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PIC Notes

Microchip PIC

Here are a few notes I would like to share with you about some things that I have
discovered about the Microchip PIC processors.

I have been very interested in the PIC24F parts particularly the 28 pin DIP parts.  
These parts give me the opportunity to use a bread board and experiment with the
chips.  I have also designed a board that takes care of some of the more difficult
things about the part that free you up to experiment.  This board has an interface
for the PICkit 2.  It also has a crystal and reset circuits built on.  On one side of the
board it has single in line pins that can be pushed into a bread board giving you
access to most of the pins of the part.  I have used this very board to implement
interfaces to RS232 level shifters, SD Cards, a USB host chip, and other interesting
parts.  See the order page if you want to purchase one of these boards.  They are
very inexpensive.

I/O pins of the PIC24F parts

The pins of the PIC24F parts have the ability to change their function.  You can
assign or set a pin to be the receive pin of UART 1 or the SDI.  This makes the
limited number of pins of the PIC24F parts very flexible.  I have created a program
that allows you to configure these pins using a graphical interface.  This program
generates some source code that you can put right in your PIC C program and it
will setup your pins for you.  It is a slick program and I'm letting you have it for free.  
Just let me know if there are any problems with it.

PIC24F pin association

UARTs of the PIC24F parts

This program automagically generates code to drive the UARTs of PIC24F parts.  It
can generate code for polled I/O or interrupts.  There are several options that you
can set that influences the generated code.  Enjoy.

UART code generation program