Motorola CME-12D60 User manual

2000 2813 Industrial Ln. •Garland, TX 75041 •[phone] FAX [phone]
email: [email protected] •web: http://www.axman.com
xiom
anufacturing
CME-12D60
Development Board for Motorola
68HC912D60 Microcontroller

2
CONTENTSCONTENTS
GETTING STARTED............................................................................................3
Installing the Software.....................................................................3
Board Startup..................................................................................3
Support Software ............................................................................4
Software Development....................................................................4
TUTORIAL............................................................................................................5
Creating source code......................................................................5
Assembling source code.................................................................6
Running your application ................................................................7
Programming Flash EEPROM.........................................................8
MEMORY MAP.....................................................................................................9
CONFIG SWITCH...............................................................................................10
JUMPERS...........................................................................................................11
MON-SEL JUMPER ......................................................................11
PG_PULL / PH_PULL JUMPERS.................................................11
JP1 Oscillator Select JUMPER.....................................................11
PORTS AND CONNECTORS ............................................................................12
LCD_PORT...................................................................................12
KEYPAD........................................................................................12
MCU_PORT..................................................................................13
CAN_PORT...................................................................................13
COM1............................................................................................14
COM2............................................................................................14
ANALOG PORT ............................................................................14
BUS_PORT...................................................................................15
BDM-IN .........................................................................................15
TROUBLESHOOTING .......................................................................................16
TABLES..............................................................................................................18
TABLE 1. LCD Command Codes.................................................18
TABLE 2. LCD Character Codes..................................................18
TABLE 3. Mon12 Monitor Commands..........................................19

3
GETTING STARTED
The Axiom CME-12D60 single board computer is a fully assembled, fully functional
development system for the Motorola 68HC912D60 microcontroller, complete with wall plug
power supply and serial cable. Support software for this development board is provided for
Windows 95/98 and NT operating systems.
Follow the steps in this section to get started quickly and verify everything is working correctly.
Installing the Software
1. Insert the Axiom 68HC12 support CD in your PC. If the setup program does not start, run
the file called "SETUP.EXE" on the disk.
2. Follow the instructions on screen to install the support software onto your PC.
You should at minimum install the AxIDE for Windows software.
3. The programming utility “AxIDE” requires you to specify your board. You should select
"CME12D60" for this board.
Board Startup
Follow these steps to connect and power on the board. This assumes you're using the
provided AxIDE utility (installed in the previous section) or a similar communications terminal
program on your PC. If you're using a different terminal program than the one provided, set
it's parameters to 9600 baud, N,8,1.
1. Make certain the CONFIG SWITCH is set as follows:
1234 567 8
ON ON ON ON OFF ON OFF OFF
2. Connect one end of the supplied 9-pin serial cable to a free COM port on your PC.
Connect the other end of the cable to the COM1 port on the CME-12D60 board.
3. Apply power to the board by plugging in the power adapter that came with the system.
4. If everything is working properly, you should see a message to “PRESS KEY TO START
MONITOR…” in your terminal window. Press the ENTER key and you should see:
Axiom MON12 - HC12 Monitor / Debugger
> _
5. Your board is now ready to use! If you do not see this message prompt, or if the text is
garbage, see the TROUBLESHOOTING section at the end of this manual.

4
Support Software
There are many useful programs and documents on the included HC12 support CD that can
make developing projects on the CME-12D60 easier. You should browse the disk and copy
anything you want to your hard drive.
The flash programming utility (AxIDE) communicates with the board via its COM1 port and the
supplied cable. This program also includes a simple terminal for interfacing with other
programs running on the CME-12D60, such as Mon12, and information from your own
programs that send output to the serial port.
Also on the disk is a free assembler, example source code, and other tools to get you started.
Software Development
Software development on the CME12B32 can be performed using either the Mon12 monitor
utility installed in EPROM (sockets U6/U7), a third party debugger (NoICE, CodeWarrior, etc.)
or a Background Debug Module (BDM) connected to the BDM-IN connector. Any of these
tools can be used to assist in creating and debugging your program stored in RAM (see
Memory Map).
After satisfactory operation running under a debugger, your program can be written to Internal
Flash Memory by changing the CONFIG SWITCH settings and programming it using one of
the included programming utilities. Your program will then run automatically whenever the
board is powered on or RESET is applied.
Option jumpers and switches on the board allow for easy transition from one memory type to
another and restoring an operating monitor or debugger.

