Larry's Blog

Here is the latest on what I am doing with the PIC
and my problem in making PROGRAMMING SOFTWARE
to load programs on to the PIC.

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Coincidental with getting a bad cold and disorienting dreams with psuedo computer & electronic stuff woven in, I have considered it time to take
a tactical retreat and an assessment of where I am working with the
PIC microcontroller.

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I have tons of applications I am looking at .
Some are simple, others more complex
I talked with my son Jeff last night. He is the author of the book
“Hacking Tivo: the Expansion, Enhancement and Development Starter Kit “. We inspire each other discussing various
ideas.

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I would like to report great successes with my
experiments with the PIC16F628 micro-controller.
Thanks to help from guys like Bob Sweeney and a few other
guys like Mike Rioux of the QRA radio club,
a number of my programs are running smoothly.
One has a delay routine with 3 levels of loops
which can give me delays of up to 30 seconds.
Bob Sweeney warned me that the Watch Dog Timer could
be resetting my programs and I believe that was right.

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I have written a program which assembles
programs written in assembler code.
It is written in QBASIC and is called PICASM.BAS.
It produces a hex (hexadecimal notation) file
which can then be read by my PROGRAMMER
program PICLP542.bas, which loads the program serially
into the PIC.

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My first program for the PIC is a program
that blinks an led through pin RB1 (pin #7)
of the chip.
By the way, here is a pic of our chip.

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I have read out the data which
sits in the configuration word area of the chip (PIC16F628)
the chip ID for 2 diff speed chips was
hex 07C0
the config word for both was 3FFF
the first ID field for the 20 MHZ chip was
hex 1800
the config word area begins at
loc hex 2000

HI and hello world
join in the greatest fun of all
soon to come in this spot
programming the PIC microcontrollers
NOT – NOT – with the programmers provided
by the pros – but doing it yourself
depending on your knowledge of
electronics and programming
you can do it all yourself
program a complete COMPUTER
on a chip that costs approximately
$3 $3 yes $3
not $230 like sbc’s of the past -
microprocessors on pcb’s
dec 28,2003 I have not forgot to update
this entry. I am excited in my PIC programming
experiments and will be getting back to them shortly.
Stay tuned.
Jan 5, 2004
this is the very latest
I have succeeded in entering my 16 instruction
program onto the program memory (EEPROM)
of the PIC16F628.

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