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5.6 Specifications....................................................................................................................................116
5.6.1 Electrical and Mechanical Specifications .................................................................................116
5.6.2 Physical Mounting ....................................................................................................................118
Chapter 6. Keypad/Display Interface
119
6.1 Features .............................................................................................................................................120
6.1.1 Software ....................................................................................................................................120
6.2 Connections ......................................................................................................................................121
6.2.1 Power Supply ............................................................................................................................122
6.3 Key RabbitNet Keypad/Display Interface Components ...................................................................123
6.3.1 Headers and Jacks .....................................................................................................................123
6.3.1.1 Keypads............................................................................................................................ 123
6.3.1.2 Liquid Crystal Displays.................................................................................................... 124
6.3.2 LEDs .........................................................................................................................................124
6.3.3 Buzzer .......................................................................................................................................124
6.4 Liquid Crystal Display Backlights....................................................................................................125
6.5 Display Contrast ...............................................................................................................................127
6.6 Software ............................................................................................................................................128
6.6.1 Dynamic C Libraries.................................................................................................................128
6.6.2 Sample Programs ......................................................................................................................128
6.6.3 RabbitNet Keypad/Display interface Function Calls................................................................130
6.6.3.1 Buzzer............................................................................................................................... 130
6.6.3.2 LEDs................................................................................................................................. 131
6.6.3.3 Keypad ............................................................................................................................. 132
6.6.3.4 Display ............................................................................................................................. 135
6.6.4 Status Byte ................................................................................................................................141
6.7 Specifications....................................................................................................................................142
6.8 Electrical and Mechanical Specifications .........................................................................................142
6.8.1 Physical Mounting ....................................................................................................................144
Appendix A. Keypad/Display Interface Expansion Kit
145
A.1 Keypads............................................................................................................................................146
A.1.1 Keypad Templates....................................................................................................................147
A.2 LCD Displays...................................................................................................................................150
A.2.1 2 × 20 Character LCD ..............................................................................................................151
A.2.2 4 × 20 Character LCD ..............................................................................................................151
A.3 ZMENU.C........................................................................................................................................152
A.4 Configuring Key Code Indexes and Physical Keypad Arrangement...............................................156
A.4.1 Basics of Assigning Key Code Indexes ...................................................................................156
A.4.2 Expansion Kit Keypads............................................................................................................158
A.4.2.1 3 × 4 Keypad ................................................................................................................... 158
A.4.2.2 2 × 6 Keypad ................................................................................................................... 159
A.4.2.3 4 × 10 Keypad ................................................................................................................. 160
A.5 2 × 6 Keypad Datasheet ...................................................................................................................161
A.6 3 × 4 Keypad Datasheet ...................................................................................................................162
A.7 4 × 10 Keypad Datasheet .................................................................................................................163
A.8 2 × 20 Character LCD Datasheet .....................................................................................................164
A.9 4 × 20 Character LCD Datasheet .....................................................................................................188
Index
195
Schematics
199
User ’s Manual
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