wiFi Fine Timing Measurement (FTM) IEEE 802.11mc WIFI

[MK..1]

Hi

Does ST have any WIFI chip with FTM?

Thanks

[Peter BENSCH]

No, ST does not offer Wi‑Fi FTM. But if you outline your use case, an alternative solution within the ST portfolio might be possible.

Regards
/Peter

[MK..1]

Hi

what I need to do is to synchronise 2 devices over WIFI.

I need a 32 bit timer on stm32 which runs with less than 50 microsencond accuracy in comparison to a second device which also has a STM32.

One device may be configured as client and the other device as router or server.
Does the ST framework give me access to : (TSF) Timing Synchronization Function of 802.11?

See here:

https://en.wikipedia.org/wiki/Timing_synchronization_function

 

 

[Andrew Neil]

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@MK..1 wrote:

less than 50 microsencond accuracy (sic?) in comparison to a second device

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You mean less than 50 us error ?

 

But, as @Peter BENSCH said, you still haven't said why you (think you) need this ?

ie, what is your end goal here? What are you trying to achieve ?

 

Describe the goal, not the step.

[MK..1]

Hi  @Peter BENSCH 

any news here?

Do you know: Does the ST framework give me access to : (TSF) Timing Synchronization Function of 802.11?

Thx

[MK..1]

Hi @Andrew Neil 

thanks. 

On my STM32 device I want to make a ADC measurement. 

I don't have one device but 10 (or lets say n) devies. All these 10 (or n) embedded Devices are connected via WIFI. 

I want all these 10 devices to initiate the ADC conversion at the same time (+/- 50 us accuracy). 

For this purpose I want synchronise all devices with an accuracy of ~50 us. 

Did I manage to describe it properly? ;)

[Andrew Neil]

According to this paper, ESP32 supports it:

Fine Time Measurement for the Internet of Things: A Practical Approach Using ESP32

 

[MK..1]

@Andrew Neil ideally i would stay withhin the STM32 world (ESP32 is not from ST?). Is this possible with ST's offerings as well? 

Second Question: Does the ST framework give me access to : (TSF) Timing Synchronization Function of 802.11?

Thx

[Andrew Neil]

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@MK..1 wrote:

ESP32 is not from ST?

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Correct.

 

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@MK..1 wrote:

Second Question:

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Best to keep to 1 question per thread - start a new thread for a separate question ...

[Andrew Neil]

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@MK..1 wrote:

Does ST have any WIFI chip ...

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Currently, ST's only WiFi product is the ST67W611M1  module.

It supports IEEE 802.11b/g/n/ax:

https://www.st.com/en/wireless-connectivity/st67w611m1.html

[MK..1]

By anay chance : do you know if ST67W611M1 provides access to (TSF) Timing Synchronization Function?

[Andrew Neil]

Again, that's a separate question.

But I don't know.