Does the STM32WLEx have the SX126 built in? I have a LoRa-E5 module, and wondered what the difference is. Many Thanks Scott

[Peter BENSCH]

The STM32WLE contains a licensed IP from Semtech, but no SX126x. The reference manual RM0453 RM0461 (see below) lists all the features of the contained LoRa® part.

Regards

/Peter

[Tesla DeLorean]

The implementation is done on a single die, rather than a stacked die using a discreet SX126x.

The connection is via an internally routed SPI.

The register set/programming for LoRa should be materially the same as for an SX1262​

[Strooom]

Hello @Peter BENSCH​  I think the reference manual for the STM32WLE is RM0461.

The RM0453 you mention is for the SMT32WL family.

[Peter BENSCH]

Thank you for pointing that out, I had actually mixed it up by mistake. Yes, RM0461 is the correct reference manual for the STM32WLE.

Regards

/Peter

[Tesla DeLorean]

The linked document indicates it was from Jan 2023, so is going to be different to the one Peter posted originally in Feb 2022

I would agree with that this March 2023 document for the STM32WLEx is currently more appropriate.

https://www.st.com/resource/en/reference_manual/rm0461-stm32wlex-advanced-armbased-32bit-mcus-with-subghz-radio-solution-stmicroelectronics.pdf

Document still does state which Semtech IP it is modelled after.

[Strooom]

You are welcome. If you have experience with the STM32WLE, please take a look at my problem STM32WLE5 'Failure To Execute Command' - I read the reference manual and search the forum, but I can't find an answer to this..