ST87M01 - Dual Stack wM-Bus + NB-IOT?

[JuanMarGo]

I'm trying to develop a multiprotocol board with Dual Stack wM-Bus + NB-IOT. I found this link:

https://www.st.com/en/wireless-connectivity/nb-iot-products.html

 

So the ST87M01 module is capable of it.

 

I have the next questions:

1) The module is sold with the firmware (dual stack) flashed ?

2) The module need extra hardware? It is a noise filter or something, or it just need a STM32L5 as a host?

3) Where can I find documentation about how to control the ST87M01 module from the host? An AT command list or something.

 

Thanks!

[Andrew Neil]

Have you checked

https://www.st.com/en/wireless-connectivity/st87m01.html#documentation

https://www.st.com/en/wireless-connectivity/st87m01.html#tools-software

 

[JuanMarGo]

I read every document and didn't find nothing about question 1) and 2). 

 

About the 3) question Section 1.2 "Reference documents" on page 2 of the manual lists "ST87MXX_UM_AT commands description" as document number (2). This indicates that a separate document exists which describes the AT commands for the ST87M01 module family, BUT I can't find it.

[Peter BENSCH]

@JuanMarGo On the overview page it is expressed somewhat ambiguously: ‘suitable for multi-protocol such as wM-Bus as fallback solution’ means that it can be used INSTEAD of wM-Bus if necessary. It therefore does not contain a wM-Bus stack. [wrong statement, see the accepted answer]

Otherwise, all public information can be found on the product's website. For more detailed and additional documents, please contact your local distributor or the local office of STMicroelectronics.

Hope that helps?

Regards
/Peter

[JuanMarGo]

Resuming, the chip has not dual stack inside.

[Peter BENSCH]

Correct, there is no dual stack built-in.

As I found out after talking to the marketing department, my previous answer was wrong: there is indeed a wM-Bus stack in parallel to the NB-IoT stack, but it is only available as a fallback solution (e.g. if the NB-IoT connection fails in the basement of a building). Details can be found in the press release from @GianlucaT  above.

Regards
/Peter

[Yoda]

Hi Juan, your question is very interesting. Let me close the loop with you in a separate email to check how to best support your application specific case. Kind regards,