tree 5058310cc8675829b3cfb28561926b0c717244f1
parent 61f922db72216b00386581c851db9c9095961522
author Linus Walleij <linus.walleij@linaro.org> 1464860313 +0200
committer Linus Walleij <linus.walleij@linaro.org> 1465975769 +0200

tools/gpio: add the gpio-event-mon tool

The gpio-event-mon is used from userspace as an example of how
to monitor GPIO line events. It will latch on to a certain
GPIO line on a certain gpiochip and print timestamped events
as they arrive.

Example output:
$ gpio-event-mon -n gpiochip2 -o 0 -r -f
Monitoring line 0 on gpiochip2
Initial line value: 1
GPIO EVENT 946685798487609863: falling edge
GPIO EVENT 946685798732482910: rising edge
GPIO EVENT 946685799115997314: falling edge
GPIO EVENT 946685799381469726: rising edge

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>