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| author |   Linus Walleij <linus.walleij@linaro.org> | 2016-04-26 10:47:09 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-06-15 09:29:04 +0200 |
| commit | 2a144dd09118d9ba8cb57ef65eb573af222c455c (patch) | |
| tree | 21e57956bbbbcb623cb7c55a419247b1ebf949d7 /tools/gpio/Makefile | |
| parent | gpio: userspace ABI for reading/writing GPIO lines (diff) | |
| download | linux-dev-2a144dd09118d9ba8cb57ef65eb573af222c455c.tar.xz linux-dev-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>
Diffstat (limited to 'tools/gpio/Makefile')
| -rw-r--r-- | tools/gpio/Makefile | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/tools/gpio/Makefile b/tools/gpio/Makefile index c155d6bc47a7..aea23949054e 100644 --- a/tools/gpio/Makefile +++ b/tools/gpio/Makefile @@ -1,12 +1,13 @@ CC = $(CROSS_COMPILE)gcc CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -all: lsgpio +all: lsgpio gpio-hammer lsgpio: lsgpio.o gpio-utils.o +gpio-hammer: gpio-hammer.o gpio-utils.o %.o: %.c gpio-utils.h .PHONY: clean clean: - rm -f *.o lsgpio + rm -f *.o lsgpio gpio-hammer |