diff options
Diffstat (limited to 'driver/mag_lis2mdl.h')
| -rw-r--r-- | driver/mag_lis2mdl.h | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/driver/mag_lis2mdl.h b/driver/mag_lis2mdl.h index 13e1b422e4..9d1941de6a 100644 --- a/driver/mag_lis2mdl.h +++ b/driver/mag_lis2mdl.h @@ -8,11 +8,20 @@ #ifndef __CROS_EC_MAG_LIS2MDL_H #define __CROS_EC_MAG_LIS2MDL_H +#include "accelgyro.h" +#include "mag_cal.h" +#include "stm_mems_common.h" + #define LIS2MDL_I2C_ADDR(__x) (__x << 1) +/* + * 7-bit address is 0011110Xb. Where 'X' is determined + * by the voltage on the ADDR pin + */ #define LIS2MDL_ADDR0 LIS2MDL_I2C_ADDR(0x1e) #define LIS2MDL_ADDR1 LIS2MDL_I2C_ADDR(0x1f) +/* Registers */ #define LIS2MDL_WHO_AM_I_REG 0x4f #define LIS2MDL_WHO_AM_I 0x40 @@ -24,15 +33,36 @@ #define LIS2MDL_STATUS_REG 0x67 #define LIS2MDL_OUT_REG 0x68 -#define LIS2MDL_RANGE 4915 -#define LIS2MDL_RESOLUTION 16 +#define LIS2DSL_RESOLUTION 16 +/* + * Maximum sensor data range (milligauss): + * Spec is 1.5 mguass / LSB, so 0.15 uT / LSB. + * Calibration code is set to 16LSB/ut, [0.0625 uT/LSB] + * Apply a multiplier to change the unit + */ +#define LIS2MDL_RATIO(_in) (((_in) * 24) / 10) + + +struct lis2mdl_private_data { + /* lsm6dsm_data union requires cal be first element */ + struct mag_cal_t cal; +#ifdef CONFIG_MAG_BMI160_LIS2MDL + intv3_t hn; /* last sample for offset compensation */ + int hn_valid; +#endif +}; + #define LIS2MDL_ODR_MIN_VAL 10000 -#define LIS2MDL_ODR_MAX_VAL 100000 +#define LIS2MDL_ODR_MAX_VAL 50000 #if (CONFIG_EC_MAX_SENSOR_FREQ_MILLIHZ <= LIS2MDL_ODR_MAX_VAL) #error "EC too slow for magnetometer" #endif +void lis2mdl_normalize(const struct motion_sensor_t *s, + intv3_t v, + uint8_t *data); + extern const struct accelgyro_drv lis2mdl_drv; #endif /* __CROS_EC_MAG_LIS2MDL_H */ |