I am working on a project about LoRa expansion board, I have an stm32l053 Nucleo and an I-NUCLEO-LRWAN1 with a sx1272 transceiver.
I am trying to compile the PING PONG project from STM32CubeExpansion_LRWAN_V1.1.5, but each time there is RX_TIMEOUT that appears on the terminal (termite or terra term or even Putty). And we have no communication between our 2 modules. We tried do make some modifications, such as those shown in the link below:
We also tried to run the code and verify that there is a transmission with a spectrum analyzer, but nothing appeared.
We were trying to understand the functioning of the ping-pong example to understand how the transmission with LoRa Module works. Because our target is to enable communication between 2 LoRa module, one as a master (its mission will be to collect the data of the different sensors and transmit it,) and the other one as a slave (its mission is to receive the data of the master and then transmit it with Uart to the PC).
If you may want help us to find a solution to our problem.