nordic thingy:52 iot sensor kit

[Cavitcem]

Hi! I am using Nordic Thingy : 52 Iot Sensor Kit. I have Windows x64 computer. I connected the sensor's bluetooth (nrf52832) to the HM-10 bluetooth module. I want to transfer the temperature data from the sensor to STM32F407 Discovery via bluetooth. But, I can't transfer data from sensor to Hm-10.  What should I send to the sensor to start the data flow ? I would be glad if you could inform me about this subject.

[ovrebekk]

Hi

Have you read over the service description in the Thingy documentation?

It describes the various services exposed by the Thingy device, and how to use the various characteristics in those services. 

Temperature is accessible through the environment service. 

Best regards
Torbjørn

[Cavitcem]

Yes, I have read. But, I can not transfer data from nordic thingy:52 iot sensor kit to HM-10 bluetooth module. 
I would be glad if you told me what to do.

[ovrebekk]

Hi

I can't really tell you how to use the HM-10, other than explain in general terms which services and characteristics to access as described in the Thingy documentation. 

After establishing a connection there should be a service discovery phase, where the Bluetooth GATT client in the HM-10 will have to discover the services in the Thingy. 

The environment service has UUID EF680200-9B35-4933-9B10-52FFA9740042, and the temperature characteristic within this service has UUID EF680201-9B35-4933-9B10-52FFA9740042. The base UUID for all the Thingy services and characteristics is the same, while the 16-bit 'alias' is different. 

All you have to do to have the Thingy send temperature updates automatically is to enable notifications on the temperature characteristic. I don't know how you enable notifications on the HM-10, but you should be able to do this by referring either to the UUID of the characteristic, or by referring to the handle of the characteristic which is assigned during service discovery. 

Enabling notifications on a characteristic is equivalent to writing to the CCCD descriptor of the characteristic. Please let me know if you are unable to figure out how to do this on the HM-10, but this is something their support/forum should have information about. 

Best regards
Torbjørn

[Cavitcem]

I solved the problem.

Thank you for your help.

[ovrebekk]

That's good to hear. Best of luck with your project