\input{subfilepreamble}
+\setcounter{chapter}{2}
+
\begin{document}
\input{subfileprefix}
\chapter{\texorpdfstring{\Glsxtrlong{TOP} for the \glsxtrlong{IOT}}{Task-oriented programming for the internet of things}}%
\end{itemize}
\end{chapterabstract}
-The edge layer of \gls{IOT} systems predominantly contains of microcontrollers.
+The edge layer of \gls{IOT} systems predominantly consists of microcontrollers.
Microcontrollers are tiny computers designed specifically for embedded applications.
-They therefore only have a soup\c{c}on of memory, have a slow processor, come with many energy efficient sleep modes and have a lot of peripheral support such as \gls{GPIO} pins.
+They therefore only have a soup\c{c}on of memory and have a slow processor.
+However, they also come with energy efficient sleep modes and have a lot of peripheral support such as \gls{GPIO} pins.
Usually, programming microcontrollers requires an elaborate multi-step toolchain of compilation, linkage, binary image creation, and burning this image onto the flash memory of the microcontroller in order to compile and run a program.
The programs are usually cyclic executives instead of tasks running in an operating system, i.e.\ there is only a single task that continuously runs on the bare metal.
\Cref{tbl:mcu_laptop} compares the hardware properties of a typical laptop with two very popular microcontrollers.
\end{table}
Different models of microcontrollers require their own vendor-provided drivers, hardware abstraction layer, compilers and \glspl{RTS}.
-There are many platforms that abstract away from this such as \gls{MBED} and \gls{ARDUINO} of which \gls{ARDUINO} is specifically designed for education and prototyping and hence used here.
+There are many platforms that abstract away from this such as \gls{MBED} and \gls{ARDUINO}.
+\Gls{ARDUINO} is specifically designed for education and prototyping and hence used here to show traditional microcontroller programming.
+
The popular \gls{ARDUINO} \ccpp{} dialect and accompanying libraries provide an abstraction layer for common microcontroller behaviour allowing the programmer to program multiple types of microcontrollers using a single language.
Originally it was designed for the in-house developed open-source hardware with the same name but the setup allows porting to many architectures.
It provides an \gls{IDE} and toolchain automation to perform all steps of the toolchain with a single command.
-\subsection{\texorpdfstring{\Glsxtrshort{TOP} for the \glsxtrshort{IOT}}{TOP for the IoT}}
+\section{\texorpdfstring{\Glsxtrshort{TOP} for the \glsxtrshort{IOT}}{TOP for the IoT}}
\Gls{TOP} is a programming paradigm that allows multi-tier systems to be generated from a single declarative source.
\Gls{ITASK} is a general-purpose \gls{TOP} system for programming distributed web applications.
These distributed web applications often form the core of \gls{IOT} applications as well but integrating these devices in \gls{ITASK} is not straightforward.
\Gls{ITASK} targets relatively fast but energy-hungry systems with large amounts of \gls{RAM} and a speedy connections.
-Edge devices in \gls{IOT} systems are typically slow but energy efficient and do not have the memory to run the naturally heap-heavy functional programs that \gls{ITASK} results in.
-\Gls{MTASK} bridges this gap by providing a \gls{TOP} \gls{DSL} for \gls{IOT} edge devices that can, because domain-specific knowledge is built in, run on hardware with much less memory and processor speed.
+Edge devices in \gls{IOT} systems are typically slow but energy efficient and do not have the memory to run the naturally heap-heavy functional programs that \gls{ITASK} programs are.
+\Gls{MTASK} bridges this gap by providing a \gls{TOP} \gls{DSL} for \gls{IOT} edge devices that can, because domain-specific knowledge is embedded in the language and execution platform, run on hardware with much less memory and processor speed.
The following sections compare traditional microcontroller programming with programming the devices using \gls{MTASK}.
\section{Hello world!}
repositories / phd-thesis.git / blobdiff