5 years, 8 months ago.

Help for the transmission of data between two cards

Hello everyone !

The goal of my project is to transmit the data of a temperature sensor (HTU21D) connected to a DISCO-L072CZ-LRWAN1 board to another DISCO-L072CZ-LRWAN1 board via the antennas. I have already "done" the data recovery code of the temperature sensor.

However, even taking the example on the Ping Pong code, I can not achieve communication between the two cards. Indeed, additional constraint, the "reception card" must only be able to read the data coming from the "temperature card" and not from another card. So, the reception card must filter the responses to keep only that of the temperature card.

Attention, the "temperature card" only emits and the "reception card" only receives.

So I have trouble transmitting the temperature sensor data with the "emission card" and I don't know how to code the "reception card" with the data filtering ... In theory, I know how to do it, but in practice I have a lot of difficulties doing it.

Can someone help me please? Thank you so much.