LA66 dragino shield with arduino uno AT Commands does not seem to work

[stache06]

Hi,
I have two arduino uno both connected to a dragino LA66 shield and I tried to send and receive a simple "hello world " message from one to another by starting by this tutorials but I do not understand how it works (where the message can be fetched ?)?
Do you have a simple example sending and receiving a message from one to another la66 shield ?
Loading this code on both the arduino uno and executing
AT+SEND=12:hello I do not see the message on the other one.
This topic has been addressed in this subject but no answers has been given.
Any suggestions is welcome.
Thanks in advance

[horace]

have you connected the LA66 to the UNO using pins 10 and 11? e.g.

SoftwareSerial LA66_serial_port(10, 11);    // Arduino RX, TX ,

looking at LA66 AT commands have you tried commands such as

AT+CFG

which displays configurations

[stache06]

Thank you for your answer.
Yes I followed this code given by the documentation.
The command AT+CFG gives a list of configurations:

Now I would want to send a « hello world » message from one device and receive it from the other one.

[horace]

if AT+CFG works OK on both devices have a look at Instruction for LA66 Peer to Peer firmware
e.g. to send a message

 AT+SEND=1,hello world,0,3

and at the receiver

AT+RECV=1

[stache06]

@horace

AT+SEND=1,hello world,0,3

When I execute this AT command I got AT_PARAM_ERROR:

And When I execute AT+RECV=1 I get the same error:

I tried to reset the MCU with ATZ and Reset Parameters to Factory Default with AT+FDR but it does not change anything.
Following this I tried :
AT+SEND=12:helloworld and AT+RECV=? I don't get an error but nothing happens when I sent the message.