5
TUTORIAL
This section was written to help you get started developing software with the CME-12D60
board. Be sure to read the rest of this manual as well as the documentation on the disk if you
need further information.
The following sections take you through the complete development cycle of a simple "hello
world" program, which sends the string "Hello World" to the serial port.
Creating source code
You can write source code for the CME-12D60 board using any language that compiles to
Motorola 68HC12 instructions. Included on the software disk is a free Assembler.
You can write your source code using any ASCII text editor. You can use the free EDIT or
NOTEPAD programs that come with your computer. Once your source code is written and
saved to a file, you can assemble or compile it to a Motorola S-Record (hex) format. This type
of output file usually has a .MOT, .HEX or .S19 file extension and is in a format that can be
read by the programming utilities and programmed into the CME-12D60 board.
It's important to understand your development board's use of Memory and Addressing when
writing source code so you can locate your code at valid addresses. For example, when in
debug mode, you should put your program CODE in External RAM. In assembly language,
you do this with ORG statements in your source code. Any lines following an ORG statement
will begin at that ORG location, which is the first number following the word ORG, for example:
ORG $1000. You must start your DATA (or variables) in a RAM location unused by your
program, for example: ORG $0000.
In “debug mode” you’ll be using a debugger utility (Mon12, NoICE, etc) which will handle both
interrupts (reset, timers, etc) and the STACK. When finished debugging, you must add code
to your application to handle the STACK and Interrupt vector initialization. Set the stack
somewhere at the top of your available RAM, for example $7FE, in assembly this would be
LDS #$7FE. Also define the RESET vector address, $FFFE, at the end of your program.
For example:
ORG $FFFE
FDB START ; where START is the beginning label of your program
A look at the example programs on the disk can make all of this clearer. If you're using a
compiler instead of an assembler, consult the compiler documentation for methods used to
locate your code, data and stack.

6
Assembling source code
An example program called “HELLO.ASM” is provided under the \EXAMPLES\D60 directory
of the CD and if you installed AxIDE, under that programs \EXAMPLE\HC12D60 directory.
You can assemble your source code using command line tools under a DOS prompt by typing:
AS12 HELLO.ASM –LHELLO
Most compilers and assemblers allow many command line options so using a MAKE utility or
batch file is recommended if you use this method. Run AS12 without any arguments to see all
the options, or see the AS12.TXT file on the disk.
The programming utility AxIDE provided with this board contains a simple interface to this
assembler. Use it by selecting "Build" from its menu. This will prompt you for the file to be
assembled. NOTE: You must select your board from the pull down menu first, or it may not
build correctly.
DO NOT use long path names (> 8 characters). The free assembler is an old DOS tool that
does not recognize them.
If there are no errors in your source code, 2 output files will be created:
HELLO.S19 a Motorola S-Record file that can be programmed into memory
HELLO.LST a common listing file which shows the relationship between source
and output
The listing file is especially helpful to look at when debugging your program. If your program
has errors, they will be displayed and no output will be generated, otherwise the listing file will
be displayed.
If you prefer a windows integrated programming environment, try the Motorola MCU-EZ tools.
Refer to the MCU-EZ documentation on the disk for more information.
Also, a port for the free GNU C compiler and tools for the HC12 is available on the CD under
\Shareware and also online at www.gnu-m68hc11.org.

7
Running your application
After creating a Motorola S-Record file you can "upload" it to the development board for a test
run. The provided example “HELLO.ASM” was created to run from RAM so you can use the
Mon12 Monitor to test it without programming it into Flash.
If you haven’t done so already, verify that the CME-12D60 board is connected and operating
properly by following the steps under “GETTING STARTED” until you see the Mon12 prompt,
then follow these steps to run your program:
1. Press and release the RESET button on the CME-12D60 board. You should see the
PRESS ANY KEY message. Hit the return key ↵to get the monitor prompt.
2. Type LOAD ↵↵
This will prepare Mon12 to receive a program.
3. Select Upload and when prompted for a file name select your assembled program file in s-
record format that was created in the previous section called: HELLO.S19
Your program will be sent to the board thru the serial port.
4. When finished loading you will see the > prompt again. Type GO 1000 ↵↵
This tells Mon12 to execute the program at address $1000, which is the start of our test
program.
5. If everything is working properly you should see the message “Hello World” echoed back
to your terminal screen. Press RESET to return to the monitor.
6. If you do not get this message, see the TROUBLESHOOTING section in this manual
You can modify the hello program to display other strings or do anything you want. The
procedures for assembling your code, uploading it to the board and executing it remain the
same. Mon12 has many features such as breakpoints, assembly/disassembly, memory dump
and modify and program trace. Type HELP at the Mon12 prompt for a listing of commands or
consult the Mon12 documentation on the disk for more information.
For a more powerful debugger with many advanced features such as source level debugging,
you can use the NoICE debugger software. A full featured demo version is provided on the
CD, which you can use to get started. NOTE: To use this program instead of Mon12 you must
simply remove the MON-SEL jumper and run the NoICE software. See the help
documentation in this program for more information.

