Elektor - Makerfabs MakePython ESP32 Development Kit

[BBE-AD]

Hi. All new to this, so learning.

I am using the Elektor Makepython ESP32 Development Kit.
Been having trouble following examples in book. just figured out that I should have flashed V3.x V1.14 firmware to the ESP32-Wrover-B board and not the V4.x V1.19. Note in book it says - instead of -- (I guess word auto corrected it to one big dash from two dashes) on the Command prompt when flashing the firmware. I now have most of the projects working in the book. figured out some commands must be capitalised instruction and some are lowercase. I am trying to do the Web Page project. I finally got it to connect using the Iphone Safari Browser or an old PC with XP Internet explorer (Guess there is not much security so new Browsers refuse to connect). I had to remove the following instruction.

Note the 'import network' is called at the start of the code, just not shown in the below snippets.

if not net.isconnected():
from the Original Code below.

def Connect_WiFi():
    net = network.WLAN(network.STA_IF)
    if not net.isconnected():
        net.active(True)
        net.connect("SSID", "Password")
        print(net.ifconfig())

#
# Connect to local Wi-Fi
#
    Connect_WiFi()
    addr=socket.getaddrinfo("0.0.0.0",80)[0][-1]
    s = socket.socket()
    s.bind(addr)
    s.listen(1)

Had to remove the 'Is Not' and move the code back an indent to make it work.
I also found some code that should show if it is already connected, but it just produced errors.
SSID is where I enter my SSID of the network and Password is where I enter the Password...
I see some examples where they say 'Password' and other say "Password", don't know if it makes a difference between one quotation mark or two quotation marks ( ' or " )

def Connect_WiFi(): #Define "Connect_WiFi"
    import network #Import Or Load The Network Module
    
    net = network.WLAN(network.STA_IF) #Make net = Network Set Up As A Station (Receiver).
    #net.active(False)
    #if not net.isconnected():
    
    #if net.isconnected() == True #Display A Message If Allready Connected To A Network
    #print("already Connected")
    #print(net.ifconfig())
    #return
    
    net.active(True) #Activates The Wifi Connection
    net.connect("SSID", "Password") #Connect to "SSID" Using "Password"
    
    print("Connection Successful")
    print(net.ifconfig()) #Print Connection Information, Current IP, Subnet, Gateway ,DNS

#
# Connect to local Wi-Fi
#
Connect_WiFi()
addr=socket.getaddrinfo("0.0.0.0",80)[0][-1]
s = socket.socket()
s.bind(addr)
s.listen(1)

there is more code, including a HTML section for the imbedded Web Page. The problem is it does not work when I have the extra 'Is Not' statement in the code. I see other people using as well. is it something to do with the V3.x or V4.x firmware, still not sure why there is a difference with that.

I have V1.14 IDF3 installed into the ESP32 Development Board as per the books instructions. Using Thonny V4.0.1 and Python V3.11.1

Thanks in advance for any help provided

[davefes]

Unless you are escaping quotation marks inside a print statement it doesn't matter which ones you use. Single quotes are quicker to type.

Deleted incorrect example of connecting.

[karfas]

Maybe you should consult the fine documentation at https://docs.micropython.org/en/latest/esp32/quickref.html ?

wlan.connect() runs in the background.

There is a reason that the example do_connect() function found above waits for the connect() to complete using

        wlan.connect('ssid', 'key')
        while not wlan.isconnected():
            pass

[peterhinch]

Note that do_connect() in the docs (which does work) calls wlan.active() before testing .isconnected(). I think the lack of that statement is the reason why the code in the OP failed.

[BBE-AD]

Hi All thanks for the replies, I entered the code from the latest ESP32 Quick reference website and get the same response as I did with the code from the book. normally I see on the Thonny command line the text 'Connecting to Network...' followed by the configuration IP, netmask, Gateway, DNS. When I run the code below I get nothing, no text or anything. When I try to see what wlan.ifconfig() is it tells me wlan was not defined. any thoughts on what i am doing wrong? I think I solved it below after hours of playing.

def do_connect():
    import network
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print('Connecting To Network...')
        wlan.connect('SSID', 'Password')
        while not wlan.isconnected():
            pass
    print('Network Config:', wlan.ifconfig())

I then added import machine & import socket at the start and added the extra code below the above code. and now it connects. I guess without the defined do_connect() section added it does not process the rest after 'def' in defining the 'do_connect()

do_connect()
addr=socket.getaddrinfo("0.0.0.0",80)[0][-1]
s = socket.socket()
s.bind(addr)
s.listen(1)

Still learning :)

[karfas]

When I run the code below I get nothing, no text or anything. When I try to see what wlan.ifconfig() is it tells me wlan was not defined. any thoughts on what i am doing wrong? I think I solved it below after hours of playing.

This is not unexpected, as def do_connect(): defines a function. You need to call it (as you found out) to execute the code.
However, this is not different from the Connect_WiFi() in the second example in your original post, so what ?

I think you should also read some introduction to python programming to get an idea about functions, variables, variable scope and so on.