How do I save an empty password in the code? Wi-Fi configuration.

Hi.
I have a program that allows me to set up a wifi connection from a browser. Sketch works fine but I am fine with configuring without a wifi password for some reason. I have corrected the program to the point that it ingests the configuration without a password but after that esp crashes and I have to give it a manual reset. After that it works fine. Probably the program crashes on trying to save a blank password. I have added comments in the code where I made the changes.
I would not like to throw away the original functionality just to add the ability to save a blank password.
Can you suggest a solution?

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khoam wrote:

pier wrote:

I wouldn't want to throw away the original functionality just add the ability to save an empty password.

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If it's going to be "blank", why save it? Are you talking about logging into an open WiFi network?

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You have to save something because otherwise the "configurator" doesn't execute. This is how I want to log in to the open network, for now at least but this will change in the future.

khoam wrote:

Insert after line:

Code: C / C++

Log in, to see the code

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in addition:

Code: C / C++

Log in, to see the code

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What value is shown:

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Value = 0

This is the end of the record from the monitor serial:
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khoam wrote:

Strange, but it looks like the WTD is being triggered due to insufficient current capacity of the ESP power supply and a drop in supply voltage.

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And wait wait wait because I am powering from the adapter already switching on the battery power.

But no, correct power supply doesn't change anything. Still the same serial message and crashes.
After the sequence turn off on correctly connects to the open network.

khoam wrote:

Instead of EEPROM.commit() type:

Code: C / C++

Log in, to see the code

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I'm curious if it's on commit that it crashes. A properly executed commit returns true, so it should display "1".

It displays "1⸮"

khoam wrote:

This next command that can trigger WTD is just ESP.reset() .
Maybe try using ESP.restart().

Didn't help. WDT reset twice and it hangs.

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I think I'll let it go. For testing it will be what it is and then I'll secure the network anyway because I'll have neighbours eventually.

khoam wrote:

For the record, before ESP.reset() or ESP.restart() there should be an EEPROM.end() command and a WiFi stop.

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Khoam but before my code modification these commands were not there and everything worked as expected.