HID: samples/hidraw: make it possible to select device
Makefile that can actually build the example, and allow selecting device to work on. Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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@ -8,3 +8,5 @@ hostprogs-y := hid-example
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always := $(hostprogs-y)
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always := $(hostprogs-y)
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HOSTCFLAGS_hid-example.o += -I$(objtree)/usr/include
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HOSTCFLAGS_hid-example.o += -I$(objtree)/usr/include
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all: hid-example
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@ -46,10 +46,14 @@ int main(int argc, char **argv)
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char buf[256];
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char buf[256];
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struct hidraw_report_descriptor rpt_desc;
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struct hidraw_report_descriptor rpt_desc;
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struct hidraw_devinfo info;
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struct hidraw_devinfo info;
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char *device = "/dev/hidraw0";
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if (argc > 1)
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device = argv[1];
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/* Open the Device with non-blocking reads. In real life,
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/* Open the Device with non-blocking reads. In real life,
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don't use a hard coded path; use libudev instead. */
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don't use a hard coded path; use libudev instead. */
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fd = open("/dev/hidraw0", O_RDWR|O_NONBLOCK);
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fd = open(device, O_RDWR|O_NONBLOCK);
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if (fd < 0) {
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if (fd < 0) {
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perror("Unable to open device");
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perror("Unable to open device");
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