ST87M01

[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

[Andrew Neil]

---

@Peter BENSCH wrote:

On the overview page it is expressed somewhat ambiguously

---

Hmmm ... yes it is:

I think that's rather misleading.

I guess what they meant was, "can be used in conjunction with an wM-Bus device to provide an NB-IoT fallback" ?

Any chance to get this corrected?

[JuanMarGo]

Resuming, the chip has not dual stack inside.

[Peter BENSCH · Accepted solution]

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

[Peter BENSCH]

@Andrew Neil Of course, there is always a chance. Let's see how quickly the web team responds.

@Lina_DABASINSKAITE Could you please pass on Andrew's suggestion?

[Lina_DABASINSKAITE]

Hi there,

Thanks for brining this up, @Andrew Neil  and @Peter BENSCH . I shared with a responsible team for a review. 

Regards,

Lina

[GianlucaT]

Hi Andrew,

The ST87M01, as announced through this PR (https://newsroom.st.com/media-center/press-item.html/n4651.html), is a NB-IoT module which gives the customer the chance to use - in the same module - the wM-Bus firmware as fallback option (not as priority). Everything is in the same module, as highlighted in the above sentence.