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14 RabbitCore RCM3200
• SWITCHCHAR.C—This program demonstrates transmitting and then receiving an
ASCII string on Serial Ports B and C. It also displays the serial data received from both
ports in the
STDIO window.
To set up the Prototyping Board, you will need to tie TxB and RxC
together on the RS-232 header at J5, and you will also tie RxB and
TxC together using the jumpers supplied in the Development Kit as
shown in the diagram.
Once you have compiled and run this program, press and release S2
and S3 on the Prototyping Board. The data sent between the serial ports will be dis-
played in the STDIO window.
Two sample programs,
SIMPLE485MASTER.C and
SIMPLE485SLAVE.C, are available to
illustrate RS-485 master/slave com-
munication. To run these sample pro-
grams, you will need a second Rabbit-
based system with RS-485, and you
will also have to add an RS-485 trans-
ceiver such as the SP483E and bias
resistors to the RCM30/31/32XX
Prototyping Board.
The diagram shows the connections. You will have to connect PC0 and PC1 (Serial Port D)
on the RCM30/31/32XX Prototyping Board to the RS-485 transceiver, and you will con-
nect PD4 to the RS-485 transceiver to enable or disable the RS-485 transmitter.
The RS-485 connections between the slave and master devices are as follows.
• RS485+ to RS485+
• RS485– to RS485–
• GND to GND
• SIMPLE485MASTER.C—This program demonstrates a simple RS-485 transmission of
lower case letters to a slave RCM3200. The slave will send back converted upper case
letters back to the master RCM3200 and display them in the STDIO window. Use
SIMPLE485SLAVE.C to program the slave RCM3200.
• SIMPLE485SLAVE.C—This program demonstrates a simple RS-485 transmission of
lower case letters to a master RCM3200. The slave will send back converted upper case
letters back to the master RCM3200 and display them in the STDIO window. Use
SIMPLE485MASTER.C to program the master RCM3200.
3.2.2 Other Sample Programs
Section 6.5 describes the TCP/IP sample programs, and Appendix C.8 provides sample
programs for the optional LCD/keypad module that can be installed on the Prototyping
Board.
J5
RxC TxC
GND
TxB RxB
681 W
220 W
681 W
485+
485
A
B
termi-
nation
bias
bias
Vcc
PC0
PC1
PD4
GND
DI
RO
DE
/RE
Vcc
RS-485
CHIP
- RabbitCore RCM3200 1
- Rabbit Semiconductor Inc 2
- Trademarks 2
- TABLE OF CONTENTS 3
- Appendix D. Power Supply 103 5
- Notice to Users 115 5
- Index 117 5
- Schematics 121 5
- 1. INTRODUCTION 7
- Table 1. RCM3200 Features 8
- User’s Manual 3 9
- 1.4 How to Use This Manual 10
- 2. HARDWARE SETUP 11
- Do not press down 12
- PC COM port 13
- 8 RabbitCore RCM3200 14
- 2.3 Run a Sample Program 15
- 2.4 Where Do I Go From Here? 16
- 3. RUNNING SAMPLE PROGRAMS 17
- 3.2 Sample Programs 18
- User’s Manual 13 19
- 14 RabbitCore RCM3200 20
- 4. HARDWARE REFERENCE 21
- Headers J1 and J2 are 22
- Backup Battery 23
- 18 RabbitCore RCM3200 24
- User’s Manual 19 25
- 20 RabbitCore RCM3200 26
- User’s Manual 21 27
- 4.2 Serial Communication 28
- DIAG connector on 29
- LNK), one to 29
- ACT), and one to indicate 29
- 4.3 Serial Programming Cable 30
- 26 RabbitCore RCM3200 32
- 4.4 Other Hardware 33
- 4.5 Memory 34
- 5. SOFTWARE REFERENCE 35
- 30 RabbitCore RCM3200 36
- 5.2 Dynamic C Function Calls 37
- RS232.LIB 38
- PACKET.LIB 38
- User’s Manual 33 39
- RETURN VALUE 39
- 5.3 Upgrading Dynamic C 40
- 6. USING THE TCP/IP FEATURES 41
- 36 RabbitCore RCM3200 42
- User’s Manual 37 43
- 38 RabbitCore RCM3200 44
- User’s Manual 39 45
- 40 RabbitCore RCM3200 46
- User’s Manual 41 47
- 42 RabbitCore RCM3200 48
- User’s Manual 43 49
- User’s Manual 45 51
- 46 RabbitCore RCM3200 52
- 6.7 Where Do I Go From Here? 53
- 48 RabbitCore RCM3200 54
- User’s Manual 49 55
- Please refer to the RCM3200 56
- Exclusion 57
- 52 RabbitCore RCM3200 58
- User’s Manual 53 59
- A.2 Bus Loading 60
- I/O read and write cycles 61
- 56 RabbitCore RCM3200 62
- = –55°C to +125°C, V 63
- = 3.0 V to 3.6 V 63
- 58 RabbitCore RCM3200 64
- A.5 Conformal Coating 65
- A.6 Jumper Configurations 66
- PPENDIX B. PROTOTYPING BOARD 67
- B.1 Introduction 68
- User’s Manual 63 69
- 64 RabbitCore RCM3200 70
- User’s Manual 65 71
- B.3 Power Supply 72
- User’s Manual 67 73
- MEASUREMENT 74
- Connector Pinout 75
- Prototyping Board 76
- User’s Manual 71 77
- 72 RabbitCore RCM3200 78
- PPENDIX C. LCD/KEYPAD MODULE 79
- 74 RabbitCore RCM3200 80
- Contrast 81
- Adjustment 81
- C.3 Keypad Labeling 82
- C.4 Header Pinouts 83
- 78 RabbitCore RCM3200 84
- User’s Manual 79 85
- Bezel/Gasket 86
- User’s Manual 81 87
- C.7.3 LCD Display 89
- STDIO string functions 95
- C.7.4 Keypad 104
- library 104
- C.8 Sample Programs 107
- 102 RabbitCore RCM3200 108
- APPENDIX D. POWER SUPPLY 109
- 165 mA·h 110
- D.2 Optional +5 V Output 110
- E.1 Overview 111
- E.2 Header J6 112
- E.3 Using Parallel Port F 113
- 108 RabbitCore RCM3200 114
- Bits Value Description 115
- Table E-3. PWM Outputs 116
- E.5 PWM Registers 117
- E.6 Quadrature Decoder 118
- Rejected 118
- Accepted 118
- Peri Clock 118
- Timer A10 118
- User’s Manual 113 119
- 114 RabbitCore RCM3200 120
- NOTICE TO USERS 121
- 116 RabbitCore RCM3200 122
- User’s Manual 117 123
- 118 RabbitCore RCM3200 124
- User’s Manual 119 125
- 120 RabbitCore RCM3200 126
- SCHEMATICS 127
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