Motorola ColdFire MCF5282 User Manual Page 44
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3-2 M5282EVB User’s Manual
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Operational Procedure
Most commands can be recognized by using an abbreviated name. For instance, entering “h” is the
same as entering “help”. Thus, it is not necessary to type the entire command name.
The commands DI, GO, MD, STEP and TRACE are used repeatedly when debugging. dBUG
recognizes this and allows for repeated execution of these commands with minimal typing. After
a command is entered, simply press <RETURN> or <ENTER> to invoke the command again. The
command is executed as if no command line parameters were provided.
An additional function called the "System Call" allows the user program to utilize various routines
within dBUG. The System Call is discussed at the end of this chapter.
The operational mode of dBUG is demonstrated in Figure 3-1. After the system initialization, the
board waits for a command-line input from the user terminal. When a proper command is entered,
the operation continues in one of the two basic modes. If the command causes execution of the user
program, the dBUG firmware may or may not be re-entered, at the discretion of the user’s program.
For the alternate case, the command will be executed under control of the dBUG firmware, and
after command completion, the system returns to command entry mode.
During command execution, additional user input may be required depending on the command
function.
For commands that accept an optional <width> to modify the memory access size, the valid values
are:
• B 8-bit (byte) access
• W 16-bit (word) access
• L 32-bit (long) access
When no <width> option is provided, the default width is.W, 16-bit.
The core ColdFire® register set is maintained by dBUG. These are listed below:
•A0-A7
•D0-D7
•PC
•SR
All control registers on ColdFire® are not readable by the supervisor-programming model, and
thus not accessible via dBUG. User code may change these registers, but caution must be exercised
as changes may render dBUG inoperable.
A reference to “SP” (stack pointer) actually refers to general purpose address register seven, “A7.”
3.2 Operational Procedure
System power-up and initial operation are described in detail in Chapter 1. This information is
repeated here for convenience and to prevent possible damage.
3.2.1 System Power-up
• Be sure the power supply is connected properly prior to power-up.
• Make sure the terminal is connected to TERMINAL (P4) connector.
• Turn power on to the board.
- M5282EVB User's Manual 1
- Contents 5
- MOTOROLA Tables v 9
- ILLUSTRATIONS 11
- Chapter 1 13
- 1-2 M5282EVB User’s Manual 14
- 1.1 MCF5282 Microprocessor 15
- 1-4 M5282EVB User’s Manual 16
- MCF5282 Microprocessor 16
- Chapter 1. M5282EVB 1-5 17
- 1.2 System Memory 18
- 1.2.6 M5282EVB Memory Map 19
- 1.3 Support Logic 20
- Chapter 1. M5282EVB 1-9 21
- Support Logic 21
- 1.3.2 Clock Circuitry 22
- 1.3.3 Watchdog Timer 22
- 1.3.4 Exception Sources 23
- 1.3.5 TA Generation 23
- 1.4 Communication Ports 24
- 1.4.2 FlexCAN 2.0 B Port 25
- 1.4.3 10/100T Ethernet Port 26
- 1.4.4 BDM/JTAG Port 26
- 1.4.5 I 27
- 1.4.6 QSPI 28
- 1.5.1 Expansion Connectors 28
- Table 1-18. J6 29
- Table 1-19. J7 29
- Table 1-17. J5 29
- Table 1-20. J2 30
- 1.5.3 Reset Switch (S2) 31
- 1.5.4 User LEDs 32
- 1.5.5 Other LEDs 32
- 1.7 Software Development 33
- 1-22 M5282EVB User’s Manual 34
- Software Development 34
- 2.1 System Configuration 35
- 6 - 12 V 36
- Input Power 36
- RS-232 Terminal 36
- 2.2 Installation and Setup 37
- 2-4 M5282EVB User’s Manual 38
- Installation and Setup 38
- Figure 2-3. Jumper Locations 40
- 2.4 Using The BDM Port 41
- 2-8 M5282EVB User’s Manual 42
- Using The BDM Port 42
- Chapter 3 43
- 3.2 Operational Procedure 44
- 3.2.2 System Initialization 45
- 3.3 Command Line Usage 46
- 3.4 Commands 47
- 3-6 M5282EVB User’s Manual 48
- Commands 48
- ASM Assembler 49
- BC Block Compare 50
- BF Block Fill 51
- BM Block Move 52
- BR Breakpoints 53
- BS Block Search 54
- DC Data Conversion 55
- DI Disassemble 56
- DL Download Console 57
- DN Download Network 58
- GO Execute 59
- GT Execute To 60
- IRD Internal Register Display 61
- IRM Internal Register Modify 62
- HELP Help 63
- LR Loop Read 64
- LW Loop Write 65
- MD Memory Display 66
- MM Memory Modify 67
- MMAP Memory Map Display 68
- RD Register Display 69
- RM Register Modify 70
- SET Set Configurations 72
- SHOW Show Configurations 73
- STEP Step Over 74
- SYMBOL Symbol Name Management 75
- TRACE Trace Into 76
- UPDBUG Update dBUG 77
- UPUSER Update User Flash 78
- 3.5 TRAP #15 Functions 79
- 3.5.2 IN_CHAR 80
- 3.5.3 CHAR_PRESENT 80
- 3.5.4 EXIT_TO_dBUG 81
- 3-40 M5282EVB User’s Manual 82
- TRAP #15 Functions 82
- Appendix A 83
- Configuring dBUG for Network 83
- Downloads 83
- Appendix B 87
- Schematics 87
- Fire®Cold MCF5282 88
- Evaluation Board - M5282EVB 88
- CAN Bus Connector 89
- - 9 way D-type (Female) 89
- Cold Fire® 90
- SDRAM Upper 16-bit Word 99
- SDRAM Lower 16-bit Word 99
- RS232 Transceiver 100
- NOT POPULATED AT ASSEMBLY 100
- Appendix C 101
- Evaluation Board BOM 101
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