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Add Semtech SX1272 support. Add basic LoRaWAN node and gateway support #194

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Add Semtech SX1272 support. Add basic LoRaWAN node and gateway support #194

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andresmanelli
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Content

  • Arch definitions for Semtech's SX1272/3 PHY
  • "high" level APIs to access the variables (some of them distributed across register boundaries)
  • protocol.lora definitions
  • protocol.semtech_udp_forwarder (used in LoRaWAN gateway)
  • radio-sx1272 applet, that sends / receives packages using LoRa modulation, PHY to PHY
  • radio-lora applet, that provides node and gateway functionality for LoRaWAN protocol.

Raw PHY Tx can and LoRaWAN node is connected to a socket for data transmission.

I tested both use cases with two Glasgow boards, and a TheThingsNetwork application with good results.

What is implemented in LoRaWAN

  • Network join via OTAA (Session keys computed and stored)
  • Message encryption / decryption per specification
  • Receive windows, with different RF parameters
  • DLsettings.RX2DataRate use for configuring the proper RF parameters in 2nd receive window

Caveats

  • Somehow the gateway receive socket takes more and more time to get the downlink packet, and I couldn't figure out why..

TODO

There is plenty TODO on the RF regions, MAC commands, Frequency hopping, ... but I won't do that in the near future so I though of submitting this PR as-is (functional, but somehow incomplete in a specification point of view)

Let me know the required changes to meet the project style/guidelines. I tried to follow other applets/arch code style.

Thanks!

@andresmanelli
arch.sx1272: Add Semtech SX1272 register definitions and higher level…
46d11eb 
… APIs

protocol.lora: Add LoRa and LoRaWAN protocol definitions, node and
gateway classes.
protocol.semtech_udp_forwarder: Add Semtech UDP forwarder protocol
applet.radio.sx1272: Add support for Semtech SX1272 PHY
@andresmanelli
Remove useless APIs
f597dca
@andresmanelli andresmanelli mentioned this pull request May 11, 2020
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@whitequark
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Thanks for the PR! At a very quick glance, code looks reasonable. I'm currently very busy with nMigen, so it will take a significant amount of time for me to properly review and merge your PR.

Base automatically changed from master to main February 27, 2021 09:59
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@andresmanelli @whitequark