On 31/03/15 17:36, s.rawat wrote: > Hi Jonathan, > > I have tested and used the generic_buffer.c application and found it > to be good for testing the IIO drivers.I tried it on one of the > android system and found it to be failing.(Android System has CPU ABI > armv7-eabi ) > > Here is a short summary to investigate why it didnt work on > Andorid.Can you plz provide your comments: > > I have two system having different kernel version and drivers(IIO) on > which I can run the > generic_buffer.c(http://lxr.free-electrons.com/source/drivers/staging/iio/Documentation/generic_buffer.c) > application .On one system it works(kernel 3.18.15) fine but on the > other(3.10.20) it does not give the input reports data.I have already > applied the attached patch to it. > > I have checked that the system on which it is working has the > following sysfs under /sys/bus/iio/devices/iio:deviceX (where X is > 1,2,3...) > > buffer > > dev > > in_accel_hysteresis > > in_accel_offset > > in_accel_sampling_frequency > > in_accel_scale > > in_accel_x_raw > > in_accel_y_raw > > in_accel_z_raw > > name > > power > > scan_elements > > subsystem > > trigger > > uevent > > > > This is for accelerometer, similarly for magnetometer (in_magn_x_raw,_y_raw,z_raw etc) and for Gyrometer ( in_anglvel_x_raw,in_anglvel_y_raw,in_anglvel_z_raw ) > > and the one on which it is not working has the below sysfs under /sys/bus/iio/devices/iio:deviceX (where X is 1,2,3...) : > > buffer > > dev > > in_accel_hysteresis > > in_accel_offset > > in_accel_sampling_frequency > > in_accel_scale > > name > > power > > scan_elements > > subsystem > > trigger > > uevent > > > > Is the missing *_x_raw,_y_raw and _z_raw* component main reason for not working of the app?If yes how can I enable it? – Not as such. However it is certainly curious that you have them missing. These provide direct sysfs access to the accelerations. We did at one point make it a requirement for the iio_chan_spec to explicitly include the IIO_CHAN_INFO_RAW bit rather than using the prior separate callbacks for that. Perhaps it is missing in your driver? What is the actual driver in question? > > Additionally, the system on which it doesn’t works is the Android System for which I have cross compiled the generic_buffer.c > > > > *[1] + stopped (signal) ./generic buffer –c 10 –n accel_3d (*basically waits at some point in the application and then some illegal termination may be)** > > > > Plz let me know your comments on this.I need to run the same app for the Android system. > > > Many Thanks in advance ! > > Best Rgds, > > Saurabh > -- 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
