to build. Beyond that I would tend to buy a
ready-made programmer. That is why I bought the PICkit 2
instead of building it.
Regards,
Xiaofan
