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authorTrygve Laugstøl <trygvis@inamo.no>2018-06-13 20:02:36 +0200
committerTrygve Laugstøl <trygvis@inamo.no>2018-06-13 20:02:36 +0200
commite4bdeee49319bc5570dfa0e998e4e68f3c33ee8c (patch)
tree27a4fc54611746d2c3c74f9412e68e0032f76ac1 /slides
parent970b9667089f08a606d9df53d72123095f452a58 (diff)
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Diffstat (limited to 'slides')
-rw-r--r--slides/.gitignore3
-rw-r--r--slides/Makefile7
-rw-r--r--slides/TODO.md5
-rw-r--r--slides/connected-arduino.md93
-rw-r--r--slides/images/mqtt-seq.pdfbin0 -> 12113 bytes
-rw-r--r--slides/images/mqtt-seq.pgf46
-rwxr-xr-xslides/images/pp-template8
-rw-r--r--slides/images/qtikz-template.pgs3
8 files changed, 102 insertions, 63 deletions
diff --git a/slides/.gitignore b/slides/.gitignore
new file mode 100644
index 0000000..d8071c4
--- /dev/null
+++ b/slides/.gitignore
@@ -0,0 +1,3 @@
+*.tmp.tex
+*.log
+*.aux
diff --git a/slides/Makefile b/slides/Makefile
index 4f2b761..e92b20f 100644
--- a/slides/Makefile
+++ b/slides/Makefile
@@ -72,6 +72,13 @@ $(BUILD_DIR)/%.revealjs.md.d: %.md | $(BUILD_DIR)
%-reveal.html: %.revealjs.md
$(RUN_PANDOC_REVEALJS) -o $@ $<
+images/%.pdf: images/%.pgf | images/pp-template Makefile
+ images/pp-template $< > $(patsubst %.pgf,%.tmp.tex,$<)
+ TEXINPUTS=./:images/tikzuml-v1.0-2016-03-29: \
+ xelatex -output-directory=images \
+ -jobname $(notdir $(basename $@)) \
+ $(patsubst %.pgf,%.tmp.tex,$<)
+
images/%.pdf: images/%.tex | images/pp-template Makefile
images/pp-template < $< > $(patsubst %.tex,%-full.tex,$<)
xelatex -output-directory=images $(patsubst %.tex,%-full.tex,$<)
diff --git a/slides/TODO.md b/slides/TODO.md
new file mode 100644
index 0000000..ae81edd
--- /dev/null
+++ b/slides/TODO.md
@@ -0,0 +1,5 @@
+Slide: *Device and application architecture with MQTT*
+
+* Add one-way pointers for TCP, keep existing as MQTT messaging.
+ Illustrates that everyone connects to the broker, but messages can
+ be pushed. Contrast to HTTP.
diff --git a/slides/connected-arduino.md b/slides/connected-arduino.md
index 6a6b5e7..79ba123 100644
--- a/slides/connected-arduino.md
+++ b/slides/connected-arduino.md
@@ -292,6 +292,36 @@ Version 3.1.1 er den som gjelder, V 3.1 er rar, de andre finnes ikke
\end{center}
)
+## MQTT Topic
+
+The temperature sensor:
+
+* Publishes on:
+ * `myapp/$device-id/temperature`
+ * `myapp/$device-id/humidity`
+ * `myapp/$device-id/altert`
+* Subscribes to:
+ * `myapp/$device-id/command`
+
+The central application:
+
+* Subscribes to:
+ * `myapp/#/temperature`
+ * `myapp/#/humidity`
+* Publishes on:
+ * `myapp/$device-id/command`
+
+::: notes
+
+Typical first round of implementation.
+
+Commands can be:
+* load new firmware (maybe an URL and firmware signature).
+* Set new calibration values
+* Change reading interval, altert levels (autonomous operation)
+
+:::
+
## MQTT - Implementations
* Mosquitto
@@ -334,12 +364,13 @@ Agents have one of two roles:
* *Client*
* Publishes *messages*
* Subscribes / unsubscribes to *topics*
+ * Keep alive
* *Broker* (aka Server)
* Handles network connections
* Keeps subscriptions
* Manages client
- * Disconnects
+ * Timeouts and disconnects
* *(last) will*
* Persistence of retained messages
@@ -359,36 +390,6 @@ Push vs pull, central applications can push to clients
:::
-## MQTT - The protocol - MQTT Packet
-
-* Size oriented
-* Flags indicate type of remaining bytes
- * Packet type
- * Topic name
- * Payload
-
-::: notes
-
-Only packet type + flags (1 byte) is required, everything else is optional.
-
-The size field is variable length encoded, 0-127 bytes is 1 byte, 128-16383 use 2 bytes etc, up to 4 bytes for 256MB payload.
