Streaming sensor fusion data from 2 devices and getting different sampling frequencies

Comments

• Eric

  January 2018

  Sensor fusion frequency is fixed based on the mode.

  https://mbientlab.com/iosdocs/latest/sensor_fusion.html#corrected-sensor-readings
  

  
  

  You will also need to modify the connection parameters if you want to stream sensor fusion from 2 devices:

  https://mbientlab.com/iosdocs/latest/settings.html#connection-parameters
  

  
  

  Reducing max connection interval to 7.5ms should suffice.
• tmalik

  January 2018 edited January 2018

  Thanks Eric ! 

  (Think you meant **min** connection interval = 7.5. Also , the connection intervals are integers - so set it to 8 ms)

  
  

  
  
• Eric

  January 2018

  No, i mean max connection interval.
• tmalik

  January 2018 edited January 2018

  ok...so this, (Min > Max ?)

  
  

  device.settings?.minimumConnectionInterval = 10

  device.settings?.maximumConnectionInterval = 8

  
  

  OR...

  
  

  device.settings?.minimumConnectionInterval = 8

  device.settings?.maximumConnectionInterval = 8

  
  
• Eric

  January 2018

  I never said anything about changing the min connection interval, only adjust the max conn interval.
• tmalik

  January 2018

  The link that you sent had the nordic link (https://devzone.nordicsemi.com/question/60/what-is-connection-parameters/ )  which says that the connection interval should be between 7.5ms - 4s. 

  "Determines how often the Central will ask for data from the Peripheral. When the Peripheral requests an update, it supplies a maximum and a minimum wanted interval. The connection interval must be between 7.5 ms and 4 s."
  

  
  

  I read the min. connection interval - it was 6 ms - which did not match the nordic specs... 

  
  

  Anyhow, will leave the min as is and change the max as you recommended. 

  
  

  Thanks!