• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 51 subscribers
  • Views 763 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Increasing sensor sampling frequency

Tamás Bondár
Prodigy 180 points
Other Parts Discussed in Thread: CC2650, CC2650STK

Dear All,

I use the new SensorTag (based on CC2650) for a project and I need to increase the sensor data rate beyond the 10 samples per second limit. Looking at the source code it seems that the update frequency is limited by SENSOR_MIN_UPDATE_PERIOD in st_util.h.

I have the following questions:

- Is SENSOR_MIN_UPDATE_PERIOD the only thing to change to achieve higher sampling rate or some other bits of the code needs to be changed too?

- What is a realistic estimation for highest sampling frequency? (I´m interested in acceleration values.)

- What is the potential bottleneck? Is it the the load on the CC2650 or the radio interface or something else?

I would appreciate any hints or experience shared related to this.

Thanks,

-Tamás

  • 0
    TI__Guru** 105180 points
    Hello Tamás,

    Please see this thread: e2e.ti.com/.../418650
    Also, you can find other results by searching E2E with "cc2650stk sampling".

    We are looking into issues where some sensors brown out at high / performance sampling, but in general, the smartphone is most likely going to be your bottleneck.

    Best wishes