Hi Nathan/Ge,
I'm playing with Invensense MPU6500 device but I'm having problems
receiving data when the DPM is enabled.
I've rebased the code from 3.4 [1] on top of the latest iio git
tree. Without DMP enabled, I see interrupts arriving and I can
read data from /dev/iio:device0.
I'm using the following sequence for test:
sysfs_dev=/sys/bus/iio/devices/iio:device0
#Write dmp fw
fw_loaded=`cat ${sysfs_dev}/firmware_loaded`
if [ $fw_loaded -eq 0 ]; then
fwtool write /bin/fw.bin
fi
#Enable accel
echo 0 > ${sysfs_dev}/buffer/enable
echo 200 > ${sysfs_dev}/sampling_frequency
echo 1 > ${sysfs_dev}/accel_fifo_enable
echo 1 > ${sysfs_dev}/accel_enable
echo 1 > ${sysfs_dev}/gyro_fifo_enable
echo 1 > ${sysfs_dev}/gyro_enable
#echo 1 > ${sysfs_dev}/master_enable
#Enable DMP
echo 1 > ${sysfs_dev}/dmp_on
echo 1 > ${sysfs_dev}/dmp_int_on
echo 1 > ${sysfs_dev}/dmp_event_int_on
echo 1 > ${sysfs_dev}/buffer/enable
cat /dev/iio\:device0
Now, the problem is that there is not interrupt triggered. Have you
faced similar issues? Is there something wrong with the above sequence?
thanks,
Daniel.
[1]
https://android.googlesource.com/kernel/msm/+/android-msm-hammerhead-3.4-kk-fr2/drivers/staging/iio/imu/inv_mpu
--
To unsubscribe from this list: send the line "unsubscribe linux-iio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
