WSN Programming Course
TinyOS Lab: Basic Programming
Manuel Fernández
UAH, 18th September 2013
• Introduction to nesC • Components • File Types • Basic program: NullC • How to compile • NesC variables • Eclipse IDE • Exercises
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Contents
• A nesC application consists of one or more components assembled, or wired, to form an application executable. • Components define two scopes:
• one for their specification which contains the names of their interfaces, and • a second scope for their implementation.
COMPONENT A SPECIFICATION
IMPLEMENTATION
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NesC (I)
• A component provides and uses interfaces. • The provided interfaces are intended to represent the functionality that the component provides to its user in its specification. • The used interfaces represent the functionality the component needs to perform its job in its implementation.
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NesC (II)
• Interfaces are bidirectional: they specify a set of commands, which are functions to be implemented by the interface's provider, and a set of events, which are functions to be implemented by the interface's user. For a component to call the commands in an interface, it must implement the events of that interface. • The set of interfaces which a component provides together with the set of interfaces that a component uses is considered that component's signature.
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NesC (III)
• There are 2 types of components in nesC:
- Modules: provide the implementations of one or more interfaces.
- Configurations: used to assemble other components together, connecting interfaces used by components to interfaces provided by others.
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Components
• Naming conventions are as follows:
CONFIGURATION
MODULE
COMPONENTS
INTERFACE
Makefile Only in main app
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File Types
CONFIGURATION
MODULE
TinyOS Lab: Lesson 01 – Basic Programming
© 2012 Manuel Fernández
Makefile NullAppC.nc NullC.nc
Configuration Module
Makefile:
COMPONENT=NullAppC
include $(MAKERULES)
Name of configuration file
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Basic program: NullC
NullApp.nc :
SPECIFICATION
IMPLEMENTATION
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Basic program: NullC
SPECIFICATION
IMPLEMENTATION
NullC.nc :
• Open terminal in the folder • Type:
make telosb
• Insert mote in USB port and type:
make telosb reinstall.1 bsl,/dev/ttyUSB0
Platform
MoteID USB port (type motelist to find which one it is
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How to compile
• Open terminal in the folder
• Type:
make telosb docs
• Check the created folders
Platform
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Fun Stuff
• Commonly used units:
• int is NOT used • bool is also used
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NesC variables
• An alternative to console programming is using a TinyOS plug-in for the Eclipse IDE. • In this IDE it is possible to compile and install programs in motes • We will use this IDE to speed up the lessons.
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Eclipse IDE
1. Interface Leds has commands to control the 3 leds on the mote. (led0, led1, led2). Try each of them and install them on the mote
2. Add a Timer to blink the Leds periodically, showing a binary timer using the 3 leds.
3. Configure the User Button to do a complete routine with the Leds
4. Pack the previous subroutine in a new component with your own interface.
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Exercises
