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简单传感器应用套件

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RCM4300 Development Kit
Up to 1GB in flash memory
DS2406 SPST addressable switch, DS18B20 temperature sensor, DS2450 A/D converter, DS2480B line driver
1-Wire based application samples
Web Server capability


The Simple Sensor Application Kit provides sample applications based on 1-Wire devices to help users better understand and implement the 1-Wire communications bus using a prototyping board and a RabbitCore® module.

1-Wire provides a combination of memory, mixed signal and secure authentication functions via a single contact serial interface that delivers both power and communication on a single line (plus ground as a reference). 1-Wire offers a simple, low-cost solution for adding multiple system functions with a minimum number of interconnections. Sensors can send the data via 1-Wire to a microprocessor-based Rabbit module to initiate control functions, such as turning on heaters, air conditioners, fans or any other action.

 

The Simple Sensor Application Kit provides an ideal design reference to interface a Rabbit-based system to a Maxim-Dallas 1-Wire® bus. The kit provides sample applications based on four 1-Wire devices to help users better understand and implement a 1-Wire bus using a Prototyping Board and a RabbitCore® RCM4300 module. The Simple Sensor Kit is the ideal reference on how to interface any 1-Wire device to any Rabbit module or processor. The 1-Wire interface is still widely used and is best suited where ZigBee networks are not reliable due to environmental constraints or if the distance between two points is very short.

Application Kit Contents

The Simple Sensor Application Kit includes:

RabbitCore RCM4300 Development Kit with socket for up to 1GB flash memory, used for data storage 
Simple Sensor Prototype Board with 1-Wire devices 
DS2406 SPST addressable switch 
DS18B20 temperature sensor 
DS2450 A/D converter 
DS2480B line driver 
Dynamic C® 10 CD with sample programs and libraries 
RabbitWeb - Easily create web forms 
Simple Sensor Application Kit Getting Started Guide 
Universal Power Supply 
Sample Program Descriptions

Sample Program Function 
1-WIRE.C These sample programs check for and access all the included 1-Wire devices in this kit, except the line driver. 
DS18B20.C 
DS18S20.C 
DS2406.C 
DS2450.C 
OW_RWB.C This sample program illustrates how to detect and manage 1-Wire devices via a Web interface using Dynamic RabbitWeb scripting and Yahoo! User Interface (YUI) libraries. 
OW_RWB_LOG.C This sample program is similar to OW_RWB.C, but also uses the miniSD Card on the RCM4300, and will create a 1-Wire folder on the miniSD Card with subfolders for each of the supported 1-Wire device types.


Features and Benefits
1-Wire based application samples 
Web Server capability 
Sample program on how to detect and manage 1-Wire via a Web Interface 
Easy-to-use integrated design environment 
Applications
Weather Monitoring 
Thermostat Control 
Building Automation 
Display sensor readings using RabbitWeb
Using the Dynamic C integrated development environment and RabbitWeb, you can create HTML forms for web pages that interface with C variables in embedded networked applications. The capability can reduce weeks or months of complex Common Gate Interface (CGI) programming down to hours and eliminate all of the C programming involved in parsing HTML form input and generating HTML pages based on program variables.

RabbitWeb is included in Dynamic C and is extremely useful for anyone planning or considering a web browser interface to monitor, control or configure their networked embedded application.

Interface Options
The Simple Sensor Application Kit provides for four different methods to interface the 1-Wire bus. 
Direct interface ? this interface connects one or two 1-Wire devices on the 1-Wire bus directly to the Rabbit microprocessor serial port. The interface uses one serial port at CMOS levels to drive the 1-Wire bus. 
Discrete interface ? this interface connects the 1-Wire bus to a high-current discrete driver circuit via transistors Q1 and Q2 that is controlled by the Rabbit microprocessor serial port. The discrete interface uses two serial port lines at CMOS levels to interface the transistor driver to the 1-Wire bus. Several 1-Wire devices may be located considerably farther away from the Rabbit microprocessor than in the previous option. 
Bit-bang direct interface ? this interface connects the 1-Wire bus directly to a Rabbit microprocessor I/O port. 
DS2480 line driver interface ? the DS2480 line driver interface connects the 1-Wire bus to an integrated component driver that is controlled by the Rabbit microprocessor serial port. 
The kit provides seven application-level sample programs that demonstrate how to write applications that call and use the device function calls at the library level. These sample programs demonstrate common event loop processing for device I/O functions, and may be used as a basis to develop your own applications.

1-Wire Component Descriptions

DS2406 
The DS2406 Dual Addressab



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