8
Programming Flash EEPROM
After debugging, you can program your application into Flash Memory so it executes
automatically when you apply power to the board as follows:
1. Make a backup copy of HELLO.ASM then use a text editor to modify it. Remove the
comment ;character before the following line to initialize the stack pointer which is
necessary when running outside of a debugger:
LDS #$7FE ; initialize the stack pointer
2. Remove the comment ;character from before the following 2 lines at the end, to set the
reset vector to go to the beginning of the program (the label START) when powered on:
org $fffe reset vector
fdb START
3. Re-Assemble HELLO.ASM as described in the "Assembling Source Code" section.
4. Select Program from the AxIDE menu and follow the message prompts. When prompted
for a file name, enter the new HELLO.S19 file.
5. Set the CONFIG SWITCH positions 1-5 all ON. The red VPP light should come on.
6. Press the RESET button on the board before clicking OK. When prompted to Erase,
choose Yes.
7. When finished programming, REMOVE POWER then set the CONFIG SWITCH positions
1-5 all OFF. The VPP light should turn off.
8. Re-Apply Power to the board. Your new program should start automatically and the “Hello
World” prompt should be displayed in the terminal window.
To return to the Mon12 monitor program, set the CONFIG SWITCH positions 1-4 all back ON
then press RESET.

9
MEMORY MAP
Following is the memory map for this development board. Consult the 68HC912D60 technical
reference manual on the CD for internal memory map details for this processor.
FFFF
C000
CONFIG 1 2 3 4
ON ON ON ON
External EPROM
U6/7 (Mon12)
BFFF
1000
External RAM
U4/5
CONFIG 1 2 3 4
ON ON ON OFF
External RAM
U4/5
CONFIG 1 2 3 4
OFF OFF OFF OFF
Internal Flash Memory
On-Chip
FFF
C00 HC12 Internal EEPROM On-Chip
Peripheral Area - see note 2 below
BFF
A00
Unused = A00-B7F
LCD / CS7 = BF0-BFF
CS6 = BE0-BEF
CS5 = BD0-BDF
CS4 = BC0-BCF
CS3 = BB0-BBF
CS2 = BA0-BAF
CS1 = B90-B9F
CS0 = B80-B8F
9FF
800 Internal Registers - see note 1 below
See 68HC912D60 Technical Reference Manual
7FF
000 Internal RAM On-Chip
1. The Internal Register base address is relocated from $000 to $800 on startup by the
debug utilities (Mon12 and NoICE). To preserve this memory map, you must also do this
in your software when booting from flash. To do this, load register $11 with $08 for
example: MOVB #08,$11 ; post-reset location of INITRG
2. The Peripheral Area (A00-BFF) is set to Narrow (8-bit) data width by the debug utilities. If
using this memory, you must also do this in your software when booting from flash as
follows: MOVW #$0CF0,PEAR
MOVB #$73,MISC ; Flash on, p-sel stretch = 3

10
CONFIG SWITCH
The CME-12D60 board is shipped from the manufacturer with the following default CONFIG
SWITCH settings:
1234 567 8
ON ON ON ON OFF ON OFF OFF
The 8 position CONFIG SWITCH provides an easy method of configuring the CME-12D60
board operation. Following are the configuration switch descriptions and HC12 I/O port
usage:
CONFIG
SWITCH OPERATION when in ON position I/O PORT USED
1MODE A selection (see Mode chart below) MODA / PE5
2MODE B selection (see Mode chart below) MODB / PE6
3EXT – External Memory enable (1) PORT A, B, Ext. Bus
4MON – Monitor Memory enable (2) N/A
5VPP - Flash VPP voltage enable N/A
6RXD0 – COM1 Serial Port RXD0 input enable PS0 / RXD0
7RXD1 – COM2 Serial Port RXD1 input enable PS3 / RXD1
8CAN Port RX enable PCAN0
(1) Enables memory bus operation for access to board memory. Expanded bus must be
on for proper operation.
(2) Enables monitor EPROM’s in memory map at 0xC000 – FFFF hex if CONFIG
SWITCH position 3 is also on. When in off position memory space is SRAM for BDM
use.
MODE CHART
Single Chip Mode MOD A and B = OFF Boot from Internal Flash
Expanded Wide Mode MOD A and B = ON Boot from External Memory
NOTE: Expanded Narrow Mode is not available on this board.