#include "options.h"
#include "debug.h"
+void print_help_and_die(const char *exec_name)
+{
+ pr_info("Usage: %s [option]\n", exec_name);
+ pr_info(" -d, --device=DEVICE path to the serial device\n");
+ pr_info(" default: /dev/ttyUSB0\n");
+ pr_info(" -b, --baud=BAUD device baud rate, default 128000\n");
+ pr_info(" -o, --output logfile path, stdout only if omited\n");
+ pr_info(" -v, --verbose increase verbosity\n");
+ pr_info(" -q, --quiet decrease verbosity\n");
+ pr_info(" -h, --help show this help\n");
+
+ exit(0);
+}
+
static void set_default_options(struct plotter_options *opts)
{
bzero(opts, sizeof(*opts));
{ .val = 'b', .name = "baud", .has_arg = 1 },
{ .val = 'v', .name = "verbose", .has_arg = 2 },
{ .val = 'q', .name = "quiet", },
+ { .val = 'h', .name = "help", },
};
- char short_options[] = "d:o:b:vq";
+ char short_options[] = "d:o:b:vqh";
set_default_options(opts);
trace_level--;
pr_debug("Degreased trace level to %d\n", trace_level);
break;
+ case 'h':
+ print_help_and_die(argv[0]);
+ break;
case '?':
return -1;
}