You should copy config_example.h to config.h
and edit it with the MAC addresses of both SHALOM
and SALAM
talismettas.
In order to figure out the address, upload the code to the talismetta, then you can see the MAC address by openning the serial monitor to it at 115200 baud. You should see something like
=== Talis-Metta ===
My MAC: BB:AA:DD:AA:55:55
Copy this to the SALAM
or SHALOM
definition at config.h