Digi BL1800 3. S

User’s Manual 15

3. SUBSYSTEMS

Chapter 3 describes the principal subsystems and their use for

the Jackrabbit.

•Digital Inputs/Outputs

•A/D Converter

•D/A Converters

•Serial Communication

•Memory

Figure 3 shows these Rabbit-based subsystems designed into the Jackrabbit.

Figure 3. Jackrabbit SubsystemsSRAMFlash

15 MHz

osc

32 kHz

osc

BL1800

RABBIT ®

2000

RS-232

RS-485

Digital

Outputs

High-

Power

Outputs

Programming

Port

Digital

Inputs

A/D

Converter

Analog

Outputs

Contents

Main Jackrabbit (BL1800) Users Manual TABLE OF CONTENTS Chapter 1. Introduction 1 Chapter 2. Getting Started 7 Chapter 3. Subsystems 15 Chapter 4. Software Reference 37 Appendix A. Specifications 57 Appendix B. Prototyping Board 69 Appendix C. Power Management 79 Index 87 Schematics 89 1. I 1.2 Development and Evaluation Tools 1.3 How to Use This Manual 1.4 CE Compliance Page Page 2. GETTING STARTED 2.1 Development Kit Contents Page Users Manual 9 J5 J6 Z-World, Inc. Prototyping Board Jackrabbit Board J2 J6 10 Jackrabbit (BL1800) DIAG Connect the other end of the programming cable to a COM port on your PC. JACKRABBIT BOARD U4 VINGNDGND RESET J5 Page 2.3 Installing Dynamic C 2.4 Run a Sample Program 2.5 Where Do I Go From Here? 3. S Chapter 3 describes the principal subsystems and their use for the Jackrabbit. Figure 3. Jackrabbit Subsystems SRAM Flash BL1800 3.1 Jackrabbit Pinouts Legend Figure 4. Pinout for Jackrabbit Headers J4 and J5 J5 J4 3.2 Digital Inputs/Outputs HV0HV2 SINKING OUTPUTS HV3 SOURCING OUTPUT Page 20 Jackrabbit (BL1800) Figure 8. Changing HV3 to a Sinking Output J5 J4 Battery R55 R56 D21 3.3 A/D Converter Page 3.4 D/A Converters 2.5 V 1 e 17.4 mV= 2.5 V 1 e Page Page Page 3.5 Serial Communication Ground recommended Users Manual 29 Figure 11. Multidrop Jackrabbit Netw ork 30 Jackrabbit (BL1800) RS-485 Alternate Uses of the Serial Programming Port R18 681 W R17 220 W R16 681 W 485+ 485 bias bias U4 Page 32 Jackrabbit (BL1800) 3.6 Programming Cable DIAG SRAM Rabbit 2000 Y3 3.7 Memory RS-485 SRAM Y3 J4 3.8 Other Hardware Page Page 4. SOFTWARE REFERENCE Page 4.2 Sample Programs Page Page Page Page Page Page Page Page 4.3 Cooperative Multitasking Page Page 4.4 Jackrabbit Function Calls void digOut(int channel, int value); void digOn(int channel); void digOff(int channel); void anaOut(int channel, int value); void anaIn(int channel, int *value); void cof_anaIn(int channel, int *value); void Jr485Init(); void Jr485Tx(); void Jr485Rx(); 4.5 Upgrading Dynamic C Page 58 Jackrabbit (BL1800) A.1 Electrical and Mechanical Specifications J4 J5 Figure A-1 shows the mechanical dimensions for the Jackrabbit. Figure A-1. Jackrabbit Dimensions 60 Jackrabbit (BL1800) Figure A-2. Jackrabbit Exclusion Zones Exclusion Zones J4 J5 Page A.2 Jumper Configurations Figure A-4 shows the header and jumper locations used to configure the various Jackrabbit options. Bottom Side Figure A-4. Location of Jackrabbit Configurable Positions Top Side Page A.3 Conformal Coating Conformally coated area A.4 Use of Rabbit 2000 Parallel Ports J Figure A-6. Jackrabbit Subsystems Table A-3. Jackrabbit Pinout Configurations Table A-3. Jackrabbit Pinout Configurations (continued) Page Page 70 Jackrabbit (BL1800) B.1 Prototyping Board Overview Z-World, Inc. PWR RESET 1 Page 72 Jackrabbit (BL1800) B.2 Mechanical Dimensions and Layout (80) (102) 6 J3 B.3 Using the Prototyping Board Z-World, Inc. JP2 PWR RESET Bottom Side J3 J7 [0.156" (4 mm) spacing] Relay } 76 Jackrabbit (BL1800) RT1 R1 JP2 + Top Side Buzzer J2 R3 Page Page APPENDIX C. POWER MANAGEMENT C.1 Power Supplies Page Page Page Page Page C.3 Chip Select Circuit Page I A B C D R S T U S