Web Service Clients on Raspberry Pi Pico W(C++)

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Dr Jon Durrant

6:04:30

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1. Introduction

1. Introduction.mp4

04:11

2. Introducing Your Tutor.mp4

02:14

3. Course Approach.mp4

06:40

4.1 1-Introduction.pdf

4.2 1-Notes.pdf

4. Section Summary.mp4

00:19

2. First Service Client

1. Section Goals.mp4

02:12

2. Pico W Setup.mp4

02:02

3. Code Deployment or Flashing.mp4

02:44

4. Course Code Repository Structure.mp4

08:53

5. Connecting to Wifi.mp4

12:27

6. Assignment Connect to Wifi.html

7. IP Geolocation Service.mp4

06:23

8. First Pico-W Client.mp4

08:57

9. Assignment IP Geolocation Service.html

10.1 2-First Service.pdf

10.2 2-Notes.pdf

10. Section Summary.mp4

00:41

3. Web Services Origin and test Environment

1. Section Goals.mp4

01:36

2. Origin of Web Services.mp4

02:25

3. Web Service Standards and RESTful Web Services.mp4

09:13

4. Web Services Quiz.html

5. Test Environment Python.mp4

03:22

6. First Web Service.mp4

15:23

7. Environment Setup and Service Assignment.html

8. Parameters over GET Web Service.mp4

05:47

9. Web Service based on HTTP POST.mp4

04:48

10. Get and Post Assignment.html

11. Authentication for a Web Service.mp4

07:21

12. Debugging Web Services Proxy Server.mp4

06:58

13.1 3-Notes.pdf

13.2 3-Web Services.pdf

13. Section Summary.mp4

01:39

4. URI and URL

1. Section Goals.mp4

02:40

2. What is an URI and an URL..mp4

07:03

3. URI Library to Parse a URL.mp4

07:04

4. URI Parser Library to Parse a URL.mp4

07:01

5. Parse Your Local Python Server URL.html

6.1 4-Notes.pdf

6.2 4-URI.pdf

6. Section Summary.mp4

00:45

5. LwIP HTTP Client

1. Section Goals.mp4

02:17

2. LwIP Library.mp4

05:17

3. LwIP HTTP Client.mp4

18:11

4. Assignment HTTP Get Request.html

5. Request Query.mp4

14:48

6. Debugging LwIP HTTP.mp4

05:48

7. LwIP HTTP Client Limitations.mp4

03:08

8.1 5-LWIP.pdf

8.2 5-Notes.pdf

8. Section Summary.mp4

00:26

6. JSON

1. Section Goals.mp4

01:45

2. Introducing JSON.mp4

04:21

3. TinJSON Library.mp4

06:29

4. CoreJSON Library.mp4

07:23

5. Parsing Date and Time from Web Service.html

6.1 6-JSON.pdf

6.2 6-Notes.pdf

6. Section Summary.mp4

00:32

7. FreeRTOS coreHTTP

1. Section Goals.mp4

02:35

2. FreeRTOS Kernel and LwIP.mp4

03:46

3. POSIX Sockets.mp4

26:15

4. HTTP GET.mp4

17:28

5. HTTP POST.mp4

07:34

6. Temperature Sensor POST Web Service.html

7.1 7-coreHTTP.pdf

7.2 7-Notes.pdf

7. Section Summary.mp4

00:47

8. HTTP Security

1. Section Goals.mp4

01:50

2. HTTP Basic Authentication.mp4

10:59

3. TLS Transport.mp4

22:04

4. TLS HTTP Request Client.mp4

04:58

5. Assignment IPGeolocation.html

6. TLS Identity.mp4

03:03

7.1 8-Notes.pdf

7.2 8-Security.pdf

7. Section Summary.mp4

01:04

9. Parsing XML Payloads

1. Section Goals.mp4

01:13

2. XML the Basics.mp4

04:48

3. MXML Library.mp4

05:32

4. MiniML Library.mp4

05:46

5.1 9-Notes.pdf

5.2 9-XML.pdf

5. Section Summary.mp4

00:43

10. Congratulations and Examples

1. Congratulations and Optional Goals.mp4

02:29

2. Course Recap.mp4

08:41

3. Debugging Web Services.mp4

09:56

4. YouTube Subscription Ticker.mp4

03:04

5. Weather Forecast.mp4

04:19

6. Currency Rates Ticker.mp4

02:23

7.1 10-Congratulations v2.pdf

7.2 10-Notes.pdf

7. Thank You.mp4

02:00

Description

Restful Web Services for the Raspberry Pi Pico W

What You'll Learn?

Understand Restful Web Services Concepts
Write Web Service clients on the Raspberry Pi Pico using LWIP
Write Web Service clients on the Raspberry Pi Pico using coreHTTP
