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LCTT Certification with LoRaWAN 1.0.4 Stack - STM32L073RZ


Dear ST Team,

Recently, we undertook a migration of our Firmware from LoRaWAN 1.0.2 to version 1.0.4 using the LoRaWAN stack available on GitHub ([Link to GitHub Repository:]). Here, SX1262 is the LoRa Transceiver and STM32L073RZ as MCU. We have successfully implemented and tested LoRa and LoRaWAN functionality with the new stack.

However, we have encountered challenges during the LCTT (LoRa Alliance Certification Testing and Tooling) certification process. Specifically, only the Device Activation Test is passing, while the others are not, as our End Device is not transitioning into Test mode. This issue persists even when using the STMWL55JC series controller EVK board.

For more details on tests, DUT is able to join the network with LCTT tool and LCTT can send COMPLIANCE_DUT_RESET_REQ command in the Downlink packet. Once the DUT does soft reset and after that DUT is directly starting the periodic messages as it detected itself as already joined to network. And the DUT is no longer in test mode. Due to which the other test like DUT pre-condition settings, Downlink sequence counter tests are all failing.

We appreciate your prompt attention to this matter and look forward to the opportunity to benefit from your expertise.




US915 Band is used for Testing.

ST Employee

Hello @saikrishna and welcome to the ST Community 😊.

Sorry for our late replay. For such a purpose, it will be a good idea to contact the Our local sales office for more details about the LCTT.

Best Rgards.


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