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tapparelj / gr-lora_sdr

This is the fully-functional GNU Radio software-defined radio (SDR) implementation of a LoRa transceiver with all the necessary receiver components to operate correctly even at very low SNRs. This work has been conducted at the Telecommunication Circuits Laboratory, EPFL.
https://www.epfl.ch/labs/tcl/
GNU General Public License v3.0
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Lora hierarchical blocks #102

Open atambi802 opened 3 months ago

atambi802 commented 3 months ago

Hey!

When I use the lora hierarchical blocks I just don't get any data from it. I am sending lora signals from a rak 2287, and able to listen to in on another rak 2287 without any issues. But when I see it in my bladerf using this, I am not getting any data from the hierarchical blocks. I have tried to see if anything I am doing is vastly different. This is my flow graph: Screenshot from 2024-07-25 10-53-54

This is what I am sending from the rak 2287 (sx1250): Sending 5 LoRa packets on 904100000 Hz (BW 125 kHz, SF 7, CR 1, 0 bytes payload, 8 symbols preamble, explicit header, non-inverted polarity) at 25 dBm

I am using the newest git pull from a few days ago. And I encountered a seg fault, and some other crazy things compared to the last commit on the master branch.

Thanks so much!

tapparelj commented 2 months ago

Hello @atambi802, Sorry for the delay. When you pulled the new version, did you do a make uninstall and make clean before building and installing the new version? If not can you try it? If this doesn't change anything, can you run the flowgraph tx_rx_hier_functionnality_check (in the examples folder) without any segfault? Finally would it be possible to run the flowgraph with gdb (gdb python3 and then run <yourFlowgraph>.py) and after it crash copy the output of the command bt ?