Write Web Service servers on the Raspberry Pi Pico using LWIP
Write Web Service servers on the Raspberry Pi Pico using Socket based HTTPD

Who is this for?

IoT developers

Hobbyist working on IoT and Web Service projects

Embedded developers

What You Need to Know?

Able to work with the Raspberry Pi Pico SDK Toolchain

Able to programme in C/C++ on microcontroller

Awareness of computer networks (IP and Ethernet)

Able to install software and configure firewall on own laptop or desktop

Basic knowledge of Python which will be used for test clients and servers.

More details

Description
Using Web Services I can pull real-world data for my Raspberry PI Pico W to act on. Or submit sensor data from my Pico W to central services in an IoT pattern. Web Services enable us to connect the Pico W to a wider world of exciting distributed systems.
In this course, we explore how to code C/C++ for a Pico-W to become a web service client. We look at two fundamental libraries to manage the HTTP protocol; LWIP HTTP App and coreHTTP. coreHTTP requires that we also use FreeRTOS kernel and LWIP Sockets. The library gives us a great deal of flexibility and with wolfSSL allows us to connect to HTTPS web services.
The restful web services we primarily target on the course respond with JSON payloads. The course teaches how to parse these using two optional libraries coreJSON and tiny-JSON. Some web service payloads return XML and a further two libraries are explored to be able to handle these payloads.
The course uses STDIO for the output of most web services. Two examples use a pre-built Pico-W display board, the PIMORONI Galactic Unicorn. One example uses a TFT screen, this will needs to be wired to the Pico W. Optionally you could modify these examples to produce STDIO or use alternative hardware.
The course assumes knowledge of C++. Though each example walks through the functionality, the course will not talk about the syntax of C++. FreeRTOS Kernel is used to support concurrent tasks and enable POSIX Sockets. An understanding of FreeRTOS Kernel is assumed. I have another course on FreeRTOS Kernel for the Raspberry PI Pico to cover this.
The course assumes you can compile and deploy C++ code to the Pico Q using the Raspberry PI Pico SDK. My other course â€œIntroduction to C Development Environment for Raspberry PICOâ€ teaches these skills.
A web service test environment to support building and understanding these web services clients uses Python. Some Python knowledge would be helpful.
Who this course is for:
IoT developers
Hobbyist working on IoT and Web Service projects
Embedded developers

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25+ years experience of IT and Data experience across academia and commercial sector. I have worked on embedded systems, global enterprise systems, data warehouses and data lake.In my day job I lead Data and IT departments' architecture functions. I work with the business to align IT and Data Strategy with the Business Strategy. I work to plan out roadmaps of change to address the business challenges and enable IT and Data initiatives to be treated as an investment for return.In my off hours, I work as a hobby developer working on embedded IoT technologies. Some of my projects have included smart clocks, a clock that looks like a slot machine, pan and tilt security cameras, and hexapod robots. I primarily develop around the Raspberry PI and Raspberry PICO (RP2040) hardware devices with cloud services from AWS. I develop in a number of languages include C, C++. Java, Python, and Node.Dr Jon EA Ltd - UK Registered Company 14359330

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