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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_LSM303AGR__
     20 #define __LSM6DSM_I2C_MASTER_LSM303AGR__
     21 
     22 #ifdef LSM6DSM_I2C_MASTER_LSM303AGR
     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_LSM303AGR */
     29 
     30 #define LSM303AGR_KSCALE                                0.15f         /* MAGN scale in uT/LSB */
     31 #define LSM303AGR_I2C_ADDRESS                           (0x1e)
     32 
     33 /* LSM303AGR registers */
     34 #define LSM303AGR_WAI_ADDR                              (0x4f)
     35 #define LSM303AGR_CFG_REG_A_M_ADDR                      (0x60)
     36 #define LSM303AGR_CFG_REG_B_M_ADDR                      (0x61)
     37 #define LSM303AGR_CFG_REG_C_M_ADDR                      (0x62)
     38 #define LSM303AGR_OUTDATA_ADDR                          (0x68)
     39 
     40 #define LSM303AGR_SW_RESET                              (0x20)
     41 #define LSM303AGR_POWER_ON_VALUE                        (0x00)
     42 #define LSM303AGR_POWER_OFF_VALUE                       (0x03)
     43 #define LSM303AGR_OUTDATA_LEN                           (0x06)
     44 #define LSM303AGR_OFFSET_CANCELLATION                   (0x02)
     45 #define LSM303AGR_ENABLE_SELFTEST                       (0x02)
     46 
     47 /* Selftest related */
     48 #define LSM303AGR_SELFTEST_HIGH_THR_LSB                 333
     49 #define LSM303AGR_SELFTEST_LOW_THR_LSB                  10
     50 
     51 
     52 /* LSM303AGR default base registers status */
     53 /* LSM303AGR_CFG_REG_A_M_BASE: configuration register 1 default settings */
     54 #define LSM303AGR_CFG_REG_A_M_BASE                     ((1 << 7) |    /* COMP_TEMP_EN */ \
     55                                                         (0 << 6) |    /* REBOOT */ \
     56                                                         (0 << 5) |    /* SOFT_RST */ \
     57                                                         (0 << 4) |    /* LP */ \
     58                                                         (0 << 3) |    /* ODR1 */ \
     59                                                         (0 << 2) |    /* ODR0 */ \
     60                                                         (0 << 1) |    /* MD1 */ \
     61                                                         (0 << 0))     /* MD0 */
     62 
     63 /* LSM303AGR_CFC_REG_C_M_BASE: configuration register 3 default settings */
     64 #define LSM303AGR_CFG_REG_C_M_BASE                     ((0 << 7) |    /* (0) */ \
     65                                                         (0 << 6) |    /* INT_MAG_PIN */ \
     66                                                         (0 << 5) |    /* I2C_DIS */ \
     67                                                         (1 << 4) |    /* BDU */ \
     68                                                         (0 << 3) |    /* BLE */ \
     69                                                         (0 << 2) |    /* (0) */ \
     70                                                         (0 << 1) |    /* SELFT_TEST */ \
     71                                                         (0 << 0))     /* INT_MAG */
     72 
     73 #ifdef LSM6DSM_I2C_MASTER_LSM303AGR
     74 /* MUST BE SAME LENGTH OF LSM6DSMMagnRates */
     75 static uint8_t LSM303AGRMagnRatesRegValue[] = {
     76     0x00, /* Expected 0.8125Hz, ODR = 10Hz */
     77     0x00, /* Expected 1.625Hz, ODR = 10Hz */
     78     0x00, /* Expected 3.25Hz, ODR = 10Hz */
     79     0x00, /* Expected 6.5Hz, ODR = 10Hz */
     80     0x04, /* Expected 12.5Hz, ODR = 20Hz */
     81     0x0c, /* Expected 26Hz, ODR = 100Hz */
     82     0x0c, /* Expected 52Hz, ODR = 100Hz */
     83     0x0c, /* Expected 104Hz, ODR = 100Hz */
     84 };
     85 #endif /* LSM6DSM_I2C_MASTER_LSM303AGR */
     86 
     87 #endif /* __LSM6DSM_I2C_MASTER_LSM303AGR__ */
     88