-
-:::
-
-## MQTT Connect
-
-* `CONNECT`
- * `clientId`
- * `username`
- * `password`
- * `keepAlive`
-
-<!-- -->
-
-* Keep alive
- * `PINGREQ`
- * `PINGRESP`
-
## MQTT - The protocol - MQTT Topic
* Topic name: `foo/bar/baz`
@@ -441,36 +442,6 @@ Broker
* `$app/$device/online`
* `0`
-## MQTT Topic
-
-The temperature sensor:
-
-* Publishes on:
- * `myapp/$device-id/temperature`
- * `myapp/$device-id/humidity`
- * `myapp/$device-id/altert`
-* Subscribes to:
- * `myapp/$device-id/command`
-
-The central application:
-
-* Subscribes to:
- * `myapp/#/temperature`
- * `myapp/#/humidity`
-* Publishes on:
- * `myapp/$device-id/command`
-
-::: notes
-
-Typical first round of implementation.
-
-Commands can be:
-* load new firmware (maybe an URL and firmware signature).
-* Set new calibration values
-* Change reading interval, altert levels (autonomous operation)
-
-:::
-
## MQTT on Arduino
PubSubClient is our MQTT client implementation.
diff --git a/slides/images/mqtt-seq.pdf b/slides/images/mqtt-seq.pdf
new file mode 100644
index 0000000..bcee05d
--- /dev/null
+++ b/slides/images/mqtt-seq.pdf
Binary files differ
diff --git a/slides/images/mqtt-seq.pgf b/slides/images/mqtt-seq.pgf
new file mode 100644
index 0000000..8001ec1
--- /dev/null
+++ b/slides/images/mqtt-seq.pgf
@@ -0,0 +1,46 @@
+\begin{tikzpicture}
+\begin{umlseqdiag}
+
+\umlactor{Device}
+\umlactor{Broker}
+\umlactor{Central}
+
+\begin{umlcall}[op={sub(dev/\#/online)}]{Central}{Broker}
+\end{umlcall}
+
+\begin{umlcall}[dt=15, op={con(dev/123/online, 0)}]{Device}{Broker} \end{umlcall}
+\begin{umlcall}[dt=5, name=pub,op={pub(dev/123/online, 1)}]{Device}{Broker} \end{umlcall}
+
+%\begin{umlcallself}[dt=5, op={terminate()}]{Device}\end{umlcallself}
+
+%\umlnote{death}{woop}
+\umlnote[x=-3,y=-2]{sb-pub}{After this the device drops off the Wi-Fi}
+
+
+\begin{umlcall}[dt=10, op={pub(dev/123/online, 0)}]{Broker}{Central} \end{umlcall}
+
+%\umlsdnode[dt=20]{Central}
+%\umlsdnode[dt=5]{Broker}
+%\begin{umlcall}
+%\end{umlcall}
+
+\iffalse
+\begin{umlcall}{A}{C}
+ \begin{umlcall}{C}{A}
+ \end{umlcall}
+
+ \begin{umlcall}[dt=10]{B}{C}
+ \begin{umlcall}{C}{B}
+ \end{umlcall}
+
+ \begin{umlcall}[return=1]{B}{C}
+ \end{umlcall}
+ \end{umlcall}
+
+ \begin{umlcall}[dt=20, return=1]{A}{C}
+ \end{umlcall}
+
+\end{umlcall}
+\fi
+\end{umlseqdiag}
+\end{tikzpicture}
diff --git a/slides/images/pp-template b/slides/images/pp-template
index 8021025..3e51cc9 100755
--- a/slides/images/pp-template
+++ b/slides/images/pp-template
@@ -1,8 +1,12 @@
#!/bin/bash
+set -e
+
echo '\documentclass[preview]{standalone}
\usepackage{blindtext}
-\usepackage[utf8]{inputenc}
+%\usepackage[utf8]{inputenc}
\usepackage{tikz}
+\usepackage{tikz-uml}
+%\usepackage{pgf-umlsd}
\usetikzlibrary{
angles,
arrows,
@@ -24,5 +28,5 @@ echo '\documentclass[preview]{standalone}
\usepackage{fontspec}
\setsansfont{Verdana}
\begin{document}'
-cat -
+cat "$1"
echo '\end{document}'
diff --git a/slides/images/qtikz-template.pgs b/slides/images/qtikz-template.pgs
index edb322b..c2fd323 100644
--- a/slides/images/qtikz-template.pgs
+++ b/slides/images/qtikz-template.pgs
@@ -2,7 +2,10 @@
\documentclass[preview]{standalone}
\usepackage{blindtext}
\usepackage[utf8]{inputenc}
+\usepackage[english]{babel}
\usepackage{tikz}
+\usepackage{tikz-uml}
+\usepackage{pgf-umlsd}
\usetikzlibrary{
angles,
arrows,