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iio: event_monitor: Flush output on event

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By flushing the output, iio_event_monitor can be more useful to programs
chained along with it.

  iio_event_monitor stk3310 | awk '/rising/{system("my_unlockscreen.sh")} /falling/{system("my_lockscreen.sh")}'

Without this flush, the above example would buffer a number of events,
then after a while run the lock/unlock scripts several times.

Signed-off-by: Zach DeCook <zachdecook@librem.one>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Zach DeCook 2021-12-08 16:48:08 -05:00 committed by Jonathan Cameron
parent 8b7651f259
commit c054fe9936
1 changed files with 1 additions and 0 deletions
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tools/iio/iio_event_monitor.c
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@ -279,6 +279,7 @@ static void print_event(struct iio_event_data *event)
printf(", direction: %s", iio_ev_dir_text[dir]);
printf("\n");
fflush(stdout);
}
/* Enable or disable events in sysfs if the knob is available */