serial connection between nrf52 & arduino

[achraf]

Hello ,
I m working on project to commande sim868 by serial (send AT Commands),
so for the fisrt i would like to test the serial connection with an arduino to see what it gives 
the sdk is 15.0.0 and nrf52832 , and connect the rx and tx to tx and rx of arduino , i used the uart example(nRF5_SDK_15.0.0_a53641a/examples/peripheral/uart)

I edited the rx and tx app_uart_comm_params_t comm_params {

 15, //RX_PIN_NUMBER 17, //TX_PIN_NUMBER }

It send  UART example started and I am able to see it with the console of the arduino but therese no way to respond from the arduino .
I think im confused with the example so i tested the serial example but nothings happend even if I edite the numbero of rx and tx to my custom pins used.
how this things works , why its everything its hard to see how it works and to use it , even documentation of the examples shows litle texte that work with putty (I test it but it dosent work for me maybe because I have mac ).

[Simonr]

Hi

You are able to see the "UART example started" message on the Arduino side. That means that whatever you write from the Arduino, should also appear on that same screen because that is what the UART example does. Do you see what is written by the Arduino as well? The UART example only communicates with the one device it is connected to (the Arduino in your case) and is not connected by UART to the computer in the setup you're describing.

Best regards,

Simon

[achraf]

Simonr said:

Do you see what is written by the Arduino as well?

no i guess i cant because the nrf connected by jlink as i understand from you i should do an usbtouart chip with nrf side and the arduino to the other side, in this case i'll be to see the communcation from both sides.