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

KiteLee · ‎2025-04-09

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 · ‎2025-04-09

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

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

KiteLee · ‎2025-04-09

thk's,

That's the MRSUBG in STM32CubeMX.

uart non-SIGFOX must be configured.

STTwo-32 · ‎2025-05-16

Hello @KiteLee

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

Best Regards.

STTwo-32

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