STM32WLE5 is gives error MAC TxTimeOut when trying to connect with Gateway

[Omkar_123]

Hi,

We had right the code for NUCLEO-WL55JC1 which is perfectly run. NUCLEO-WL55JC1 is connected with Gateway and send the data successfully to the Gateway according to code. But when we load the same program in our customised board the MCU is not connected with the Gateway even we put the MCU in continuous data sending mode. 

In above image we display the response of NUCLEO-WL55JC1 on left side while our customised board on right side. We can see that NUCLEO-WL55JC1 dev board is connected in first attempt while our customised board is trying multiple times even though it is not able to connect with Gateway.

Is there any thing in hardware or software specific which we missed compared to NUCLEO-WL55JC1 Dev Board ?
We did all required connector for MCU, supply voltage is 3.3V and 868MHz antenna is connected.
I am attached here the code for ready reference.

Please suggest what we missed out and where.

[STTwo-32 · Accepted solution]

Hello @Omkar_123 

Are you aware that the STM32WL55 NUCLEO Borad is based on a dual core MCU (cortex M0+ and M4). But the MCU that you are using on your design is a single core (cortex M4).

I think you should have a look at the differnce between your implemtation and the one on some modules that are based on an STM32WLE5 (Such as the Lora-E5 module from one of our third-parties).

Best Regards.

STTwo-32