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/*
* LED command support for barebox
*
* (C) Copyright 2010 Sascha Hauer, Pengutronix
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <common.h>
#include <led.h>
#include <command.h>
#include <getopt.h>
#include <errno.h>
static int do_led(int argc, char *argv[])
{
unsigned long value;
struct led *led;
int ret;
if (argc == 1) {
int i = 0;
led = led_by_number(i);
if (!led) {
printf("no registered LEDs\n");
return COMMAND_ERROR;
}
printf("registered LEDs:\n");
while ((led = led_by_number(i))) {
printf("%-2d: name: %-10s max_value: %d\n",
i, led->name ? led->name : "none",
led->max_value);
i++;
}
return 0;
}
if (argc != 3)
return COMMAND_ERROR_USAGE;
led = led_by_name_or_number(argv[1]);
if (!led) {
printf("no such LED: %s\n", argv[1]);
return 1;
}
value = simple_strtoul(argv[optind + 1], NULL, 0);
ret = led_set(led, value);
if (ret < 0) {
perror("led");
return 1;
}
return 0;
}
/**
* @page led_command
The exact meaning of <value> is unspecified. It can be a color in case of rgb
LEDs or a brightness if this is controllable. In most cases only 1 for enabled
is allowed.
*/
BAREBOX_CMD_HELP_START(led)
BAREBOX_CMD_HELP_TEXT("Control the value of a LED. The exact meaning of VALUE is unspecified,")
BAREBOX_CMD_HELP_TEXT("it can be a brightness, or a color. Most often a value of '1' means on")
BAREBOX_CMD_HELP_TEXT("and '0' means off.")
BAREBOX_CMD_HELP_TEXT("")
BAREBOX_CMD_HELP_TEXT("Without arguments the available LEDs are listed.")
BAREBOX_CMD_HELP_END
BAREBOX_CMD_START(led)
.cmd = do_led,
BAREBOX_CMD_DESC("control LEDs")
BAREBOX_CMD_OPTS("LED VALUE")
BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
BAREBOX_CMD_HELP(cmd_led_help)
BAREBOX_CMD_END
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