Hi CVS,
Thanks again for you reply, in the logcat info ,i find the
following error:
D/SensorService( 1412): nuSensorService starting...
E/SensorService( 1412): couldn't open device for module sensors
(Invalid argument)
And I followed the error info ,and find the in the
SensorDevice.cpp file,the error info print.
SensorDevice::SensorDevice()
: mSensorDevice(0),
mSensorModule(0)
{
status_t err = hw_get_module(SENSORS_HARDWARE_MODULE_ID,
(hw_module_t const**)&mSensorModule);
LOGE_IF(err, "couldn't load %s module
(%s)",SENSORS_HARDWARE_MODULE_ID, strerror(-err)); //there is no
error
if (mSensorModule) {
err = sensors_open(&mSensorModule->common, &mSensorDevice);
LOGE_IF(err, "couldn't open device for module %s
(%s)",SENSORS_HARDWARE_MODULE_ID, strerror(-err)); //error hapen
So ,i add some print info for print the &mSensorModule->common and
&mSensorDevice,and get the follow info:
D/SensorService( 1412): nuSensorService starting...
E/SensorService( 1412): &mSensorModule->common=TMWH
E/SensorService( 1412): &mSensorDevice=
E/SensorService( 1412): IIIII couldn't open device for module sensors
(Invalid argument)
I don't know where is the problem,so hope you give me some
lights.Thanks.
Regards
Tommy
On 11月1日, 下午9时28分, Chinmay V S <[email protected]> wrote:
> The logs with log-tags "SensorTestOutput" show that the sensor-HAL does NOT
> report any sensors to be implemented.
>
> Looking at the contents of the /system/lib/hw directory, we can see
> multiple copies of sensor-HAL
> sensors.goldfish.so
> sensors.omap4.so
> sensors.omap4430.so
> sensors.pandaboard.so
>
> The sensors.goldfish.so is for the emulator.
> Similarly, other the .so files are for different builds.
> The android-runtime will always link to *sensors.<TARGET_BOARD_PLATFORM>.so*
>
> The file that gets built can be changed by modifying the Android.mk in
> libsensors as follows:
> LOCAL_MODULE := sensors.$(*TARGET_BOARD_PLATFORM*)
>
> Also check that the following line is present in Android.mk
> LOCAL_CFLAGS := -DLOG_TAG=\"Sensors\"
> (Helpful for debugging as we can then filter logcat output based on
> log-tag=SENSORS)
>
> This should generate the proper .so file (sensor-HAL).
>
> Also, before copying the newly build .so file onto the target, clean the
> directory as follows
> rm -rf system/lib/hw/sensors.*
> (This will remove the unrelated/unnecessary .so files)
>
> Finally during boot-up check for the logs from the very start of the device
> (not just test-application).
> During early-bootup, a couple logs with log-tag "SENSORS" will be emitted.
> These will contain the name of .so file being loaded.
> Check for the log to make sure that the proper .so file is loaded.
>
> GoodLUCK!
> - CVS
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