MC68HC812A4 Programs

Jonathan W. Valvano, 4/11/02

ICC12 file types (open with the ImageCraft Compiler)
  file.c is a ICC12 6812 C source file (ASCII text file)
  file.h is a ICC12 6812 C header file (ASCII text file)
  file.s is a ICC12 6812 assembly source file (ASCII text file)
  file.asm is a ICC12 6812 assembly source file (ASCII text file)

TExaS file types (open with the simulator)
  file.uc is a TExaS microcomputer file
  file.io is a TExaS input/output file
  file.scp is a TExaS oscilloscope file

Other file types
  file.XLS is a spreadsheet file (open with using Excel)
  file.bat is a DOS batch file (ASCII text file))
  file.zip is an achival file (you could try WinZip, see winzip.com)

To download all the programs in zip format.

Name Description Needs

adtest.c Main program for the 8-bit ADC, samples analog signal and prints results, can be simulated with TExaS hc12.h sci12.h sci12.c sciutil.c adtest.uc adtest.io

b.bat Batch file to launch Kevin Ross's BDM12 software db12.exe (from Kevin Ross)

bitfifo.c First in first out queue that puts and gets individual bits. It has a bug and will be used in the debugging lab. bitfifo.h

dab8043.c Bit-banging serial interface to a DAC8043 12-bit DAC dac8043.h

dac8043.c SPI interface to a DAC8043 12-bit DAC dac8043.h

dactest.c Main program for the SPI/DAC8043 12-bit DAC interface hc12.h dac8043.h dac8043.c

das.c Simple data acquisition system hc12.h

dftest.c FIR digital filter example, with MACQ hc12.h sci12.h sci12.c sciutil.c

ds1620.c Bit-banging serial interface to a ds1620

ds1620b.c SPI interface to a ds1620

dstest.c Main program for the ds1620 bit-banging interface hc12.h sci12.h ds1620.h sci12.c sciutil.c ds1620.c

dstestb.c Main program for the ds1620 SPI interface hc12.h sci12.h ds1620.h sci12.c sciutil.c ds1620b.c

example.c Simple Example hc12.h cop12.h cop12.c vectors.c

extmem.c Extended memory access for DPAGE PPAGE hc12.h

fnctpt.c examples of function pointers

fsm12.c Complicated Moore FSM hc12.h

fuzmotor.c Fuzzy Logic motor controller fuzzy.asm fuzmotor.uc fuzmotor.io fuzmotor.scp

hc12.h 6812 IO Ports

heap.c Fixed Block Memory manager heap.h

high.c C level program, showing linkage to assembly language code low.s

huff.c Debugging lab example, Huffman Code (bitfifo.c has a bug in it) hc12.h sci12.h bitfifo.h bitfifo.c sci12.c sciutil.c

huff1.c Example: testing of PutBit hc12.h

interp12.c Linked List Interpreter hc12.h sci12.h sci12.c sciutil.c

Lab17.zip Lab 17 starter files

lcd12.c 1 line by 16 character LCD using a HD44780 lcd12.h

lcd14543.c LCD interface using a MC14543 hc12.h

lcdtest.c Main program for a 1 line by 16 character LCD Display hc12.h lcd12.h lcd12.c

led1.c A simple example that flashes the PT6 LED without interrupts hc12.h

led2.c PT6 LED flashes on and off using timer overflow interrupts hc12.h

llfifo.c Dynamically allocated linked list FIFO llfifo.h heap.h heap.c

lltest.c Main program with dynamic linked lists, simple heap hc12.h sci12.h llfifo.h llfifo.c sci12.c sciutil.c

lpf.xls Excel spreadsheet to help design a Butterworth LPF

master.c Main program for a RS485 half-duplex multiport network hc12.h sci0.h sci1.h sci0.c sci1.c slave.c

