159 lines
4.9 KiB
C
159 lines
4.9 KiB
C
/*
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* Copyright (c) 2016 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_LIS3MDL_LIS3MDL_H_
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#define ZEPHYR_DRIVERS_SENSOR_LIS3MDL_LIS3MDL_H_
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#include <device.h>
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#include <misc/util.h>
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#include <zephyr/types.h>
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#include <gpio.h>
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#define SYS_LOG_DOMAIN "LIS3MDL"
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#define SYS_LOG_LEVEL CONFIG_SYS_LOG_SENSOR_LEVEL
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#include <logging/sys_log.h>
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#define LIS3MDL_I2C_ADDR_BASE 0x1C
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#define LIS3MDL_I2C_ADDR_MASK (~BIT(1))
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/* guard against invalid CONFIG_I2C_ADDR values */
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#if (CONFIG_LIS3MDL_I2C_ADDR & LIS3MDL_I2C_ADDR_MASK) != LIS3MDL_I2C_ADDR_BASE
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#error "Invalid value for CONFIG_LIS3MDL_I2C_ADDR"
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#endif
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#define LIS3MDL_REG_WHO_AM_I 0x0F
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#define LIS3MDL_CHIP_ID 0x3D
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#define LIS3MDL_REG_CTRL1 0x20
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#define LIS3MDL_TEMP_EN_MASK BIT(7)
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#define LIS3MDL_TEMP_EN_SHIFT 7
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#define LIS3MDL_OM_MASK (BIT(6) | BIT(5))
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#define LIS3MDL_OM_SHIFT 5
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#define LIS3MDL_MAG_DO_MASK (BIT(4) | BIT(3) | BIT(2))
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#define LIS3MDL_DO_SHIFT 2
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#define LIS3MDL_FAST_ODR_MASK BIT(1)
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#define LIS3MDL_FAST_ODR_SHIFT 1
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#define LIS3MDL_ST_MASK BIT(0)
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#define LIS3MDL_ST_SHIFT 0
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#define LIS3MDL_ODR_BITS(om_bits, do_bits, fast_odr) \
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(((om_bits) << LIS3MDL_OM_SHIFT) | \
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((do_bits) << LIS3MDL_DO_SHIFT) | \
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((fast_odr) << LIS3MDL_FAST_ODR_SHIFT))
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#define LIS3MDL_REG_CTRL2 0x21
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#define LIS3MDL_FS_MASK (BIT(6) | BIT(5))
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#define LIS3MDL_FS_SHIFT 5
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#define LIS3MDL_REBOOT_MASK BIT(3)
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#define LIS3MDL_REBOOT_SHIFT 3
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#define LIS3MDL_SOFT_RST_MASK BIT(2)
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#define LIS3MDL_SOFT_RST_SHIFT 2
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#define LIS3MDL_FS_IDX ((CONFIG_LIS3MDL_FS / 4) - 1)
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/* guard against invalid CONFIG_LIS3MDL_FS values */
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#if CONFIG_LIS3MDL_FS % 4 != 0 || LIS3MDL_FS_IDX < -1 || LIS3MDL_FS_IDX >= 4
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#error "Invalid value for CONFIG_LIS3MDL_FS"
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#endif
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#define LIS3MDL_REG_CTRL3 0x22
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#define LIS3MDL_LP_MASK BIT(5)
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#define LIS3MDL_LP_SHIFT 5
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#define LIS3MDL_SIM_MASK BIT(2)
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#define LIS3MDL_SIM_SHIFT 2
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#define LIS3MDL_MD_MASK (BIT(1) | BIT(0))
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#define LIS3MDL_MD_SHIFT 0
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#define LIS3MDL_MD_CONTINUOUS 0
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#define LIS3MDL_MD_SINGLE 1
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#define LIS3MDL_MD_POWER_DOWN 2
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#define LIS3MDL_MD_POWER_DOWN_AUTO 3
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#define LIS3MDL_REG_CTRL4 0x23
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#define LIS3MDL_OMZ_MASK (BIT(3) | BIT(2))
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#define LIS3MDL_OMZ_SHIFT 2
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#define LIS3MDL_BLE_MASK BIT(1)
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#define LIS3MDL_BLE_SHIFT 1
