https://github.com/ehsundar/sensortile

a simple intro to get data from ST sensortile (using BLE)
https://github.com/ehsundar/sensortile

Last synced: 5 months ago
JSON representation

a simple intro to get data from ST sensortile (using BLE)

• Host: GitHub
• URL: https://github.com/ehsundar/sensortile
• Owner: ehsundar
• Created: 2017-10-08T20:59:27.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2017-10-08T21:00:17.000Z (over 8 years ago)
• Last Synced: 2025-04-05T08:15:13.221Z (about 1 year ago)
• Size: 1000 Bytes
• Stars: 1
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

          


sensortile




sensortile is a multi-sensor device, giving us many physical data such as acceleration, temprature, etc. you can find out more about sensortile on official website. there is also an example application (android/ios) for recieving and monitoring sensortile data. the android SDK and example app source code are available on github: here!





while trying to use sensortile to catch some physical data (on a platform that's not android) i found out there is no datasheet or GATT table for using sensortile BLE; however there is some standard rules. i will attach a sample python script (uses bluepy) so you will see the raw data.



here is the GATT table:



characteristics:




  

    Feature

    Handle 

    UUID

  

  

    ProximityGesture::Motion Intensity

    0x000d 

    00140000-0001-11e1-ac36-0002a5d5c51b

  

  

    FeatureAcceleration::FeatureGyroscope::FeatureMagnetometer

    0x0010 

    00e00000-0001-11e1-ac36-0002a5d5c51b

  

  

    FeatureAccelerationEvent

    0x0013 

    00000400-0001-11e1-ac36-0002a5d5c51b

  

  

    FeatureMicLevel

    0x0016 

    04000000-0001-11e1-ac36-0002a5d5c51b

  

  

    FeatureMemsSensorFusionCompact

    0x0019 

    00000100-0001-11e1-ac36-0002a5d5c51b

  

  

    FeatureCompass

    0x001c 

    00000040-0001-11e1-ac36-0002a5d5c51b

  

  

    FeatureActivity

    0x001f 

    00000010-0001-11e1-ac36-0002a5d5c51b

  

  

    FeatureCarryPosition

    0x0022 

    00000008-0001-11e1-ac36-0002a5d5c51b

  

   

    FeatureMemsGesture

    0x0025 

    00000002-0001-11e1-ac36-0002a5d5c51b

  

   

    FeatureAudioADPCM

    0x0028 

    08000000-0001-11e1-ac36-0002a5d5c51b

  

   

    FeatureAudioADPCMSync

    0x002b 

    40000000-0001-11e1-ac36-0002a5d5c51b

  



each characteristic contains 3 description. you must write value 0x0100 to first description of each char (this is a standard method). then sensortile will send you data continuously as notification. you could enable multiple notifications at the same time. notifications will arrive as characteristic value. so you can distinguish notifications.





note



for two first chars, data has following patern:

2byte 2byte 2byte ... 2byte

there is some more info about data structure and uuid prefixes at SDK git page




note



each char data has a time stamp at two first bytes, except stream data (audio)







note



audio formatting is ADPCM. you cannot find any library to dicode this format to PCM(WAV) (except a corrupt python lib!). so you have two ways: write decode yourself! or use sox library. 








//end