contiki/apps/shell/shell-blink.c

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/*
* Copyright (c) 2008, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* $Id: shell-blink.c,v 1.1 2008/02/04 23:42:17 adamdunkels Exp $
*/
/**
* \file
* A brief description of what this file is.
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "contiki.h"
#include "shell.h"
#include "dev/leds.h"
#include <stdio.h>
/*---------------------------------------------------------------------------*/
PROCESS(shell_blink_process, "blink");
SHELL_COMMAND(blink_command,
"blink",
"blink [num]: blink LEDs ([num] times)",
&shell_blink_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_blink_process, ev, data)
{
static struct etimer etimer;
static int i, num, on = 0;
const char *nextptr;
PROCESS_EXITHANDLER(if(on) { leds_toggle(LEDS_ALL); } );
PROCESS_BEGIN();
if(data != NULL) {
num = shell_strtolong(data, &nextptr);
if(nextptr != data) {
etimer_set(&etimer, CLOCK_SECOND / 2);
for(i = 0; i < num; ++i) {
leds_toggle(LEDS_ALL);
on = 1;
PROCESS_WAIT_UNTIL(etimer_expired(&etimer));
etimer_reset(&etimer);
leds_toggle(LEDS_ALL);
on = 0;
PROCESS_WAIT_UNTIL(etimer_expired(&etimer));
etimer_reset(&etimer);
}
PROCESS_EXIT();
}
}
while(1) {
struct shell_input *input;
PROCESS_WAIT_EVENT();
if(ev == PROCESS_EVENT_TIMER && data == &etimer) {
if(on) {
leds_toggle(LEDS_ALL);
on = 0;
}
} else if(ev == shell_event_input) {
input = data;
if(input->len1 + input->len2 == 0) {
if(on) {
leds_toggle(LEDS_ALL);
on = 0;
}
PROCESS_EXIT();
}
shell_output(&blink_command,
input->data1, input->len1,
input->data2, input->len2);
if(on == 0) {
leds_toggle(LEDS_ALL);
on = 1;
}
etimer_set(&etimer, CLOCK_SECOND / 16);
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
void
shell_blink_init(void)
{
shell_register_command(&blink_command);
}
/*---------------------------------------------------------------------------*/