374 lines
10 KiB
TeX
374 lines
10 KiB
TeX
%===============================================================================
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% Zweck: KTR-Präsentation-Vorlage
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% Erstellt: 15.04.2013
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% Update: 04.07.2016
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% Autor: M.G.
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%===============================================================================
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\newcommand\ratio{169}
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\documentclass[10pt,aspectratio=\ratio,
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]{beamer}
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\begin{document}
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%===============================================================================
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% Zum Kompilieren latexmk ausführen.
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% Konfiguration in texmaker: Options -> Configure Texmaker -> Quick Build -> Select Latexmk + ViewPD
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% Zur Auswahl der Sprache im folgenden Befehl
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% ngerman für deutsch eintragen, english für Englisch.
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%===============================================================================
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\selectlanguage{ngerman}
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\ifnum\ratio<169
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\else
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\AtBeginSection[]
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{
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{
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\frametitle{Outline}
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\tableofcontents[currentsection,hideallsubsections]
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}
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%\AtBeginSubsection[]
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% {
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% \frametitle{Outline}
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% \tableofcontents[sectionstyle=show/hide,subsectionstyle=show/shaded/hide,subsubsectionstyle=hide]
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%}
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%
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%\AtBeginSubsubsection[]
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%{
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% \frame<handout:0>
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% {
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% \frametitle{Outline}
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% \tableofcontents[sectionstyle=show/hide,subsectionstyle=show/shaded/hide,subsubsectionstyle=show/shaded/hide]
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% }
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%}
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\newcommand<>{\highlighton}[1]{%
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\alt#2{\structure{#1}}{{#1}}
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}
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\newcommand{\icon}[1]{\pgfimage[height=1em]{#1}}
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\section*{}
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\phantomsection
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\begin{frame}{First things first}\framesubtitle{Hardwareausgabe}
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\begin{itemize}
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\item Verfügbare Sets: 20
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\item Reserviert: ~15
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\item Kosten: \EUR{8} pro Set
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\end{itemize}
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\end{frame}
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\begin{frame}{Content}
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\tableofcontents
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%% Content starts here %%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\section{ESP8266}
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\subsection{Hardware}
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\begin{frame}{ESP8266}
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\begin{itemize}
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\item 80 MHz, 64 kB RAM (Code), 96 kB RAM (Daten)
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\item 4 MB Flashspeicher
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\item Ardunio-kompatibel
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\item Open Source Hardware
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\item Billige China-Klone :)
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\end{itemize}
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\image{.6\textwidth}{esp8266}{ESP8266 + NodeMCU v3 \cite{esp8266}}{img:esp}
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\end{frame}
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\begin{frame}{ESP8266 - Pins}
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\image{.6\textwidth}{pinmap}{ESP8266 Pins \cite{pinmap}}{img:pins}
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\end{frame}
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\subsection{Software}
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\begin{frame}{ESP8266}
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\href{http://nodemcu.com/index_en.html}{NodeMCU}
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\begin{itemize}
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\item Open Source Firmware
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\item Lua-Skriptbare Umgebung
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\item Doku: \url{https://nodemcu.readthedocs.io/en/master/}
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\end{itemize}
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Cooler: \href{https://micropython.org/}{MicroPython}
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\begin{itemize}
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\item Basiert auf Python 3
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\item Frei \& Open Source
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\item Einige Funktionalität eingeschränkt (z.B. Multithreading)
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\item Verscheidene Boards/Controller unterstützt: PyBoard, ESP32, \dots
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\item Doku: \url{http://docs.micropython.org/en/latest/esp8266/index.html} (\url{http://iot.wiai/doc})
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\end{itemize}
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Lowlevel: C, Arduino Studio
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\end{frame}
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\section{Setup}
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\subsection{Tools}
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\begin{frame}{Tools}\framesubtitle{Alle Downloads unter \url{http://iot.wiai/}}
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Linux
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\begin{itemize}
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\item Debian, Gentoo (testing): \texttt{\{apt install,emerge\} esptool picocom}
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\item \texttt{adduser \$USER dialout}
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\item Alternative: Docker (bin/docker): \textit{docker-compose run esp esptool}
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\end{itemize}
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Windows
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\begin{itemize}
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\item \url{https://www.python.org}, z.B. 3.6.2
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\begin{itemize}
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\item Option \textit{Add Python to PATH} aktivieren
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\end{itemize}
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\item \texttt{pip install esptool}
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\item \url{https://www.chiark.greenend.org.uk/~sgtatham/putty/download.html}
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\item CH340G Treiber: \url{http://www.wch.cn/download/CH341SER\_ZIP.html}
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\end{itemize}
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Mac
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\begin{itemize}
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\item Irgendwie so ähnlich\dots
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\end{itemize}
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Offline pip: \textit{pip install -f http://iot.wiai/webrepl/}%TODO: --no-index?
