Add 'led' command
This patch allows any board implementing the coloured LED API to control the LEDs from the console. led [green | yellow | red | all ] [ on | off ] or led [ 1 | 2 | 3 | all ] [ on | off ] Adds configuration item CONFIG_CMD_LED enabling the command. Partially based on patch from Ulf Samuelsson: http://www.mail-archive.com/u-boot@lists.denx.de/msg09593.html. Updated based on feedback: http://www.mail-archive.com/u-boot@lists.denx.de/msg41847.html https://groups.google.com/d/topic/beagleboard/8Wf1HiK_QBo/discussion * Fixed a handful of style issues. * Significantly reduced the number of #ifdefs and redundant code * Converted redundant code into loops test against a structure * Made use of cmd_usage() * Introduced a str_onoff() function, but haven't yet put it in common * Eliminated trailing newline Signed-off-by: Jason Kridner <jkridner@beagleboard.org> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This commit is contained in:
Jason Kridner
Albert ARIBAUD
parent
cd4b8a6329
commit
b633f66f02
153
common/cmd_led.c
Normal file
153
common/cmd_led.c
Normal file
@ -0,0 +1,153 @@
|
||||
/*
|
||||
* (C) Copyright 2010
|
||||
* Jason Kridner <jkridner@beagleboard.org>
|
||||
*
|
||||
* Based on cmd_led.c patch from:
|
||||
* http://www.mail-archive.com/u-boot@lists.denx.de/msg06873.html
|
||||
* (C) Copyright 2008
|
||||
* Ulf Samuelsson <ulf.samuelsson@atmel.com>
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||
* MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include <common.h>
|
||||
#include <config.h>
|
||||
#include <command.h>
|
||||
#include <status_led.h>
|
||||
|
||||
struct led_tbl_s {
|
||||
char *string; /* String for use in the command */
|
||||
led_id_t mask; /* Mask used for calling __led_set() */
|
||||
void (*on)(void); /* Optional fucntion for turning LED on */
|
||||
void (*off)(void); /* Optional fucntion for turning LED on */
|
||||
};
|
||||
|
||||
typedef struct led_tbl_s led_tbl_t;
|
||||
|
||||
static const led_tbl_t led_commands[] = {
|
||||
#ifdef CONFIG_BOARD_SPECIFIC_LED
|
||||
#ifdef STATUS_LED_BIT
|
||||
{ "0", STATUS_LED_BIT, NULL, NULL },
|
||||
#endif
|
||||
#ifdef STATUS_LED_BIT1
|
||||
{ "1", STATUS_LED_BIT1, NULL, NULL },
|
||||
#endif
|
||||
#ifdef STATUS_LED_BIT2
|
||||
{ "2", STATUS_LED_BIT2, NULL, NULL },
|
||||
#endif
|
||||
#ifdef STATUS_LED_BIT3
|
||||
{ "3", STATUS_LED_BIT3, NULL, NULL },
|
||||
#endif
|
||||
#endif
|
||||
#ifdef STATUS_LED_GREEN
|
||||
{ "green", STATUS_LED_GREEN, green_LED_off, green_LED_on },
|
||||
#endif
|
||||
#ifdef STATUS_LED_YELLOW
|
||||
{ "yellow", STATUS_LED_YELLOW, yellow_LED_off, yellow_LED_on },
|
||||
#endif
|
||||
#ifdef STATUS_LED_RED
|
||||
{ "red", STATUS_LED_RED, red_LED_off, red_LED_on },
|
||||
#endif
|
||||
#ifdef STATUS_LED_BLUE
|
||||
{ "blue", STATUS_LED_BLUE, blue_LED_off, blue_LED_on },
|
||||
#endif
|
||||
{ NULL, 0, NULL, NULL }
|
||||
};
|
||||
|
||||
int str_onoff (char *var)
|
||||
{
|
||||
if (strcmp(var, "off") == 0) {
|
||||
return 0;
|
||||
}
|
||||
if (strcmp(var, "on") == 0) {
|
||||
return 1;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
|
||||
int do_led (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
||||
{
|
||||
int state, i;
|
||||
|
||||
/* Validate arguments */
|
||||
if ((argc != 3)) {
|
||||
return cmd_usage(cmdtp);
|
||||
}
|
||||
|
||||
state = str_onoff(argv[2]);
|
||||
if (state < 0) {
|
||||
return cmd_usage(cmdtp);
|
||||
}
|
||||
|
||||
for (i = 0; led_commands[i].string; i++) {
|
||||
if ((strcmp("all", argv[1]) == 0) ||
|
||||
(strcmp(led_commands[i].string, argv[1]) == 0)) {
|
||||
if (led_commands[i].on) {
|
||||
if (state) {
|
||||
led_commands[i].on();
|
||||
} else {
|
||||
led_commands[i].off();
|
||||
}
|
||||
} else {
|
||||
__led_set(led_commands[i].mask, state);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* If we ran out of matches, print Usage */
|
||||
if (!led_commands[i].string && !(strcmp("all", argv[1]) == 0)) {
|
||||
return cmd_usage(cmdtp);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
U_BOOT_CMD(
|
||||
led, 3, 1, do_led,
|
||||
"led\t- ["
|
||||
#ifdef CONFIG_BOARD_SPECIFIC_LED
|
||||
#ifdef STATUS_LED_BIT
|
||||
"0|"
|
||||
#endif
|
||||
#ifdef STATUS_LED_BIT1
|
||||
"1|"
|
||||
#endif
|
||||
#ifdef STATUS_LED_BIT2
|
||||
"2|"
|
||||
#endif
|
||||
#ifdef STATUS_LED_BIT3
|
||||
"3|"
|
||||
#endif
|
||||
#endif
|
||||
#ifdef STATUS_LED_GREEN
|
||||
"green|"
|
||||
#endif
|
||||
#ifdef STATUS_LED_YELLOW
|
||||
"yellow|"
|
||||
#endif
|
||||
#ifdef STATUS_LED_RED
|
||||
"red|"
|
||||
#endif
|
||||
#ifdef STATUS_LED_BLUE
|
||||
"blue|"
|
||||
#endif
|
||||
"all] [on|off]\n",
|
||||
"led [led_name] [on|off] sets or clears led(s)\n"
|
||||
);
|
||||
Loading…
Reference in New Issue
Block a user