Download - M2M webinar - Developing M2M applications with Lua

Developing M2M apps with Lua

De!e"op#n$ M2M apps w#%h Lua Benjamin Cabé – Sierra Wireless


� Wha% #s M2M?

Technology that supports wired or wireless communication between devices


Communication Infrastructure

Smart Pill Box

Heartbeat Sensor

Weight Scale

Blood Pressure

Medical Services Gateway

Near field

Blood Sugar

In%e&ne% o' Th#n$s

Patient

Clinical Trial

Doctor


Wha% #s Lua? •  A programming language

•  High Level

•  Scripting

•  Extensible

•  Simple

•  Efficient

•  Portable


Wha% #% #s no% •  An acronym

•  A replacement for C (C++)

•  A that recent language (1993)

•  Used only for games – Cisco, Adobe, Oracle, … –  See: http://en.wikipedia.org/wiki/Lua_(programming_language)#Other


Ex%ens#b"e •  Small

– Trivial syntax and reduced keyword set

•  Simple but not stupid –  Simple enough for new user, powerful enough for

advanced users (first-class functions, garbage collection, closures, tail calls, coercion, coroutines)

•  Lua core is tiny – Compiled size is ~150kB

–  Lua uses libraries for its extensions


Po&%ab"e •  The exact same code runs on different targets

•  Lua VM is written in pure C ANSI


H#$h-"e!e" 'ea%u&e se% •  Easy-to-use high level structures: strings, lists,

tables, sets, hash-tables

•  Automatic memory management with garbage collector

•  Proper error/exceptions management


H#$h-"e!e" 'ea%u&e se% ((on%’d) •  Easy user interaction and advanced tools

–  console

–  package manager, profilers, unit tests, …

•  Shorter development cycles – write, load without rebooting, look at what

happens interactively, reload etc.

•  Controlled execution model – Prevent pointer arithmetic and memory

management issues

– Graceful handling of incorrect arguments


Lua !s. o%he& h#$h-"e!e" "an$ua$es •  Same core features as Python, Ruby, Javascript

•  Better concurrency management – Built-in – doesn’t rely on OS

•  Cutting-edge execution technology & performances

•  Restricted set of libraries –  Stay simple, the developer brings his own

•  Outstanding Lua/C integration – Performance

–  Legacy


Lua 'o& embedded and M2M •  High-level languages usually trade hardware

resources for development & maintenance resources

•  Transition fully embraced on PC and servers, not yet on embedded devices, largely due to a history of resource scarcity

Lua allows to reconcile high-level languages accomplishments with embedded constraints


Lua app"#(a%#on '&amewo&) 'o& M2M •  User application container, embedded runtime

•  Set of libraries providing building blocks to develop user M2M applications: –  Serial and I/O management,

– Networking (FTP, HTTP, E-mail clients),

– GPS,

– Cryptography,

– Modbus,

–  Local storage,

– M2M server communication…

http://www.eclipse.org/mihini


IDE 'o& Lua de!e"opmen% •  Project structure

•  Syntax coloring

•  Content assist

•  Code navigation

•  Code formatting

•  Documentation

•  Code templates

•  Debugger

•  Remote development

June 2012: first release (0.8)

Dec. 2012: 0.9 release

June 2013: graduate w/ Kepler

20,000+ installations already!


IDE 'o& M2M de!e"opmen% •  We started working on Mihini support in

Koneki – Mihini execution environment for code assist

– Target Management for controlling the Application Container, accessing the logs, …

– Creation of software packages


Lua 'o& end-use& app"#(a%#ons? •  Many mobile development frameworks*

– Corona SDK**

– Gideros Mobile

–  LÖVE2D

–  etc.

* guess what? You can use Koneki LDT to develop for these frameworks!

** see http://youtu.be/XOlopalLKeU (« EclipseCon CoronaSDK »)


Mo&e #n'o&ma%#on •  M2M Portal

http://m2m.eclipse.org

•  Koneki http://www.eclipse.org/koneki

•  Mihini http://www.eclipse.org/mihini

Than) You!

Download - M2M webinar - Developing M2M applications with Lua

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