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/*
* Copyright (C) 2008 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 <string.h>
#include <stdint.h>
#include <string.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <cutils/log.h>
#include <hardware/sensors.h>
#include <utils/Timers.h>
char const* getSensorName(int type) {
switch(type) {
case SENSOR_TYPE_ACCELEROMETER:
return "Acc";
case SENSOR_TYPE_MAGNETIC_FIELD:
return "Mag";
case SENSOR_TYPE_ORIENTATION:
return "Ori";
case SENSOR_TYPE_GYROSCOPE:
return "Gyr";
case SENSOR_TYPE_LIGHT:
return "Lux";
case SENSOR_TYPE_PRESSURE:
return "Bar";
case SENSOR_TYPE_TEMPERATURE:
return "Tmp";
case SENSOR_TYPE_PROXIMITY:
return "Prx";
case SENSOR_TYPE_GRAVITY:
return "Grv";
case SENSOR_TYPE_LINEAR_ACCELERATION:
return "Lac";
case SENSOR_TYPE_ROTATION_VECTOR:
return "Rot";
case SENSOR_TYPE_RELATIVE_HUMIDITY:
return "Hum";
case SENSOR_TYPE_AMBIENT_TEMPERATURE:
return "Tam";
}
return "ukn";
}
int main(int argc, char** argv)
{
int err;
struct sensors_poll_device_t* device;
struct sensors_module_t* module;
err = hw_get_module(SENSORS_HARDWARE_MODULE_ID, (hw_module_t const**)&module);
if (err != 0) {
printf("hw_get_module() failed (%s)\n", strerror(-err));
return 0;
}
err = sensors_open(&module->common, &device);
if (err != 0) {
printf("sensors_open() failed (%s)\n", strerror(-err));
return 0;
}
struct sensor_t const* list;
int count = module->get_sensors_list(module, &list);
printf("%d sensors found:\n", count);
for (int i=0 ; i<count ; i++) {
printf("%s\n"
"\tvendor: %s\n"
"\tversion: %d\n"
"\thandle: %d\n"
"\ttype: %d\n"
"\tmaxRange: %f\n"
"\tresolution: %f\n"
"\tpower: %f mA\n",
list[i].name,
list[i].vendor,
list[i].version,
list[i].handle,
list[i].type,
list[i].maxRange,
list[i].resolution,
list[i].power);
}
static const size_t numEvents = 16;
sensors_event_t buffer[numEvents];
for (int i=0 ; i<count ; i++) {
err = device->activate(device, list[i].handle, 0);
if (err != 0) {
printf("deactivate() for '%s'failed (%s)\n",
list[i].name, strerror(-err));
return 0;
}
}
for (int i=0 ; i<count ; i++) {
err = device->activate(device, list[i].handle, 1);
if (err != 0) {
printf("activate() for '%s'failed (%s)\n",
list[i].name, strerror(-err));
return 0;
}
device->setDelay(device, list[i].handle, ms2ns(10));
}
do {
int n = device->poll(device, buffer, numEvents);
if (n < 0) {
printf("poll() failed (%s)\n", strerror(-err));
break;
}
printf("read %d events:\n", n);
for (int i=0 ; i<n ; i++) {
const sensors_event_t& data = buffer[i];
if (data.version != sizeof(sensors_event_t)) {
printf("incorrect event version (version=%d, expected=%d",
data.version, sizeof(sensors_event_t));
break;
}
switch(data.type) {
case SENSOR_TYPE_ACCELEROMETER:
case SENSOR_TYPE_MAGNETIC_FIELD:
case SENSOR_TYPE_ORIENTATION:
case SENSOR_TYPE_GYROSCOPE:
case SENSOR_TYPE_GRAVITY:
case SENSOR_TYPE_LINEAR_ACCELERATION:
case SENSOR_TYPE_ROTATION_VECTOR:
printf("sensor=%s, time=%lld, value=<%5.1f,%5.1f,%5.1f>\n",
getSensorName(data.type),
data.timestamp,
data.data[0],
data.data[1],
data.data[2]);
break;
case SENSOR_TYPE_LIGHT:
case SENSOR_TYPE_PRESSURE:
case SENSOR_TYPE_TEMPERATURE:
case SENSOR_TYPE_PROXIMITY:
case SENSOR_TYPE_RELATIVE_HUMIDITY:
case SENSOR_TYPE_AMBIENT_TEMPERATURE:
printf("sensor=%s, time=%lld, value=%f\n",
getSensorName(data.type),
data.timestamp,
data.data[0]);
break;
default:
printf("sensor=%d, time=%lld, value=<%f,%f,%f, ...>\n",
data.type,
data.timestamp,
data.data[0],
data.data[1],
data.data[2]);
break;
}
}
} while (1); // fix that
for (int i=0 ; i<count ; i++) {
err = device->activate(device, list[i].handle, 0);
if (err != 0) {
printf("deactivate() for '%s'failed (%s)\n",
list[i].name, strerror(-err));
return 0;
}
}
err = sensors_close(device);
if (err != 0) {
printf("sensors_close() failed (%s)\n", strerror(-err));
}
return 0;
}
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