From 129a22667006ec4f7ebca9c9d5b8e4d492103304 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Wed, 25 Apr 2018 23:28:02 +0200
Subject: wip

---
 slides/what-is-iot.md | 78 +++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 73 insertions(+), 5 deletions(-)

(limited to 'slides/what-is-iot.md')

diff --git a/slides/what-is-iot.md b/slides/what-is-iot.md
index edc3940..ef11ca3 100644
--- a/slides/what-is-iot.md
+++ b/slides/what-is-iot.md
@@ -63,6 +63,12 @@ What differentiates a computer from an IoT device?
 
 ::: notes
 
+Might not have:
+
+* RTC
+
+Extra features:
+
 * IR
 * UART
 * CAN
@@ -169,10 +175,6 @@ Datasheet page 18
 
 :::
 
-## ESP8266 details - Arduino
-
-https://github.com/esp8266/Arduino
-
 # Going back to basics
 
 ## What is the internet again?
@@ -318,6 +320,73 @@ Note that the "total length" field is 16 bits, 2 bytes, it's maximum value is 64
 \end{center}
 )
 
+## ESP8266 + Arduino
+
+* Standard Arduino IDE
+* ESP8266 Arduino core
+    * https://github.com/esp8266/Arduino
+
+## Arduino IDE
+
+!ifndef(QUICK)(
+![](images/arduino-ide.png)
+)
+
+## Arduino code structure
+
+~~~ .c++
+void setup() {
+    // Called once
+}
+
+void loop() {
+    // Called repeatedly
+}
+~~~
+
+::: notes
+
+MCU programming is often structured into:
+
+* Configure
+    * CPU
+    * GPIO ports
+    * MCU's peripherals
+    * The rest of the board
+    * Configure application and callbacks.
+* Sleep
+
+Arduino chooses to run the cpu at 100% instead of the sleep step..
+
+:::
+
+## Arduino file structure
+
+    foo/
+      foo.ino
+      config.h
+
+::: notes
+
+`foo.ino` must always be in a `foo` directory.
+
+config.h is created by "new tab".
+
+:::
+
+## Generic Arduino APIs
+
+// Pin: D0, D1, etc.
+// Mode: OUTPUT, INPUT, INPUT_PULLUP
+
+~~~c++
+pinMode(pin, mode);
+
+digitalWrite(pin, state);
+
+state = digitalRead(pin);
+~~~
+
 # Lecture: MQTT
 
 ## MQTT
@@ -535,7 +604,6 @@ In between are:
 
 ## Assignment 1: Blink a led
 
-
 ## Assignment 2: Connect to Wi-Fi
 
 ## Assignment 3: Connect to MQTT broker
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