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Issue in interpreting the accelerometer values on Btool

khan comsian
Prodigy 20 points
Other Parts Discussed in Thread: CC2541DK-MINI, BLE-STACK

Hi,

I am trying to read the BMA 250 accelerometer value from CC2541DK-mini keyfob using dongle and Btool application. The three axis (x,y,z) values that i am receiving on the software are in hexa decimal representation. Since the BMA 250 gives accelerometer values in 10 bits  (8MSB + 2LSB), i am confused how to interpret the hexa values in the software, because a hex value only give information about 8 bits, how can i read the remaining 2 bits.

  • 0
    TI__Guru** 105180 points
    Hi khan,

    You can see the source implementation in accReadAcc16 from bma250.c in the BLE-Stack v1.4.2 SDK.

    Best wishes
  • 0 in reply to JXS
    Prodigy 20 points

    Thanks for your reply!

    I have gone through the bma250.c file , but it contains code for both 8 bit and 16 bit output, it therefore is confusing again. Since the output from accelerometer on Btool is 2 hex values (such as 'FA'), i am assuming that these are only the MSB 8 bits values of the accelerometer. Am i right in this assumption?