RAK3172 AT, ECHO

Hello,
After setting echo for AT commands, in the responses, in every AT reply the order of the first is changed to . Example:

AT+VER=?
AT+VER=?AT+VER=RUI_4.2.4_RAK3172-EOK

Is this intentional?

Hi @Darek ,

Since you enable echo, it will reply the input command then the reply.

However, in your serial terminal, it seems newline or carriage return is being skipped or blocked.

It shoiuld look like this.

Hi
With echo enabled, after a repeated response I get a reversed combination of lf cr instead of cr lf. Example:
AT cr lf
AT lf cr OK cr lf

Hi Darek,

Will you be able to share me a sequence when it starts to send a reverse combination? Am I correct that it is erratic and not constant? I will share it with our RUI3 team.

From my experience, it turns out that in ECHO mode the modem always repeats the query ending it with lf cr. In the terminal, the effect is the same - moving to a new line, but it causes trouble in parsing.