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improve sensorservice dumpsys and increase the max sensor rate to 1 ms (1000Hz) 

the increased maximum rate is needed for proper gyro integration, current gyro
parts can sample at up to 800Hz

Change-Id: Ide75f6d5bc7a0fdafeb2dafd72db39e7afb9e794
This commit is contained in:
Mathias Agopian 2010-11-05 19:12:58 -07:00
parent 1e0b1e8491
commit 24d72350f3
3 changed files with 16 additions and 5 deletions
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3
services/sensorservice/SensorService.cpp
View File

@ -175,10 +175,11 @@ status_t SensorService::dump(int fd, const Vector<String16>& args)
for (size_t i=0 ; i<mSensorList.size() ; i++) {
const Sensor& s(mSensorList[i]);
const sensors_event_t& e(mLastEventSeen.valueFor(s.getHandle()));
snprintf(buffer, SIZE, "%s (vendor=%s, handle=%d, last=<%5.1f,%5.1f,%5.1f>)\n",
snprintf(buffer, SIZE, "%s (vendor=%s, handle=%d, maxRate=%.2fHz, last=<%5.1f,%5.1f,%5.1f>)\n",
s.getName().string(),
s.getVendor().string(),
s.getHandle(),
s.getMinDelay() ? (1000000.0f / s.getMinDelay()) : 0.0f,
e.data[0], e.data[1], e.data[2]);
result.append(buffer);
}

4
services/sensorservice/SensorService.h
View File

@ -49,8 +49,8 @@ class SensorService :
{
friend class BinderService<SensorService>;
static const nsecs_t MINIMUM_EVENTS_PERIOD = 10000000; // 10ms
static const nsecs_t DEFAULT_EVENTS_PERIOD = 200000000; // 200 ms
static const nsecs_t MINIMUM_EVENTS_PERIOD = 1000000; // 1000 Hz
static const nsecs_t DEFAULT_EVENTS_PERIOD = 200000000; // 5 Hz
SensorService();
virtual ~SensorService();

14
services/sensorservice/tests/sensorservicetest.cpp
View File

@ -27,15 +27,25 @@ int receiver(int fd, int events, void* data)
sp<SensorEventQueue> q((SensorEventQueue*)data);
ssize_t n;
ASensorEvent buffer[8];
static nsecs_t oldTimeStamp = 0;
while ((n = q->read(buffer, 8)) > 0) {
for (int i=0 ; i<n ; i++) {
if (buffer[i].type == Sensor::TYPE_ACCELEROMETER) {
if (buffer[i].type == Sensor::TYPE_GYROSCOPE) {
printf("time=%lld, value=<%5.1f,%5.1f,%5.1f>\n",
buffer[i].timestamp,
buffer[i].acceleration.x,
buffer[i].acceleration.y,
buffer[i].acceleration.z);
}
if (oldTimeStamp) {
float t = float(buffer[i].timestamp - oldTimeStamp) / s2ns(1);
printf("%f ms (%f Hz)\n", t*1000, 1.0/t);
}
oldTimeStamp = buffer[i].timestamp;
}
}
if (n<0 && n != -EAGAIN) {
@ -56,7 +66,7 @@ int main(int argc, char** argv)
sp<SensorEventQueue> q = mgr.createEventQueue();
printf("queue=%p\n", q.get());
Sensor const* accelerometer = mgr.getDefaultSensor(Sensor::TYPE_ACCELEROMETER);
Sensor const* accelerometer = mgr.getDefaultSensor(Sensor::TYPE_GYROSCOPE);
printf("accelerometer=%p (%s)\n",
accelerometer, accelerometer->getName().string());
q->enableSensor(accelerometer);