How do stm32wl33 CPU and the sub-1GHz wireless (Radio) communicate?

[KiteLee]

SPI or serial port?

If it weren't for those two, Then why must the MCU_API_delay() function be set while ((LL_USART_IsActiveFlag_TXE_TXFNF(USART1) == RESET) || (LL_USART_IsActiveFlag_TC(USART1)) == RESET)) {};

We can use both uart of MCU, so I want to confirm with you whether it is necessary to configure here.

[Andrew Neil · Accepted solution]

See the datasheet - they communicate via the Bus Matrix:

https://www.st.com/resource/en/datasheet/stm32wl33k8.pdf#page=6

via https://www.st.com/en/microcontrollers-microprocessors/stm32wl33k8.html#documentation

[KiteLee]

thk's,

That's the MRSUBG in STM32CubeMX.

uart non-SIGFOX must be configured.

[STTwo-32]

Hello @KiteLee 

Could you specify the exact question you are asking? Is it about the Radio or the Sigfox?

Best Regards.

STTwo-32 

[KiteLee]

sigfox

[Andrew Neil]

Still no idea what your actual question is now!

Has your original question, "How do stm32wl33 CPU and the sub-1GHz wireless (Radio) communicate?" been answered?

If so, please mark the solution. Then you can start a new thread for a new question.

If not, please explain clearly what you're missing.

[STTwo-32]

If the original post is answered @KiteLee, could you please select @Andrew Neil's comment as Solution.

Best Regards.

STTwo-32