ESP8266 GPIO Configuration via AT Commands Over UDP Not Responding

Hi,

I want to implement the following task. Using UDP protocol and AT commands, I want to send GPIO configuration to ESP8266 as output.

What I am managing to achieve:
1) GPIO configuration via AT commands sent via RS232 terminal.
2) Sending data to ESP8266 via UDP - ESP8266 is running in transparent mode.

However, I have the problem that a command sent from UDP, e.g. "AT" goes to the ESP8266 and I can see it in the terminal, but it does not result in an "OK" response - as happens when I type this command by hand.

What could be the cause of this? Where am I making a mistake? How do I get the ESP8266 to receive "AT" as an AT command and not as plain text?

Thanks in advance for any hints.

It is possible that you are not sending the end-of-line character chr(10) or chr(10) + chr(13)

czareqpl wrote:

Possible that you are not sending the end-of-line character chr(10) or chr(10) + chr(13)

.

Sending. Unfortunately, the data is interpreted as text, not as AT commands. Any ideas?

Added after 11 [minutes]: .

This is what the data sent from the UDP terminal looks like:

.

This is what the data looks like when received at the terminal to which the (RS232) ESP module is connected:
.

And this is what the data looks like when I enter the commands in the terminal to which the (RS232) ESP module is connected and, of course, the control works:

.

Do I need to indicate in any specific way that I am sending an AT control command? So that the module interprets it in this way[/img]?

Hello,
you probably need to write a program to handle the control of AT commands via UDP.

Greetings.

mpier wrote:

Hello,
you probably need to write a program to handle the control of AT commands via UDP.

Greetings.

.

Hi,
I am using the "AT" firmware from the Espressiff website. I just wanted to use it for this purpose and send AT commands via UDP terminal.

So this esp8266 connected to the computer as a modem is supposed to reset itself, after loading this thread in the browser, in which I maliciously wrote "+++ AT+RST"?

I think it's easier to write a proper program than to rework the one with AT.

Can you force the device connected to this esp to send the appropriate commands in response to commands received?

mpier wrote:

That is, this esp8266 connected to the computer as a modem is supposed to reset, after loading in the browser this thread in which I maliciously wrote "+++ AT+RST"?

I think it's easier to write a proper program than to rework the one with AT.

Can you force the device connected to this esp to send appropriate commands in response to commands received?

.

The issue is as follows. I have written an application in C# to communicate with the ESP using the UDP protocol - it works. However, the received commands are not identified by ESP as AT commands, but as text (as above in the screenshots). And exactly as you say, if I wanted to send the command: "AT+RST" then my goal would be to get the effect of a prock reset. Meanwhile, I only receive the text "AT+RST" - from UDP.

Generally, writing a ready-made program - or using a sketch from an Arduino - is not a problem, and I have covered this topic.

I also don't want the ESP to be an intermediary - i.e. e.g. ESP-01 connected via RS232 with another microcontroller and then the correct response to the message sent. What I want is for the ESP-01 to act as a full-fledged proxy, with the ability to control a single GPIO via UDP - i.e. over UDP I send it a series of AT commands and its response is to issue a high/low state on GPIO1 for example. I manage to achieve this, but when I type the commands in the terminal (RS232) manually, not when they come over UDP. And here I'm wondering if I shouldn't send the data by UDP somehow "dress" it up so that the AT firmware in the ESP-01 understands that it's a control command and not just a string .

mtbchn wrote:

I manage to do this, but when I enter commands in the terminal (RS232) manually, not when they come over UDP. And here I am wondering if, when sending data by UDP, I shouldn't "dress it up" somehow so that the AT firmware in the ESP-01 understands that it is a control command and not a simple string

.
I'm afraid the AT firmware doesn't have the functionality you expect. You can, however, query from the ESP side over TCP or UDP and retrieve data.

khoam wrote:

mtbchn wrote:

I manage to do this, but when I type the commands in the terminal (RS232) manually, not when they come over UDP. And here I'm wondering if, when sending data by UDP, I shouldn't "dress it up" somehow so that the AT firmware in the ESP-01 understands that it's a control command and not a simple string

.
I'm afraid the AT firmware doesn't have the functionality you expect. You can, however, from the ESP side query over TCP or UDP and retrieve data.

Thanks for the reply.