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hello everyone welcome to controllers
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tech I have already made videos about
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multiple you arts using ring buffer
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I have also covered the basic setup of
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esp8266 Wi-Fi module today in this
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tutorial we are going to create a web
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server using esp8266 Wi-Fi I will show
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you how to use this web server to
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control the LED on the microcontroller
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let's create our project with cube IDE
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first I am using f4 for 6r II give some
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name to this project and click finish
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in the cube MX first of all I am
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selecting the external crystal for the
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next select UART one which will be
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connected to the ESP my esp8266 is also
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at eleven five 200 baud rate turn on the
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UART to is connected to the computer
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leave it also at the same baud rate and
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turn on the interrupts pa5 is connected
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let's go to the clock setup now I have 8
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megahertz crystal I am running system at
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50 megahertz this is just because many
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of you asked me why I always set the
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maximum clock this time I am selecting a
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smaller clock click Save to generate the
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this is our main C file first of all we
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need to copy the library files copy the
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header files in the include folder and C
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files in the source folder you can get
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these files after you download the zip
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now include the esp8266 hull h in the
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let's take a look at it here you get
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these two functions ESP in it
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initializes the Wi-Fi servers start do
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the rest of the job let's just refresh
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this so that all the files will be added
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you are drink off a multi dot C I have
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already told you about this in my
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previous videos change the you arts
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according to your setup here also modify
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we need to copy this and put this in the
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we also need to change the default
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interrupt handlers for the UART one and
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let's just build it once to check for
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let's see the esp8266 dot see now again
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we need to change the UART handlers
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according to our setup my Wi-Fi is
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connected to UART one and computer to
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UART two this is the HTML code for the
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web page it contains four sections
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initial part led on LED off and the
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ending part you can change this
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according to your convenience let's see
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the initialization function first reset
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the ESP and wait for five seconds for it
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to settle next we will send a tea and
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wait for okay response next command is
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CW mode equals to 1 this will set the
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module in the station mode next command
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is to join the access point provided in
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the parameter of this function
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CIFS our command is to query for the IP
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address and finally we will start the
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server at port 80 server send will send
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the string to the device which is trying
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to connect to this IP address server
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handle is to handle the requests for
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different pages like what to do
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if the LED on request is received or LED
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off request is received basically we
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will send the initial part than LED on
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and then the ending part to the server
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server start will read the incoming
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request and then proceeds accordingly
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let's write the main functions now first
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of all we need to initialize the ESP I
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have created a hotspot on my phone and
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these are the credentials for it
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now put server start in the while loop
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and that's it let's debug it now click
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let's run it now you can see the output
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on the console here 80 is okay and now
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it is connecting to the access point it
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have returned our IP address my another
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phone is also connected to the same
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access point we will go to the IP
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address and here we got our webpage
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notice the LED on board
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so everything is working all right
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nothing happens when we refresh the page
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you can download the code from the link
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in the description I will keep updating
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this code in future and all the new
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details will be published on the website
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I will try making a data logger using
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Wi-Fi this is it guys I hope you will
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make some good use of it have a nice day
