55 lines
1.2 KiB
C
55 lines
1.2 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_AK8975_AK8975_H_
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#define ZEPHYR_DRIVERS_SENSOR_AK8975_AK8975_H_
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#include <device.h>
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#define AK8975_REG_CHIP_ID 0x00
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#define AK8975_CHIP_ID 0x48
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#define AK8975_REG_DATA_START 0x03
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#define AK8975_REG_CNTL 0x0A
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#define AK8975_MODE_MEASURE 0x01
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#define AK8975_MODE_FUSE_ACCESS 0x0F
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#define AK8975_REG_ADJ_DATA_START 0x10
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#define AK8975_MEASURE_TIME_US 9000
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#define AK8975_MICRO_GAUSS_PER_BIT 3000
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#if DT_NODE_HAS_PROP(DT_INST(0, invensense_mpu9150), reg)
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#if DT_REG_ADDR(DT_INST(0, asahi_kasei_ak8975)) != 0x0C
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#error "I2C address must be 0x0C when AK8975 is part of a MPU9150 chip"
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#endif
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#define MPU9150_I2C_ADDR DT_REG_ADDR(DT_INST(0, invensense_mpu9150))
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#define MPU9150_REG_BYPASS_CFG 0x37
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#define MPU9150_I2C_BYPASS_EN BIT(1)
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#define MPU9150_REG_PWR_MGMT1 0x6B
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#define MPU9150_SLEEP_EN BIT(6)
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#endif /* DT_NODE_HAS_PROP(DT_INST(0, invensense_mpu9150), reg) */
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struct ak8975_data {
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const 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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uint8_t x_adj;
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uint8_t y_adj;
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uint8_t z_adj;
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};
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#endif /* ZEPHYR_DRIVERS_SENSOR_AK8975_AK8975_H_ */
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