161 lines
4.2 KiB
C
161 lines
4.2 KiB
C
/* sensor_bmm150.h - header file for BMM150 Geomagnetic sensor driver */
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/*
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* Copyright (c) 2017 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_DRIVERS_SENSOR_BMM150_BMM150_H_
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#define ZEPHYR_DRIVERS_SENSOR_BMM150_BMM150_H_
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#include <zephyr/types.h>
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#include <i2c.h>
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#include <stdint.h>
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#include <misc/util.h>
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#include <kernel.h>
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#include <device.h>
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#include <sensor.h>
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#include <misc/byteorder.h>
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#include <misc/__assert.h>
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#include <gpio.h>
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#define BMM150_REG_CHIP_ID 0x40
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#define BMM150_CHIP_ID_VAL 0x32
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#define BMM150_REG_X_L 0x42
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#define BMM150_REG_X_M 0x43
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#define BMM150_REG_Y_L 0x44
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#define BMM150_REG_Y_M 0x45
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#define BMM150_SHIFT_XY_L 3
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#define BMM150_REG_Z_L 0x46
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#define BMM150_REG_Z_M 0x47
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#define BMM150_SHIFT_Z_L 1
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#define BMM150_REG_RHALL_L 0x48
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#define BMM150_REG_RHALL_M 0x49
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#define BMM150_SHIFT_RHALL_L 2
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#define BMM150_REG_INT_STATUS 0x4A
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#define BMM150_REG_POWER 0x4B
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#define BMM150_MASK_POWER_CTL BIT(0)
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#define BMM150_REG_OPMODE_ODR 0x4C
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#define BMM150_MASK_OPMODE (BIT(2) | BIT(1))
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#define BMM150_SHIFT_OPMODE 1
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#define BMM150_MODE_NORMAL 0x00
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#define BMM150_MODE_FORCED 0x01
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#define BMM150_MODE_SLEEP 0x03
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#define BMM150_MASK_ODR (BIT(5) | BIT(4) | BIT(3))
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#define BMM150_SHIFT_ODR 3
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#define BMM150_REG_LOW_THRESH 0x4F
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#define BMM150_REG_HIGH_THRESH 0x50
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#define BMM150_REG_REP_XY 0x51
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#define BMM150_REG_REP_Z 0x52
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#define BMM150_REG_REP_DATAMASK 0xFF
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#define BMM150_REG_TRIM_START 0x5D
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#define BMM150_REG_TRIM_END 0x71
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#define BMM150_XY_OVERFLOW_VAL -4096
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#define BMM150_Z_OVERFLOW_VAL -16384
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#define BMM150_REGVAL_TO_REPXY(regval) (((regval) * 2) + 1)
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#define BMM150_REGVAL_TO_REPZ(regval) ((regval) + 1)
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#define BMM150_REPXY_TO_REGVAL(rep) (((rep) - 1) / 2)
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#define BMM150_REPZ_TO_REGVAL(rep) ((rep) - 1)
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#define BMM150_REG_INT 0x4D
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#define BMM150_REG_INT_DRDY 0x4E
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#define BMM150_MASK_DRDY_EN BIT(7)
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#define BMM150_SHIFT_DRDY_EN 7
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#define BMM150_DRDY_INT3 BIT(6)
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#define BMM150_MASK_DRDY_Z_EN BIT(5)
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#define BMM150_MASK_DRDY_Y_EN BIT(4)
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#define BMM150_MASK_DRDY_X_EN BIT(3)
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#define BMM150_MASK_DRDY_DR_POLARITY BIT(2)
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#define BMM150_SHIFT_DRDY_DR_POLARITY 2
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#define BMM150_MASK_DRDY_LATCHING BIT(1)
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#define BMM150_MASK_DRDY_INT3_POLARITY BIT(0)
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#define BMM150_I2C_ADDR CONFIG_BMM150_I2C_ADDR
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#if defined(CONFIG_BMM150_SAMPLING_REP_XY) || \
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defined(CONFIG_BMM150_SAMPLING_REP_Z)
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#define BMM150_SET_ATTR_REP
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#endif
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#if defined(CONFIG_BMM150_SAMPLING_RATE_RUNTIME) || \
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defined(BMM150_MAGN_SET_ATTR_REP)
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#define BMM150_MAGN_SET_ATTR
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#endif
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struct bmm150_config {
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char *i2c_master_dev_name;
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u16_t i2c_slave_addr;
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};
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struct bmm150_trim_regs {
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s8_t x1;
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s8_t y1;
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u16_t reserved1;
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u8_t reserved2;
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s16_t z4;
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s8_t x2;
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s8_t y2;
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u16_t reserved3;
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s16_t z2;
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u16_t z1;
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u16_t xyz1;
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s16_t z3;
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s8_t xy2;
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u8_t xy1;
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} __packed;
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struct bmm150_data {
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struct device *i2c;
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struct k_sem sem;
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struct bmm150_trim_regs tregs;
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int rep_xy, rep_z, odr, max_odr;
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int sample_x, sample_y, sample_z;
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};
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enum bmm150_power_modes {
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BMM150_POWER_MODE_SUSPEND,
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BMM150_POWER_MODE_SLEEP,
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BMM150_POWER_MODE_NORMAL
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};
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enum bmm150_axis {
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BMM150_AXIS_X,
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BMM150_AXIS_Y,
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BMM150_AXIS_Z,
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BMM150_RHALL,
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BMM150_AXIS_XYZ_MAX = BMM150_RHALL,
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BMM150_AXIS_XYZR_MAX
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};
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enum bmm150_presets {
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BMM150_LOW_POWER_PRESET,
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BMM150_REGULAR_PRESET,
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BMM150_ENHANCED_REGULAR_PRESET,
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BMM150_HIGH_ACCURACY_PRESET
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};
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#if defined(CONFIG_BMM150_PRESET_LOW_POWER)
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#define BMM150_DEFAULT_PRESET BMM150LOW_POWER_PRESET
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#elif defined(CONFIG_BMM150_PRESET_REGULAR)
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#define BMM150_DEFAULT_PRESET BMM150_REGULAR_PRESET
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#elif defined(CONFIG_BMM150_PRESET_ENHANCED_REGULAR)
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#define BMM150_DEFAULT_PRESET BMM150_ENHANCED_REGULAR_PRESET
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#elif defined(CONFIG_BMM150_PRESET_HIGH_ACCURACY)
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#define BMM150_DEFAULT_PRESET BMM150_HIGH_ACCURACY_PRESET
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#endif
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#endif /* __SENSOR_BMM150_H__ */
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