Digi JACKRABBIT BL1800 - Manual (Page 4)

Jackrabbit (BL1800)
Chapter 4. Software Reference 37
4.1 An Overview of Dynamic C............................................................................................................... 37
4.2 Sample Programs................................................................................................................................ 39
4.2.1 DEMOJR1.C .............................................................................................................................. 40
4.2.2 Other Sample Programs Illustrating Digital I/O......................................................................... 44
4.2.3 RS-232 Serial Communication Sample Programs ..................................................................... 46
4.2.4 RS-485 Serial Communication Sample Program ....................................................................... 47
4.3 Cooperative Multitasking ................................................................................................................... 48
4.3.1 Advantages of Cooperative Multitasking ................................................................................... 50
4.4 Jackrabbit Function Calls ................................................................................................................... 51
4.4.1 I/O Drivers.................................................................................................................................. 51
4.4.2 Serial Communication Drivers ................................................................................................... 55
4.5 Upgrading Dynamic C ....................................................................................................................... 56
4.5.1 Patches and Bug Fixes................................................................................................................ 56
4.5.2 Add-On Modules ........................................................................................................................ 56
Appendix A. Specifications 57
A.1 Electrical and Mechanical Specifications.......................................................................................... 58
A.1.1 Exclusion Zone .......................................................................................................................... 60
A.1.2 Headers ...................................................................................................................................... 61
A.2 Jumper Configurations ...................................................................................................................... 62
A.3 Conformal Coating ............................................................................................................................ 64
A.4 Use of Rabbit 2000 Parallel Ports ..................................................................................................... 65
Appendix B. Prototyping Board 69
B.1 Prototyping Board Overview............................................................................................................. 70
B.1.1 Prototyping Board Features ....................................................................................................... 71
B.2 Mechanical Dimensions and Layout ................................................................................................. 72
B.3 Using the Prototyping Board ............................................................................................................. 73
B.3.1 Demonstration Board ................................................................................................................. 74
B.3.2 Prototyping Board...................................................................................................................... 76
Appendix C. Power Management 79
C.1 Power Supplies .................................................................................................................................. 79
C.2 Batteries and External Battery Connections...................................................................................... 82
C.2.1 Battery Backup Circuit .............................................................................................................. 83
C.2.2 Power to VRAM Switch ............................................................................................................ 84
C.2.3 Reset Generator.......................................................................................................................... 84
C.3 Chip Select Circuit............................................................................................................................. 85
Index 87
Schematics 89