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Visitor II
Aug 4, 2023 4:46 AM UTC
Question

Class C downlink not working in STM32WL55JC2.

  1. My STM32WL55JC2 is programmed with the example code for Lora End Node given in the SDK v1.3.0.
  2. Class_A is enabled by default and working properly i.e. receive window of the MCU opens only after the periodic uplink.
  3. When the class is set to Class_C in the LmHandlerConfigure(&LmHandlerParams) function, it still functions like a Class_A device.
  4. I also tried to change the class later in the join request, but that was also unsuccessful.

Any suggestions?

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3 replies

IIRHO.1
ST Employee
Aug 4, 2023 6:48 AM UTC

Hello @RonNad14 and welcome to ST Community.

I suggest you to take a look at the application notes AN5481, AN5406 and AN5554. You will find what you need to solve your Class C problem.

Best Regards.

Issam

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Associate
Mar 7, 2024 1:11 PM UTC

Dear @IIRHO.1  and @RonNad14 ,

 

I am facing the same issue as the @RonNad14 . Even though I have changed default LoRa class into 'class C', STM32WL55JC1 still behaves as the 'class A' device.

I tried to change class of the device from the Termite, but didn't have any success.

Has anybody found the solution for this problem?

 

Thank you in advance! 

Visitor II
Jul 16, 2024 5:56 PM UTC

Hi @RonNad14,

I am also facing the same issue with STM32WLE5CCU6 controller.

Anyone please rectify this problem. 

Thank you.