83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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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 ANDROID_SENSORS_IIO_UTILS_H
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#define ANDROID_SENSORS_IIO_UTILS_H
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#include <android/hardware/sensors/1.0/types.h>
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#include <dirent.h>
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include <stdint.h>
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#include <sys/ioctl.h>
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#include <functional>
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namespace android {
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namespace hardware {
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namespace sensors {
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namespace V2_0 {
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namespace subhal {
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namespace implementation {
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using ::android::hardware::sensors::V1_0::SensorType;
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extern const char* DEFAULT_IIO_DIR;
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static constexpr auto DEFAULT_IIO_BUFFER_LEN = 2;
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static constexpr auto DISABLE_CHANNEL = 0;
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static constexpr auto ENABLE_CHANNEL = 1;
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struct sensors_supported_hal {
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std::string name;
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SensorType type;
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};
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struct iio_info_channel {
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std::string name;
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uint8_t index;
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uint8_t storage_bytes;
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uint8_t bits_used;
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uint8_t shift;
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bool big_endian;
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bool sign;
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};
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struct iio_device_data {
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std::string name;
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std::string sysfspath;
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float resolution;
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float scale;
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SensorType type;
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std::vector<iio_info_channel> channelInfo;
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std::vector<double> sampling_freq_avl;
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uint8_t iio_dev_num;
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int64_t max_range;
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};
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using DeviceFilterFunction = std::function<bool(iio_device_data*)>;
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int load_iio_devices(std::string iio_dir, std::vector<iio_device_data>* iio_data,
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DeviceFilterFunction filter);
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int scan_elements(const std::string& device_dir, struct iio_device_data* iio_data);
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int enable_sensor(const std::string& name, const bool flag);
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int set_sampling_frequency(const std::string& name, const double frequency);
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} // namespace implementation
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} // namespace subhal
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} // namespace V2_0
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} // namespace sensors
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} // namespace hardware
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} // namespace android
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#endif
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