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authorLinus Walleij <linus.walleij@linaro.org>2016-04-26 10:47:09 +0200
committerLinus Walleij <linus.walleij@linaro.org>2016-06-15 09:29:04 +0200
commit2a144dd09118d9ba8cb57ef65eb573af222c455c (patch)
tree21e57956bbbbcb623cb7c55a419247b1ebf949d7 /tools/perf/scripts/python/export-to-postgresql.py
parentgpio: userspace ABI for reading/writing GPIO lines (diff)
downloadwireguard-linux-2a144dd09118d9ba8cb57ef65eb573af222c455c.tar.xz
wireguard-linux-2a144dd09118d9ba8cb57ef65eb573af222c455c.zip
tools/gpio: add the gpio-hammer tool
The gpio-hammer is used from userspace as an example of how to retrieve a GPIO handle for one or several GPIO lines and hammer the outputs from low to high and back again. It will pulse the selected lines once per second for a specified number of times or indefinitely if no loop count is supplied. Example output: $ gpio-hammer -n gpiochip0 -o5 -o6 -o7 Hammer lines [5, 6, 7] on gpiochip0, initial states: [1, 1, 1] [-] [5: 0, 6: 0, 7: 0] Tested-by: Michael Welling <mwelling@ieee.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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