max1247.c Bit banging interface to a Max1247 ADC

mealy12.c Mealy FSM hc12.h

memtest.c External RAM interfaces hc12.h memtest2.c memtest3.c

moore12.c Moore FSM hc12.h

moore2.c Moore FSM hc12.h

oc3.c Periodic Interrupt using TOC3 oc3.h

oc3test.c Main program for an OC3 interface hc12.h oc3.h oc3.c

pwmod.c Pulse Width Modulation using TC3 hc12.h sci12.h sci12.c sciutil.c

rti.c Real Time Interrupt example hc12.h

rxfifo.c Pointer implementation of the receive FIFO rxfifo.h

sci0.c Simple I/O routines to sci0 serial port sci0.h

sci1.c RS485 half-duplex multiport network sci1.h

sci12.c Simple I/O routines to sci0 serial port sci12.h sciutil.c

sci12a.c Serial port I/O routines, interrupt synchronization rxfifo.h txfifo.h rxfifo.c txfifo.c sci12.h sciutil.c

scidemo.c This is a good starter file if you use serial I/O hc12.h sci12.h sci12.c or sci12a.c sciutil.c

sfifo.c FIFO using semaphores sfifo.h spin.h spin.c

simple.c Simple function call hc12.h

slave.c Main program for a delay echo for a half-duplex sci1 network hc12.h sci1.h sci1.c master.c

spin.c Spinlock binary semaphore spin.h

spin12.c Spinlock binary semaphore without disabling interrupts spin12.h

test.c Simple function call hc12.h

therm.xls Excel spreadsheet to help design thermistor bridge circuit

thread3.c Statically allocated thread example hc12.h sci12.h sci12a.c sciutil.c

thread4.c Statically allocated thread example hc12.h sci12.h sci12a.c sciutil.c

toflop.bat Copy files to floppy

tohd.bat Copy files to hard drive

txfifo.c Pointer implementation of a FIFO txfifo.h

usqrt.c Unsigned 16 bit squareroot hc12.h sci12.h sci12.c sciutil.c

vectors.c Specifies the interrupt vectors

vram.c example of how to access external RAM

These programs accompanies the book "Embedded Microcomputer Systems: Real Time Interfacing", Brooks-Cole, copyright (c) 2000, Jonathan W. Valvano. For more information about the book.

ICC12 Copyright (c) 1994-1998 by ImageCraft, Richard Man, and Christina Willrich for more information about ICC12 see http://www.imagecraft.com

You may use these files without restrictions, but there is no guarantee that they work.

