Motorola MPC564EVB Manuel d'utilisateur télécharger pdf (Page 8)

MPC562BC 10/31/02

Tutorial

The following brief tutorial will help you become familiar with software development on this board quickly.

Using the Debug Monitor

This board ships with a dBUG monitor installed in the flash memory. See the dBUG Monitor manual provided on the support CD

for complete commands and instructions, see the reference document list for the CD loactation.

Applying the monitor program and any serial communications terminal program, it is possible to display and modify memory and

registers on the board from any host PC. Debug operations are also supported such as loading object code and symbols, stepping or

tracing code operation, and setting breakpoints to halt execution at a certain point. These are performed by typing commands into the

terminal program on the PC. Type help at the dBUG command prompt and hit <enter> for a complete list of available commands.

Experiment with some of the commands like reading (MD) and modifying (MM) memory. Make sure that memory space being

manipulated is mapped to valid addresses or the monitor program will perform an exception process. When applying the monitor be

aware that it also requires resources for operation such as memory and the serial port. Review the Memory map section to identify

User space and Monitor memory space. Note that User SRAM memory is provided from 0x3FA000 to 0x3FFFFF. The monitor

program applies SRAM from 0x3F9800 - 0x3F9FFF for its own use. If the monitor ram memory region is modified while the

monitor is operating, it may require a RESET sequence. The monitor will also apply the external flash memory for user code space

from 0xFF00 0000 to 0xFFEF FFFF and monitor space from 0xFFF0 0000 to 0xFFFF FFFF.

EXAMPLE:

A simple "hello world" program example is provided on the CD in the \Examples\MPC562BC directory. Follow these steps to load

and execute the example from internal RAM using the dBUG monitor program:

1. At the monitor prompt dBUG> type DL and hit <enter>.

2. Select the AXIDE Upload button (or send text file command from your terminal program) and locate the file named

"HELLO_R.S19" included on the support CD in the \Examples\MPC562BC directory. Send this file to the board.

3. When finished uploading, type go 3FA004 at the command prompt. You should see the phrase "Hello World!" echoed

back to the screen, which is all that this simple test program does, each time you hit a key.

4. To exit from this test program, hit a RESET button on the board.

This example program was compiled with the Diab Data compiler. The source files and scripts used are included on the support CD

as follows:

HELLO.C

Main source code file

SERIAL.C

Serial port I/O and ASCII text conversion routines

HELLO_R.DLD

Diab Linker script - specifies the programs memory organization

HELLO_R.BAT

DOS batch file used to build the program

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Motorola MPC564EVB Manuel d'utilisateur Page 8