Posted on January 14, 2014 at 11:04Hi,
I would like to know : how did you calculate the L3GD20 sensitivity (LSB/dps) in the example?
#define L3G_Sensitivity_250dps (float)114.285f /*!< gyroscope sensitivity with 250 dps full scale [LSB/dps] */
#define L3G_Sensitivity_500dps (float)57.1429f /*!< gyroscope sensitivity with 500 dps full scale [LSB/dps] */
#define L3G_Sensitivity_2000dps (float)14.285f /*!< gyroscope sensitivity with 2000 dps full scale [LSB/dps] */
What does the ''f'' mean ? Because I tried to calculate these values and I found : 262.144 LSB/dps for a 250 dps full scale, 131.072 LSB/dps for a 500 dps full scale and 32.768 LSB/dps for a 2000 dps full scale. The 16 bit output data is expressed as two's complement so : Sensitivity (LSB/dps) = 2^16 (bit) / FullScale(dps).
Thank you in advance for your time.
Kind regards,
Romain