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Name	Description	Needs
adtest.c	Main program for the 8-bit ADC, samples analog signal and prints results, can be simulated with TExaS	hc12.h sci12.h sci12.c sciutil.c adtest.uc adtest.io
b.bat	Batch file to launch Kevin Ross's BDM12 software	db12.exe (from Kevin Ross)
bitfifo.c	First in first out queue that puts and gets individual bits. It has a bug and will be used in the debugging lab.	bitfifo.h
dab8043.c	Bit-banging serial interface to a DAC8043 12-bit DAC	dac8043.h
dac8043.c	SPI interface to a DAC8043 12-bit DAC	dac8043.h
dactest.c	Main program for the SPI/DAC8043 12-bit DAC interface	hc12.h dac8043.h dac8043.c
das.c	Simple data acquisition system	hc12.h
dftest.c	FIR digital filter example, with MACQ	hc12.h sci12.h sci12.c sciutil.c
ds1620.c	Bit-banging serial interface to a ds1620
ds1620b.c	SPI interface to a ds1620
dstest.c	Main program for the ds1620 bit-banging interface	hc12.h sci12.h ds1620.h sci12.c sciutil.c ds1620.c
dstestb.c	Main program for the ds1620 SPI interface	hc12.h sci12.h ds1620.h sci12.c sciutil.c ds1620b.c
example.c	Simple Example	hc12.h cop12.h cop12.c vectors.c
extmem.c	Extended memory access for DPAGE PPAGE	hc12.h
fnctpt.c	examples of function pointers
fsm12.c	Complicated Moore FSM	hc12.h
fuzmotor.c	Fuzzy Logic motor controller	fuzzy.asm fuzmotor.uc fuzmotor.io fuzmotor.scp
hc12.h	6812 IO Ports
heap.c	Fixed Block Memory manager	heap.h
high.c	C level program, showing linkage to assembly language code	low.s
huff.c	Debugging lab example, Huffman Code (bitfifo.c has a bug in it)	hc12.h sci12.h bitfifo.h bitfifo.c sci12.c sciutil.c
huff1.c	Example: testing of PutBit	hc12.h
interp12.c	Linked List Interpreter	hc12.h sci12.h sci12.c sciutil.c
Lab17.zip	Lab 17 starter files
lcd12.c	1 line by 16 character LCD using a HD44780	lcd12.h
lcd14543.c	LCD interface using a MC14543	hc12.h
lcdtest.c	Main program for a 1 line by 16 character LCD Display	hc12.h lcd12.h lcd12.c
led1.c	A simple example that flashes the PT6 LED without interrupts	hc12.h
led2.c	PT6 LED flashes on and off using timer overflow interrupts	hc12.h
llfifo.c	Dynamically allocated linked list FIFO	llfifo.h heap.h heap.c
lltest.c	Main program with dynamic linked lists, simple heap	hc12.h sci12.h llfifo.h llfifo.c sci12.c sciutil.c
lpf.xls	Excel spreadsheet to help design a Butterworth LPF
master.c	Main program for a RS485 half-duplex multiport network	hc12.h sci0.h sci1.h sci0.c sci1.c slave.c
max1247.c	Bit banging interface to a Max1247 ADC
mealy12.c	Mealy FSM	hc12.h
memtest.c	External RAM interfaces	hc12.h memtest2.c memtest3.c
moore12.c	Moore FSM	hc12.h
moore2.c	Moore FSM	hc12.h
oc3.c	Periodic Interrupt using TOC3	oc3.h
oc3test.c	Main program for an OC3 interface	hc12.h oc3.h oc3.c
pwmod.c	Pulse Width Modulation using TC3	hc12.h sci12.h sci12.c sciutil.c
rti.c	Real Time Interrupt example	hc12.h
rxfifo.c	Pointer implementation of the receive FIFO	rxfifo.h
sci0.c	Simple I/O routines to sci0 serial port	sci0.h
sci1.c	RS485 half-duplex multiport network	sci1.h
sci12.c	Simple I/O routines to sci0 serial port	sci12.h sciutil.c
sci12a.c	Serial port I/O routines, interrupt synchronization	rxfifo.h txfifo.h rxfifo.c txfifo.c sci12.h sciutil.c
scidemo.c	This is a good starter file if you use serial I/O	hc12.h sci12.h sci12.c or sci12a.c sciutil.c
sfifo.c	FIFO using semaphores	sfifo.h spin.h spin.c
simple.c	Simple function call	hc12.h
slave.c	Main program for a delay echo for a half-duplex sci1 network	hc12.h sci1.h sci1.c master.c
spin.c	Spinlock binary semaphore	spin.h
spin12.c	Spinlock binary semaphore without disabling interrupts	spin12.h
test.c	Simple function call	hc12.h
therm.xls	Excel spreadsheet to help design thermistor bridge circuit
thread3.c	Statically allocated thread example	hc12.h sci12.h sci12a.c sciutil.c
thread4.c	Statically allocated thread example	hc12.h sci12.h sci12a.c sciutil.c
toflop.bat	Copy files to floppy
tohd.bat	Copy files to hard drive
txfifo.c	Pointer implementation of a FIFO	txfifo.h
usqrt.c	Unsigned 16 bit squareroot	hc12.h sci12.h sci12.c sciutil.c
vectors.c	Specifies the interrupt vectors
vram.c	example of how to access external RAM