82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
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/*
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* Copyright (C) 2008 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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#include <hardware/sensors.h>
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#include "nusensors.h"
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/*****************************************************************************/
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/*
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* The SENSORS Module
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*/
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/*
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* the AK8973 has a 8-bit ADC but the firmware seems to average 16 samples,
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* or at least makes its calibration on 12-bits values. This increases the
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* resolution by 4 bits.
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*/
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static const struct sensor_t sSensorList[] = {
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{ "BMA150 3-axis Accelerometer",
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"Bosch",
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1, SENSORS_HANDLE_BASE+ID_A,
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SENSOR_TYPE_ACCELEROMETER, 2.8f, 1.0f/4032.0f, 3.0f, 0, { } },
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{ "AK8973 3-axis Magnetic field sensor",
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"Asahi Kasei",
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1, SENSORS_HANDLE_BASE+ID_M,
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SENSOR_TYPE_MAGNETIC_FIELD, 2000.0f, 1.0f, 6.7f, 0, { } },
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{ "AK8973 Orientation sensor",
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"Asahi Kasei",
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1, SENSORS_HANDLE_BASE+ID_O,
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SENSOR_TYPE_ORIENTATION, 360.0f, 1.0f, 9.7f, 0, { } },
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};
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static int open_sensors(const struct hw_module_t* module, const char* name,
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struct hw_device_t** device);
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static int sensors__get_sensors_list(struct sensors_module_t* module,
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struct sensor_t const** list)
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{
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*list = sSensorList;
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return ARRAY_SIZE(sSensorList);
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}
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static struct hw_module_methods_t sensors_module_methods = {
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.open = open_sensors
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};
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const struct sensors_module_t HAL_MODULE_INFO_SYM = {
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.common = {
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.tag = HARDWARE_MODULE_TAG,
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.version_major = 1,
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.version_minor = 0,
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.id = SENSORS_HARDWARE_MODULE_ID,
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.name = "AK8973A Sensors Module",
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.author = "The Android Open Source Project",
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.methods = &sensors_module_methods,
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},
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.get_sensors_list = sensors__get_sensors_list
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};
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/*****************************************************************************/
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static int open_sensors(const struct hw_module_t* module, const char* name,
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struct hw_device_t** device)
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{
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return init_nusensors(module, device);
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}
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