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Hi and welcome to a new section in this course in this section.

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I'm going to show you how to use the Wi-Fi capabilities of the ESPN three to my controller using micro

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python.

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And I'm going to do that by guiding you through a series of lectures which contain examples on how to

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interact with various Web resources to send and receive data using simple requests, especially to get

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and post hated requests.

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In this first lecture of the section, I want to walk you through some of the fundamental resources

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that will be using again and again throughout these lectures and in a way set the ground for what you're

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about to learn and what you're about to see.

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So let's begin.

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First of all, let's talk a little bit about the practical examples that you're about to see.

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I'm going to be using resources such as DeWit, DOD, Eyo, and if this and that and open weather map

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do it as well as my own website in order to play around with the capabilities of micro python when it

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comes to interacting with Web resources, for example, with the DOD, I will show you how you can use

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tweets to API and rest API to Sentara with.

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If this event, I'll show you how to generate an email from a post requests coming from your HP 32 with

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dummy.

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Since the data, I'm going to show you how to get the current weather conditions for anywhere on the

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planet using a weather map, dot org and its open API.

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And to begin with, I'm going to show you something very simple, which is how to read this text file,

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which I have uploaded onto my own website, a very simple way to get started.

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So these are some of the things that we'll be doing and will be, of course, analyzing in detail what's

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happening with each one of these examples, especially in terms of the software.

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Now, having said software, let's flip over to the other side, have a look at the hardware and basically

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this is it to conduct all of the experiments in this section, you just need to be able to microcontroller

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connected to your computer.

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And we're not going to use any pitfalls around that just to keep things as simple as possible.

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Whenever we need to use some sensor data to send them to our remote web resource or just simulate the

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sense of data with random numbers, that's just good enough since our focus here is on the Wi-Fi and

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communications capabilities and methodologies instead of the hardware components that could generate

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real world data sets of data.

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All right.

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Now about the individual software components that pretty much all of our examples groups will be using

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a first one to show you the networking module.

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So I'm looking at the quick reference for the E.S.P three to here and there that you'll find networking.

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And this is just an example of how you can set your ISP 32 to use your Wi-Fi network.

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All you've got to do is to create the wireless LAN object.

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Basically, you posted this comment here and it will land.

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And then inside the parentheses, you pass a parameter that indicates a type of network that you want

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to connect to or that you want to create.

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So you got really two options.

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The first one is the one that you will be using in the examples that follow.

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You are connecting to a station that exists to a hotspot, in other words.

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Alternatively, if you need, you can create an access point interface, which means that you can get

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your authority to act as an access point.

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I'm not going to be using this mode of operation, but if anyone is interested in this enough interest

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out there, I may consider creating one or more lectures exploring this capability as well.

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After that, we activate the interface.

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Then you can use this scan method to look around for wi fi hotspots in this command would actually list

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them onto the schill or we're not going to be doing that because we know which network we want to connect

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to by the network name and password.

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So then we can use the connect.

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Method, we passed the name of the network in a password and that achieves connection.

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After that, we can start using the wi fi connection and sent out HATSUKO requests and send and receive

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data from around the Internet.

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So this is the first one.

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Next, I'll be using Jason or the Jason module, and in particular the some of the micro Jason module

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that comes with my code python to help me deal with Jason files.

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Either Jason files that code wi fi or remote asset credentials in a separate file outside of the Micro

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Python script, or in some cases, for example, with the DOD does enter open a weather map that's there

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as well.

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The response coming from those resources is Jason formatted file.

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And therefore, I'm going to use you, Jason, to decode it or to encode it as I'm sending data in and

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out of the you Jason module that comes with micro python is a micro implementation of the C or C language

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python module called Jason.

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So I've also linked to the actual C Python Jason module because here you can see full examples of how

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to use Jason.

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You, Jason, is a partial implementation of the full C language Python Jason module and it only implements

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certain functions here.

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So as I said, it's a micro implementation of the full chasten module.

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So basically the way that you can use this is to use this documentation to see which of the Jason functions

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have been implemented in Micro Jason.

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And then you can go to the full Jason documentation and look at how those particular implemented functions

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works at this dump, for example, which is implemented in micro.

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Jason, you can learn about its actual use by looking at the full C language python implementation of

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the same function.

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Of course, I'll be showing you how I'm using Micro Jason in the example scripts.

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Another very important module that I'll be using in all of the examples is your requests, which is

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a micro implementation of the full requests module that is available in Python.

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So this is not a core component of the Python language, but it's a third party module and it basically

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makes it very easy to do get post delete in other types of requests so you can see the full vocabulary

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that's available here.

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And what I really like about your requests and requests, of course, is how easy it is to learn and

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to use.

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So basically, here it is.

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You just need to import requests or requests in our case and to do a simple get request.

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It's easy as one line of code another that we can just simply read and interact with the response that

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we're getting from the server that is now stored in this example, our object, which is the response

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object you can see here.

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So in other words, just to finish with this segment, the requests module that will be using in all

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of the examples that are coming up is a implementation or micro implementation of the full Python requests

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module it provides us with.

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These features will be using the get and post verbs here for the vocabulary.

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And if you want to learn more about how to use it, you can refer to the documentation.

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But of course, it's, as I said, so simple to use that.

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Just looking at the example scripts that I have prepared will be enough to get you a long way through

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implementing your own scripts and your own requirements from your scripts.

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OK, so that's about it.

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With the preliminaries, let's jump into the next lecture.

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We'll show you how to do that simple yet request.