| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #ifndef ANDROID_SENSORS_IIO_UTILS_H |
| #define ANDROID_SENSORS_IIO_UTILS_H |
| |
| #include <android/hardware/sensors/1.0/types.h> |
| #include <dirent.h> |
| #include <linux/ioctl.h> |
| #include <linux/types.h> |
| #include <stdint.h> |
| #include <sys/ioctl.h> |
| |
| namespace android { |
| namespace hardware { |
| namespace sensors { |
| namespace V2_0 { |
| namespace subhal { |
| namespace implementation { |
| |
| using ::android::hardware::sensors::V1_0::SensorType; |
| |
| static constexpr auto DEFAULT_IIO_BUFFER_LEN = 2; |
| static constexpr auto DISABLE_CHANNEL = 0; |
| static constexpr auto ENABLE_CHANNEL = 1; |
| |
| struct sensors_supported_hal { |
| std::string name; |
| SensorType type; |
| }; |
| |
| struct iio_info_channel { |
| std::string name; |
| uint8_t index; |
| uint8_t storage_bytes; |
| uint8_t bits_used; |
| uint8_t shift; |
| bool big_endian; |
| bool sign; |
| }; |
| |
| struct iio_device_data { |
| std::string name; |
| std::string sysfspath; |
| float resolution; |
| SensorType type; |
| std::vector<iio_info_channel> channelInfo; |
| std::vector<double> sampling_freq_avl; |
| uint8_t iio_dev_num; |
| unsigned int power_microwatts; |
| int64_t max_range; |
| }; |
| |
| int load_iio_devices(std::vector<iio_device_data>* iio_data, |
| const std::vector<sensors_supported_hal>& supported_sensors); |
| int scan_elements(const std::string& device_dir, struct iio_device_data* iio_data); |
| int enable_sensor(const std::string& name, const bool flag); |
| int set_sampling_frequency(const std::string& name, const double frequency); |
| } // namespace implementation |
| } // namespace subhal |
| } // namespace V2_0 |
| } // namespace sensors |
| } // namespace hardware |
| } // namespace android |
| #endif |