BHI360 acceleration data

[Newguy]

Hello, I am currently attempting to extract data from the accelerometer. The raw data shows this and I cannot find scaling factors from datasheet Table 93. Is there a way to change acceleration to m^2/s?

[BSTRobin · Accepted solution]

Hi Newguy,

As you accel used 8G range, you can call this function lsb_to_mps2(data.x, 8, 16) to get m^2/s value.

/*!
* @brief This function converts lsb to meter per second squared for 16 bit accelerometer at
* range 2G, 4G, 8G or 16G.
*/
static float lsb_to_mps2(int16_t val, float g_range, uint8_t bit_width)
{
float half_scale = ((float)(1 << bit_width) / 2.0f);

return (GRAVITY_EARTH * val * g_range) / half_scale;
}

[Newguy]

It's working for me, sorry for the late reply. 

Thanks a lot.

[BSTRobin]

Welcome, Newguy.

[Newguy]

Additionally, can you explain to be what is the difference between wake-up acceleration and acceleration?

I am using linear acceleration in order to remove the gravity component, is this a good idea?