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\end{frame}
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\subsection{Firmware}
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\begin{frame}{Firmware}\framesubtitle{Alle Downloads unter \url{http://iot.wiai/}}
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Windows-Spezial:
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\begin{itemize}
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\item Portbezeichner: Gerätemanager $\rightarrow$ Serielle Geräte (COM+LPT) $\rightarrow$ COM$X$
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\item python -m esptool
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\end{itemize}
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Flashen:
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\begin{itemize}
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\item \url{https://micropython.org/download\#esp8266} %TODO: WIAI-link
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\item \texttt{esptool.py --port /dev/ttyUSB0 erase\_flash}
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\item \texttt{esptool.py --port /dev/ttyUSB0 --baud 460800 write\_flash --flash\_size=detect 0 esp8266-20170823-v1.9.2.bin}
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\item reset
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\end{itemize}
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\end{frame}
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\subsection{REPL}
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\begin{frame}{Serielle Konsole}
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*nixe:
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\begin{itemize}
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\item \texttt{picocom -b 115200 /dev/ttyUSB0}
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\item $n$ beherzte \textit{<ENTER>}-Drücke
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\item Docker: \texttt{docker-compose run esp} (evtl. TTY anpassen)
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\item[exit] Ctrl-a Ctrl-x
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\end{itemize}
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Windows:
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\begin{itemize}
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\item puTTY
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\item Serielle Verbindung
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\item 115200 Baud
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\item $n$ beherzte \textit{<ENTER>}-Drücke
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\end{itemize}
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\end{frame}
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\lstset{language=Python,captionpos=b}
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\begin{frame}{REPL}
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\framesubtitle{Hello World!}
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\image{.7\textwidth}{repl}{REPL}{img:repl}
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\end{frame}
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\subsection{WLAN}
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\begin{frame}[fragile]{WLAN}\framesubtitle{Put the I in IoT}
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\begin{lstlisting}[caption={Descriptive Caption Text},label=DescriptiveLabel]
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import network
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sta_if = network.WLAN(network.STA_IF)
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ap_if = network.WLAN(network.AP_IF)
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ap_if.active(False)
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sta_if.active(True)
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sta_if.connect('SSID', 'SECRET') # TODO: setup
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sta_if.isconnected()
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sta_if.ifconfig()
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\end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]{WebREPL}
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\begin{lstlisting}[caption={Setup für WebREPL},label=webrepl]
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import webrepl_setup
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\end{lstlisting}
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\begin{itemize}
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\item \textit{import webrepl\_setup}
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\item reset/start webrepl (\textit{import webrepl \& webrepl.start()})
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\item visit \url{http://iot.wiai/webrepl/} or \url{http://micropython.org/webrepl/}
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\item enter your ESP's IP (\textit{sta\_if.ifconfig()}) \& connect
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\end{itemize}
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\end{frame}
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\subsection{Init}
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\begin{frame}[fragile]{main.py}
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Wird beim starten ... gestartet
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\begin{lstlisting}[caption={main.py},label=mainpy]
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def connect_wifi(ssid, passphrase):
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#TODO ;)
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pass
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def setup():
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#TODO configure sensors, ...
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pass
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connect_wifi()
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setup()
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\end{lstlisting}
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\end{frame}
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\subsection{Exkurs: Flask-Server}
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\begin{frame}[fragile]{Gegenseite: Flask}
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\begin{lstlisting}[caption={C\&C Server},label=cnc]
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from flask import Flask, request
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app = Flask(__name__)
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@app.route("/")
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def hello():
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return "Hello ESP8266!"
