130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __SENSOR_LIS3DH_H__
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#define __SENSOR_LIS3DH_H__
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#include <device.h>
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#include <misc/util.h>
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#include <stdint.h>
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#include <gpio.h>
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#define LIS3DH_I2C_ADDRESS CONFIG_LIS3DH_I2C_ADDR
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#define LIS3DH_AUTOINCREMENT_ADDR BIT(7)
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#define LIS3DH_REG_CTRL1 0x20
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#define LIS3DH_ACCEL_X_EN_BIT BIT(0)
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#define LIS3DH_ACCEL_Y_EN_BIT BIT(1)
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#define LIS3DH_ACCEL_Z_EN_BIT BIT(2)
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#define LIS3DH_ACCEL_EN_BITS (LIS3DH_ACCEL_X_EN_BIT | \
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LIS3DH_ACCEL_Y_EN_BIT | LIS3DH_ACCEL_Z_EN_BIT)
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#if defined(CONFIG_LIS3DH_POWER_MODE_LOW)
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#define LIS3DH_LP_EN_BIT BIT(3)
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#elif defined(CONFIG_LIS3DH_POWER_MODE_NORMAL)
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#define LIS3DH_LP_EN_BIT 0
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#endif
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#if defined(CONFIG_LIS3DH_ODR_1)
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#define LIS3DH_ODR_IDX 1
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#elif defined(CONFIG_LIS3DH_ODR_2)
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#define LIS3DH_ODR_IDX 2
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#elif defined(CONFIG_LIS3DH_ODR_3)
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#define LIS3DH_ODR_IDX 3
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#elif defined(CONFIG_LIS3DH_ODR_4)
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#define LIS3DH_ODR_IDX 4
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#elif defined(CONFIG_LIS3DH_ODR_5)
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#define LIS3DH_ODR_IDX 5
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#elif defined(CONFIG_LIS3DH_ODR_6)
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#define LIS3DH_ODR_IDX 6
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#elif defined(CONFIG_LIS3DH_ODR_7)
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#define LIS3DH_ODR_IDX 7
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#elif defined(CONFIG_LIS3DH_ODR_8)
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#define LIS3DH_ODR_IDX 8
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#elif defined(CONFIG_LIS3DH_ODR_9_NORMAL) || defined(CONFIG_LIS3DH_ODR_9_LOW)
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#define LIS3DH_ODR_IDX 9
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#endif
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#define LIS3DH_ODR_SHIFT 4
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#define LIS3DH_ODR_BITS (LIS3DH_ODR_IDX << LIS3DH_ODR_SHIFT)
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#define LIS3DH_REG_CTRL3 0x22
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#define LIS3DH_EN_DRDY1_INT1 BIT(4)
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#define LIS3DH_REG_CTRL4 0x23
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#define LIS3DH_FS_SHIFT 4
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#define LIS3DH_FS_MASK (BIT_MASK(2) << LIS3DH_FS_SHIFT)
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#if defined(CONFIG_LIS3DH_ACCEL_RANGE_2G)
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#define LIS3DH_FS_IDX 0
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#elif defined(CONFIG_LIS3DH_ACCEL_RANGE_4G)
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#define LIS3DH_FS_IDX 1
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#elif defined(CONFIG_LIS3DH_ACCEL_RANGE_8G)
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#define LIS3DH_FS_IDX 2
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#elif defined(CONFIG_LIS3DH_ACCEL_RANGE_16G)
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#define LIS3DH_FS_IDX 3
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#endif
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#define LIS3DH_FS_BITS (LIS3DH_FS_IDX << LIS3DH_FS_SHIFT)
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#define LIS3DH_ACCEL_SCALE (SENSOR_G * (4 << LIS3DH_FS_IDX))
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#define LIS3DH_REG_ACCEL_X_LSB 0x28
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#define LIS3DH_REG_ACCEL_Y_LSB 0x2A
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#define LIS3DH_REG_ACCEL_Z_LSB 0x2C
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#define LIS3DH_REG_ACCEL_X_MSB 0x29
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#define LIS3DH_REG_ACCEL_Y_MSB 0x2B
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#define LIS3DH_REG_ACCEL_Z_MSB 0x2D
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struct lis3dh_data {
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struct device *i2c;
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int16_t x_sample;
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int16_t y_sample;
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int16_t z_sample;
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#ifdef CONFIG_LIS3DH_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_LIS3DH_TRIGGER_OWN_THREAD)
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char __stack thread_stack[CONFIG_LIS3DH_THREAD_STACK_SIZE];
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struct k_sem gpio_sem;
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#elif defined(CONFIG_LIS3DH_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_LIS3DH_TRIGGER */
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};
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#ifdef CONFIG_LIS3DH_TRIGGER
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int lis3dh_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 lis3dh_sample_fetch(struct device *dev, enum sensor_channel chan);
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int lis3dh_init_interrupt(struct device *dev);
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#endif
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#define SYS_LOG_DOMAIN "LIS3DH"
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#define SYS_LOG_LEVEL CONFIG_SYS_LOG_SENSOR_LEVEL
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#include <misc/sys_log.h>
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#endif /* __SENSOR_LIS3DH__ */
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