Hallo everyone
I have obtained the originaldata from BMI270, but these data are not processed. How to convert these data into data with standard units. For example: m/s^2 (accelerometer) and rad/s (gyroscope).
Thank you very much.
How to analyze the data of BMI270
Best reply by BSTRobin
Hello Eason,
There were example code in github.
For accelerometer, you could example file "https://github.com/BoschSensortec/BMI270-Sensor-API/blob/master/examples/bmi270/accel/accel.c".
/*!
* @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;
}
For gyroscope, you could example file "https://github.com/BoschSensortec/BMI270-Sensor-API/blob/master/examples/bmi270/gyro/gyro.c".
/*!
* @brief This function converts lsb to degree per second for 16 bit gyro at
* range 125, 250, 500, 1000 or 2000dps.
*/
static float lsb_to_dps(int16_t val, float dps, uint8_t bit_width)
{
float half_scale = ((float)(1 << bit_width) / 2.0f);
return (dps / ((half_scale) + BMI2_GYR_RANGE_2000)) * (val);
}
1 reply
Resolved