Look for level transitions when testing toggling
values because using fixed delays to assume value
changes is not reliable.
Signed-off-by: Joe Slater <joe.slater@windriver.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
cherry-pick from meta-oe/master 45a8bb2620...
Signed-off-by: Joe Slater <joe.slater@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
