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rpp0 / gr-lora

GNU Radio blocks for receiving LoRa modulated radio messages using SDR
GNU General Public License v3.0
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gr-lora header decode problem #170

Open wengjiahuang0529 opened 10 months ago

wengjiahuang0529 commented 10 months ago

image According this picture , the lora packet header size is 2.5 bytes. However , I use gr-lora to decode and get the results :

19 91 50 ff ff ff ff 1a 28 e2 30 64 b7 77 0e 03 0a ff ff 08 21 12 05 68 69 20 30 35 14 9c ((0dw!hi 05)

I'm pretty sure the first three bytes of this result are the header, and the remaining bytes are the payload, but the header size doesn't match the 2.5 bytes of the picture.

I noticed that the lower nibble of the third byte always seems to be 0， I would like to know if this 0 is the actual transmitted content or a result added by gr-lora.

Thank you.