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@app.route("/id/<id:id>", methods=['GET','POST'])
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def log(id):
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app.logger.info("%s was here and delivered '%s'", id, request.data.decode("utf8"))
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\end{lstlisting}
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Starten:
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\begin{itemize}
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\item[!] pip install Flask
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\item python server.py
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\item[||] docker-compose up (server.py in src/)
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\item[||] FLASK\_APP=server.py flask run
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\end{itemize}
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\end{frame}
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\begin{frame}[fragile]{Daten übertragen}
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\begin{lstlisting}[caption={HTTP Requests},label=http]
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import urequests
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host = "http://your.host.ip.here:5000"
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response = urequests.get(host)q
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print(response)
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import machine
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board_id = int.from_bytes(machine.unique_id(), 'little')
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payload = '{"board": "{id}"}'.format(id=board_id)
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json_header = {'Content-Type': 'application/json'}
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post_url = "{host}/id/{id}".format(host=host, id=board_id)
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urequests.post(post_url, data=data, headers=json_header)
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\end{lstlisting}
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\end{frame}
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\section{Basteln}
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\subsection{Blinkende LED}
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\begin{frame}{LED anschließen}
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\image{.4\textwidth}{node-led}{LED \cite{node-led}}{img:led}
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\end{frame}
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\begin{frame}[fragile]{LEDs}
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\setbeamercovered{invisible}
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\begin{lstlisting}[caption={LED},label=led,escapeinside={(*@}{@*)}]
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import machine, time, math
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pin = machine.Pin(0, machine.Pin.OUT)
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pin.on()
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pin.off()
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(*@\onslide<2->@*)
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pwm = machine.PWM(pin)
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pwm.duty(512)
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pwm.deinit()
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(*@\onslide<3->@*)
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def pulse(l, t):
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for i in range(20):
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l.duty(int(math.sin(i / 10 * math.pi) * 500 + 500))
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time.sleep_ms(t)
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led = machine.PWM(machine.Pin(2), freq=1000)
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pulse(led, 50)
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for i in range(10):
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pulse(led, 20)
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\end{lstlisting}
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\end{frame}
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\subsection{Schalter und Taster}
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\begin{frame}[fragile]{Input}
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\image{.35\textwidth}{button-nodemcu}{Taster \cite{node-button}}{img:button}
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\begin{lstlisting}[caption={Input},label=input]
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import machine
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pin = machine.Pin(0, machine.Pin.IN, machine.Pin.PULL_UP)
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# status = pin.value()
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def callback(p):
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print('changed', p)
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pin.irq(trigger=machine.Pin.IRQ_RISING | machine.Pin.IRQ_FALLING, handler=callback)
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\end{lstlisting}
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\end{frame}
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\subsection{Sensoren}
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\begin{frame}[fragile]{Sensoren}
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\image{.35\textwidth}{nodemcu-dht22}{DHT22 \cite{node-dht}}{img:dht}
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\begin{lstlisting}[caption={Sensoren},label=senors]
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import dht
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import machine
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d = dht.DHT22(machine.Pin(4))
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d.measure()
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d.temperature()
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d.humidity()
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\end{lstlisting}
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\end{frame}
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\subsection{Interrupts}
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\begin{frame}{Here be dragons}
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\begin{itemize}
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\item Z.B. Callbacks von Tastern
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\item pausieren main
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\item dürfen keinen Speicher allozieren
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\item Emergency exception buffer: \textit{micropython.alloc\_emergency\_exception\_buf(100)}
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\end{itemize}
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\cite{mp-interrupt}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%% References %%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\section*{}
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\begin{frame}[allowframebreaks]{References}
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\def\newblock{\hskip .11em plus .33em minus .07em}
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\scriptsize
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\bibliographystyle{IEEEtran}
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\bibliography{content/bib.bib}
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\normalsize
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\end{frame}
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\section*{Ausblick}
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\begin{frame}{Was geht noch?}
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\begin{itemize}
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\item \url{https://learn.adafruit.com/micropython-hardware-i2c-devices/overview}
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\item \url{http://luftdaten.info/}
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\item \url{https://micropython-on-esp8266-workshop.readthedocs.io/en/latest/index.html}
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\item \url{http://micropython-iot-hackathon.readthedocs.io/en/latest/index.html}
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\item MQTT, \href{http://nsq.io/}{nsq.io}
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\item Dateisystem
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\end{itemize}
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\end{frame}
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\end{document}
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