tools: gpio: add debounce support to gpio-event-mon (cf048e05) · Commits · 戴 / test

tools/gpio/gpio-event-mon.c

+17 −3

Original line number	Diff line number	Diff line
		@@ -148,11 +148,12 @@ void print_usage(void)
		" -s Set line as open source\n"
		" -r Listen for rising edges\n"
		" -f Listen for falling edges\n"
		" -b <n> Debounce the line with period n microseconds\n"
		" [-c <n>] Do <n> loops (optional, infinite loop if not stated)\n"
		" -? This helptext\n"
		"\n"
		"Example:\n"
		"gpio-event-mon -n gpiochip0 -o 4 -r -f\n"
		"gpio-event-mon -n gpiochip0 -o 4 -r -f -b 10000\n"
		);
		}

		@@ -167,11 +168,12 @@ int main(int argc, char **argv)
		unsigned int num_lines = 0;
		unsigned int loops = 0;
		struct gpio_v2_line_config config;
		int c;
		int c, attr, i;
		unsigned long debounce_period_us = 0;

		memset(&config, 0, sizeof(config));
		config.flags = GPIO_V2_LINE_FLAG_INPUT;
		while ((c = getopt(argc, argv, "c:n:o:dsrf?")) != -1) {
		while ((c = getopt(argc, argv, "c:n:o:b:dsrf?")) != -1) {
		switch (c) {
		case 'c':
		loops = strtoul(optarg, NULL, 10);
		@@ -187,6 +189,9 @@ int main(int argc, char **argv)
		lines[num_lines] = strtoul(optarg, NULL, 10);
		num_lines++;
		break;
		case 'b':
		debounce_period_us = strtoul(optarg, NULL, 10);
		break;
		case 'd':
		config.flags \|= GPIO_V2_LINE_FLAG_OPEN_DRAIN;
		break;
		@@ -205,6 +210,15 @@ int main(int argc, char **argv)
		}
		}

		if (debounce_period_us) {
		attr = config.num_attrs;
		config.num_attrs++;
		for (i = 0; i < num_lines; i++)
		gpiotools_set_bit(&config.attrs[attr].mask, i);
		config.attrs[attr].attr.id = GPIO_V2_LINE_ATTR_ID_DEBOUNCE;
		config.attrs[attr].attr.debounce_period_us = debounce_period_us;
		}

		if (!device_name \|\| num_lines == 0) {
		print_usage();
		return -1;