>
>
> On 10/09/2019 09.12, Lorenzo Bianconi wrote:
> > probably a silly question..are you tracing the interrupt line with an
> > oscilloscope or a logical analyser? If you dump interrupt counters in
> > /proc/interrupts will you see an interrupt storm for the selected irq
> > pin?
> >
>
> Not a silly question ;-)
>
> An Oscilloscope :-)
ack, thx
Could you please try to carry out the following test?
1- set the FIFO watermark to a high level (e.g. 128)
$echo 256 > /sys/bus/iio/devices/iio:device{x}/buffer/length
$echo 128 > /sys/bus/iio/devices/iio:device{x}/buffer/watermark
2- set a low acc odr (e.g 13Hz)
$echo 13 > /sys/bus/iio/devices/iio:device{x}/sampling_frequency
3- start reading from the accel and generate a wake-upp event
Is still happen? Are you able to decode bus transaction? (register addresses,
data read, ..)
> The interrupt counter is stopping.
> If I switch to IRQ_TYPE_LEVEL_HIGH, (to test if additional readings of the
> event and FIFO registers would help. It results in interrupt storm and the
> line continues to stay high.
>
@Denis, @Mario, @Armando: any thoughts about this?
Regards,
Lorenzo
> /Sean
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