Motorola CME-12D60 Manuale utente

2000 2813 Industrial Ln. •Garland, TX 75041 •(972) 926-9303 FAX (972) 926-6063

email: [email protected] •web: http://www.axman.com

xiom

anufacturing

CME-12D60

Development Board for Motorola

68HC912D60 Microcontroller

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

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.

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.

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.

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.

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.

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.

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

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.

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