Linux Audio
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Embedded Linux Audio
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/* * Copyright (c) 2016 Intel Corporation * * SPDX-License-Identifier: Apache-2.0 */ #ifndef __SENSOR_AK8975__ #define __SENSOR_AK8975__ #include <device.h> #define SYS_LOG_DOMAIN "AK8975" #define SYS_LOG_LEVEL CONFIG_SYS_LOG_SENSOR_LEVEL #include <logging/sys_log.h> #define AK8975_REG_CHIP_ID 0x00 #define AK8975_CHIP_ID 0x48 #define AK8975_REG_DATA_START 0x03 #define AK8975_REG_CNTL 0x0A #define AK8975_MODE_MEASURE 0x01 #define AK8975_MODE_FUSE_ACCESS 0x0F #define AK8975_REG_ADJ_DATA_START 0x10 #define AK8975_MEASURE_TIME_US 9000 #define AK8975_MICRO_GAUSS_PER_BIT 3000 #ifdef CONFIG_MPU9150 #if CONFIG_AK8975_I2C_ADDR != 0x0C #error "I2C address must be 0x0C when AK8975 is part of a MPU9150 chip" #endif #ifdef CONFIG_MPU9150_I2C_ADDR #define MPU9150_I2C_ADDR CONFIG_MPU9150_I2C_ADDR #else #define MPU9150_I2C_ADDR CONFIG_MPU6050_I2C_ADDR #endif #define MPU9150_REG_BYPASS_CFG 0x37 #define MPU9150_I2C_BYPASS_EN BIT(1) #define MPU9150_REG_PWR_MGMT1 0x6B #define MPU9150_SLEEP_EN BIT(6) #endif /* CONFIG_MPU9150 */ struct ak8975_data { struct device *i2c; s16_t x_sample; s16_t y_sample; s16_t z_sample; u8_t x_adj; u8_t y_adj; u8_t z_adj; }; #endif /* __SENSOR_AK8975__ */