Getting data via GATT service, several questions

[Simchev38]

Platform your question concerns:

• Android
• iOS
• [ X] Other
• Platform is not relevant for this question

Device:

• Polar OH1
• [X ] Polar Verity Sense
• [X ] Polar H10
• Polar H9
• Other
• Device is not relevant for this question

Description:
Hello

I am trying to retrieve data from H10 and verity sense in a .NET Core software running on windows.

I'm using the "Polar measurement data specification" document here : https://github.com/polarofficial/polar-ble-sdk/blob/master/technical_documentation/Polar_Measurement_Data_Specification.pdf

I can receive "live data" successfully

I have several questions :

• I could not find any information on how , using the GATT service, I could :
  - Set the time of the sensors
  - Download "offline" data from memory
  - clear the memory

-I also discovered the "SDK mode", is it possible to enable it via the GATT service ? if yes how ?

-Finally, I understood that only HR and RR data can be recorded and then downloaded from memory ? Did I understand right or is it possible to record and then download ACC, GYRO, MAGN data ?

Thanks in advance for your answers

[JOikarinen]

Hi @Simchev38, good questions. Let me try answer.

First I must say the traditional disclaimer: Unfortunately, we are only able to support Android and iOS. The SDK includes source code and you can feel free to utilize / port the code in other platforms too but that is something we are not able to provide support for.

• I could not find any information on how , using the GATT service, I could :
  • Set the time of the sensors
  • Download "offline" data from memory
  • clear the memory

That is because only the Polar measurement data (PMD) service is documented. And the features you mention are not supported by PMD service.

-I also discovered the "SDK mode", is it possible to enable it via the GATT service ? if yes how ?

Yes, that is possible. You may enable/disable SDK mode by similar commands you start the stream and stop the stream. To enable you sent [0x02, 0x09] and to disable may shall sent [0x02, 0x09] command on "FB005C81-02E7-F387-1CAD-8ACD2D8DF0C8" characteristics.

-Finally, I understood that only HR and RR data can be recorded and then downloaded from memory ? Did I understand right or is it possible to record and then download ACC, GYRO, MAGN data ?

Only the HR and RR data can be recorded and the downloaded. ACC, GYRO and MAGN recording is not supported by the devices.

[Simchev38]

Hello

Thanks for your answers.

[JOikarinen]

@Simchev38 I am closing this question for now, but don't hesitate open more questions.