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/*
* Copyright (C) 2015 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.
*/
#include "example_sensors.h"
#include <stdlib.h>
#include <time.h>
#include <hardware/sensors.h>
SensorBase::SensorBase() {}
SensorBase::~SensorBase() {}
int SensorBase::activate(int handle, int enabled) {
return 0;
}
int SensorBase::setDelay(int handle, int64_t ns) {
return 0;
}
int SensorBase::batch(int handle, int flags,
int64_t period_ns, int64_t timeout) {
return 0;
}
int SensorBase::flush(int handle) {
return 0;
}
Accelerometer::Accelerometer() {}
Accelerometer::~Accelerometer() {}
int Accelerometer::pollEvents(sensors_event_t* data, int count) {
// Returns fake random values.
data->acceleration.x = static_cast<float>(random() % kMaxRange);
data->acceleration.y = static_cast<float>(random() % kMaxRange);
data->acceleration.z = static_cast<float>(random() % kMaxRange);
return 1;
}
CustomSensor::CustomSensor() {}
CustomSensor::~CustomSensor() {}
int CustomSensor::pollEvents(sensors_event_t* data, int count) {
if (data) {
// For this custom sensor, we will return the hour of the local time.
time_t t = time(NULL);
struct tm* now = localtime(&t);
if (now) {
// Any field can be used to return data for a custom sensor.
// See definition of struct sensors_event_t in hardware/sensors.h for the
// available fields.
data->data[0] = now->tm_hour;
return 1;
}
}
// Note: poll() return value is the number of events being returned. We use
// -1 to signal an error.
return -1;
}
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