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      1 /*
      2  * Copyright (C) 2016-2017 STMicroelectronics
      3  *
      4  * Author: Denis Ciocca <denis.ciocca (at) st.com>
      5  *
      6  * Licensed under the Apache License, Version 2.0 (the "License");
      7  * you may not use this file except in compliance with the License.
      8  * You may obtain a copy of the License at
      9  *
     10  *    http://www.apache.org/licenses/LICENSE-2.0
     11  *
     12  * Unless required by applicable law or agreed to in writing, software
     13  * distributed under the License is distributed on an "AS IS" BASIS,
     14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15  * See the License for the specific language governing permissions and
     16  * limitations under the License.
     17  */
     18 
     19 #ifndef __LSM6DSM_I2C_MASTER_AK09916__
     20 #define __LSM6DSM_I2C_MASTER_AK09916__
     21 
     22 #ifdef LSM6DSM_I2C_MASTER_AK09916
     23 #ifndef LSM6DSM_I2C_MASTER_MAGNETOMETER_ENABLED
     24 #define LSM6DSM_I2C_MASTER_MAGNETOMETER_ENABLED         1
     25 #else /* LSM6DSM_I2C_MASTER_MAGNETOMETER_ENABLED */
     26 #error "Another magnetometer is already selected! One magn per time can be used."
     27 #endif /* LSM6DSM_I2C_MASTER_MAGNETOMETER_ENABLED */
     28 #endif /* LSM6DSM_I2C_MASTER_AK09916 */
     29 
     30 #define AK09916_KSCALE                                  0.15          /* MAGN scale in uT/LSB */
     31 #define AK09916_I2C_ADDRESS                             (0x0c)
     32 
     33 /* AK09916 registers */
     34 #define AK09916_WAI_ADDR                                (0x00)
     35 #define AK09916_CNTL2_ADDR                              (0x31)
     36 #define AK09916_CNTL3_ADDR                              (0x32)
     37 #define AK09916_OUTDATA_ADDR                            (0x11)
     38 #define AK09916_STATUS_DATA_ADDR                        (0x18)
     39 
     40 #define AK09916_SW_RESET                                (0x01)
     41 #define AK09916_POWER_ON_VALUE                          (0x00)
     42 #define AK09916_POWER_OFF_VALUE                         (0x00)
     43 #define AK09916_OUTDATA_LEN                             (0x06)
     44 #define AK09916_ENABLE_SELFTEST_MODE                    (0x10)
     45 
     46 /* Selftest related */
     47 #define AK09916_SELFTEST_HIGH_THR_XYZ_LSB               200
     48 #define AK09916_SELFTEST_LOW_THR_XY_LSB                 -200
     49 #define AK09916_SELFTEST_LOW_THR_Z_LSB                  -1000
     50 
     51 
     52 /* AK09916 default base registers status */
     53 /* AK09916_CNTL2_BASE: control register 2 default settings */
     54 #define AK09916_CNTL2_BASE                             ((0 << 7) |    /* (0) */ \
     55                                                         (0 << 6) |    /* (0) */ \
     56                                                         (0 << 5) |    /* (0) */ \
     57                                                         (0 << 4) |    /* MODE4 */ \
     58                                                         (0 << 3) |    /* MODE3 */ \
     59                                                         (0 << 2) |    /* MODE2 */ \
     60                                                         (0 << 1) |    /* MODE1 */ \
     61                                                         (0 << 0))     /* MODE0 */
     62 
     63 #ifdef LSM6DSM_I2C_MASTER_AK09916
     64 /* MUST BE SAME LENGTH OF LSM6DSMMagnRates */
     65 static uint8_t AK09916MagnRatesRegValue[] = {
     66     0x02, /* Expected 0.8125Hz, ODR = 10Hz */
     67     0x02, /* Expected 1.625Hz, ODR = 10Hz */
     68     0x02, /* Expected 3.25Hz, ODR = 10Hz */
     69     0x02, /* Expected 6.5Hz, ODR = 10Hz */
     70     0x04, /* Expected 12.5Hz, ODR = 20Hz */
     71     0x06, /* Expected 26Hz, ODR = 50Hz */
     72     0x08, /* Expected 52Hz, ODR = 100Hz */
     73     0x08, /* Expected 104Hz, ODR = 100Hz */
     74 };
     75 #endif /* LSM6DSM_I2C_MASTER_AK09916 */
     76 
     77 #endif /* __LSM6DSM_I2C_MASTER_AK09916__ */
     78