On Sat, Jan 01, 2011 at 12:55:36PM -0500, PICdude wrote:
> I'm using the 16F1936 a lot nowadays, so that would be nice to see... =20
> should you make it a commercial product, that is.

>=20

> Curious... since you're developing a product, why not use Microchip's
> MCP2200?

I'm not developing a product. I'm just trying to continue to support a
hobbyist community that have been using programmers like my Trivial LVP
Pic programmer over the years.

With the death of parallel ports, and to a large extent serial ports on PCs=
,=20
there's no out of the box interface that can be driven in software on a PC.

So this is my latest effort in the continual quest to find a way out of the
catch-22 of needing a programmer to program a PIC with a bootloader, so
that a programmer is not required for development. And finding a way to do
it with off the shelf components, which is why the MCP2200 isn't on my
radar. Also it doesn't come in DIP, which most hobbyist still need to get
started. Finally I'm unsure if there is a specific Linux driver for the
chip.

The standard USB to serial cable serves the dual purpose as the driver for
the "code dumper" and as the primary programming interface for the
bootloader. So it gets used all the time during development in my system.
They are cheap, available off the shelf, and have standard drivers for
every operating system.=20

This is a specific design for building out of junkbox parts quickly,
letting it do it's job of dumping a bootloader on the chip, and getting out
of the way.

I'm in good shape because it works with HVP. Just curious about why LVP is
having so many problems.

I did see one thing in the BusPirate programming code. There is definitely
a 33rd clock. I'm going to do some more testing with that presumption and
see if I can get it going.

BAJ

>=20
> HNY,
> -Neil.
>=20
>=20
>=20
> Quoting Byron Jeff <byronjeff@mail.clayton.edu>:
>=20
> > I'm in the process of working through a USB serial port based code dump=
er
> > for the the 16F193X/18F182X series of chips. So far I'm having pretty g=
ood
> > luck with the PL2303 based USB to serial converter that I got a hold of=
..
> > I'm using a current version of pyserial to drive the DTR, RTS, and TX
> > through a zener voltage conditioner and HCT04 inverters. CTS reads fine=
 as
> > feedback.
> >
> > ...
>=20
>=20
> --=20
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--=20
Byron A. Jeff
Department Chair: IT/CS/CNET
College of Information and Mathematical Sciences
Clayton State University
http://cims.clayton.edu/bjeff
--=20
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