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#define LIS3MDL_REG_CTRL5 0x24
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#define LIS3MDL_FAST_READ_MASK BIT(7)
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#define LIS3MDL_FAST_READ_SHIFT 7
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#define LIS3MDL_BDU_MASK BIT(6)
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#define LIS3MDL_BDU_SHIFT 6
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#define LIS3MDL_BDU_EN (1 << LIS3MDL_BDU_SHIFT)
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#define LIS3MDL_REG_SAMPLE_START 0x28
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#define LIS3MDL_REG_INT_CFG 0x30
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#define LIS3MDL_INT_X_EN BIT(7)
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#define LIS3MDL_INT_Y_EN BIT(6)
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#define LIS3MDL_INT_Z_EN BIT(5)
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#define LIS3MDL_INT_XYZ_EN \
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(LIS3MDL_INT_X_EN | LIS3MDL_INT_Y_EN | LIS3MDL_INT_Z_EN)
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static const char * const lis3mdl_odr_strings[] = {
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"0.625", "1.25", "2.5", "5", "10", "20",
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"40", "80", "155", "300", "560", "1000"
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};
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static const u8_t lis3mdl_odr_bits[] = {
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LIS3MDL_ODR_BITS(0, 0, 0), /* 0.625 Hz */
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LIS3MDL_ODR_BITS(0, 1, 0), /* 1.25 Hz */
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LIS3MDL_ODR_BITS(0, 2, 0), /* 2.5 Hz */
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LIS3MDL_ODR_BITS(0, 3, 0), /* 5 Hz */
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LIS3MDL_ODR_BITS(0, 4, 0), /* 10 Hz */
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LIS3MDL_ODR_BITS(0, 5, 0), /* 20 Hz */
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LIS3MDL_ODR_BITS(0, 6, 0), /* 40 Hz */
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LIS3MDL_ODR_BITS(0, 7, 0), /* 80 Hz */
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LIS3MDL_ODR_BITS(3, 0, 1), /* 155 Hz */
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LIS3MDL_ODR_BITS(2, 0, 1), /* 300 Hz */
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LIS3MDL_ODR_BITS(1, 0, 1), /* 560 Hz */
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LIS3MDL_ODR_BITS(0, 0, 1) /* 1000 Hz */
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};
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static const u16_t lis3mdl_magn_gain[] = {
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6842, 3421, 2281, 1711
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};
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struct lis3mdl_data {
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struct device *i2c;
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s16_t x_sample;
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s16_t y_sample;
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s16_t z_sample;
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s16_t temp_sample;
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#ifdef CONFIG_LIS3MDL_TRIGGER
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struct device *gpio;
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struct gpio_callback gpio_cb;
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struct sensor_trigger data_ready_trigger;
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sensor_trigger_handler_t data_ready_handler;
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#if defined(CONFIG_LIS3MDL_TRIGGER_OWN_THREAD)
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K_THREAD_STACK_MEMBER(thread_stack, CONFIG_LIS3MDL_THREAD_STACK_SIZE);
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struct k_sem gpio_sem;
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struct k_thread thread;
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#elif defined(CONFIG_LIS3MDL_TRIGGER_GLOBAL_THREAD)
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struct k_work work;
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struct device *dev;
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#endif
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#endif /* CONFIG_LIS3MDL_TRIGGER */
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};
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#ifdef CONFIG_LIS3MDL_TRIGGER
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int lis3mdl_trigger_set(struct device *dev,
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const struct sensor_trigger *trig,
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sensor_trigger_handler_t handler);
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int lis3mdl_sample_fetch(struct device *dev, enum sensor_channel chan);
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int lis3mdl_init_interrupt(struct device *dev);
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#endif
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#endif /* __SENSOR_LIS3MDL__ */
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