> On 2020-03-19 21:49, Lorenzo Bianconi wrote: > > > On 2020-03-19 18:40, Lorenzo Bianconi wrote: > > > > > On 2020-03-14 13:43, Lorenzo Bianconi wrote: > > > > > > On Mar 11, Jimmy Assarsson wrote: > > > > > > > Hi, > > > > > > > > > > > [...] > > > > > > > > Hi Jimmy, > > > > > > > > > > > > in order to set the full scale on LIS3MDL you can try the following patch (just > > > > > > compiled, not tested) > > > > > > > > > > > > Regards, > > > > > > Lorenzo > > > > > > > > > > Hi Lorenzo, > > > > > > > > > > Sorry for the late response and thanks for the patch! > > > > > > > > Hi Jimmy, > > > > > > > > ok, I will post the patch, thx for testing. > > > > > > Great, you can add > > > Tested-by: Jimmy Assarsson > > > > > > > > The patches seems to work. > > > > > Are there any specific tests that we should carry out? > > > > > Via the sysfs interface, we've tested reading raw values of each channel and > > > > > configuring ODR and full scale. > > > > > > > > you can try to enable batching in the hw FIFO doing something like: > > > > > > > > $echo 1 > /sys/bus/iio/devices//scan_elements/in_magn_x_en > > > > $echo 1 > /sys/bus/iio/devices//scan_elements/in_magn_y_en > > > > $echo 1 > /sys/bus/iio/devices//scan_elements/in_magn_z_en > > > > $echo 1 > /sys/bus/iio/devices//scan_elements/in_timestamp_en > > > > > > > > $watermark=64 > > > > $echo $((2*watermark)) > /sys/bus/iio/devices//buffer/length > > > > $echo $watermark > /sys/bus/iio/devices//buffer/watermark > > > > > > > > $generic_buffer -gn lsm6dsm_magn -c <# of samples> > > > > > > Ok. I don't got any scan_elements nor buffer directory, for any of the devices. > > > I guess it is not possible to use the FIFO without configuring any interrupt? > > > We got the following dts: > > > &spi1 { > > > #address-cells = <1>; > > > #size-cells = <0>; > > > lsm6dsm@0 { > > > compatible = "st,lsm6dsm"; > > > reg = <0x0>; > > > > > > spi-max-frequency = <500000>; > > > st,pullups = "true"; > > > > yes, you need to provide the interrupt line doing something like (this is from > > the dts on my rpi): > > > > lsm6dsm@0 { > > ... > > interrupt-parent = <&gpio>; > > interrupts = <21 0x4>; > > ... > > }; > > > > > }; > > > }; > > > > > > I'll look into this tomorrow or in the beginning of next week, thanks for the help. > > Now I've tested this. It looks fine, except for the very first sample: > $ ./iio_generic_buffer -gn lsm6dsm_magn -c 1 > iio device number being used is 3 > trigger-less mode selected > -3.250836 -2.796192 10.212408 1584976428879020199 > 1.893036 2.343738 -0.853224 1584976428917070199 > 1.888218 2.343300 -0.852786 1584976428955095199 > 1.888218 2.343300 -0.852786 1584976428993145199 > 1.889532 2.345490 -0.851472 1584976429031170199 values seems reasonable but I guess it depends on sensor calibration and how is oriented. Do you have any app to test it? Regards, Lorenzo > > Is this expected? > > Regards, > jimmy