mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-11-17 21:09:03 +00:00
7f48057b9e
The leds API did not work in some cases. E.g. with the following sequence: leds_off(LEDS_ALL); leds_toggle(LEDS_GREEN); leds_off(LEDS_ALL); the green LED was remaining on after the last call. This was caused by the toggle feature made synonymous with the invert feature, although it is unrelated. leds_toggle() is indeed supposed to toggle an LED, while leds_invert() is supposed to change the active level of an LED. However, all users of leds_invert() actually meant leds_toggle(), and the invert feature does not make sense in this module because it is not handy due to successive calls to leds_invert() changing the intended behavior, and hardware active levels should be managed in leds_arch_set() (e.g. by XORing the passed value with a hardware-specific constant before setting the output levels of the pins). Consequently, this change: - removes the leds_invert() function, - makes leds_toggle() behave as expected relatively to leds_off() / leds_on(), - sanitizes the code in the leds module. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2006, 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.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Minileds is intended to substitute the full leds package when only
|
|
* a small portion of the full functionality is required. It is
|
|
* intended to be syntactically compatible but with a simplified
|
|
* semantics. The semantic difference lies in not counting the number
|
|
* of leds_on and leds_off:s. It saves a substantial amount of RAM
|
|
* (820 bytes on a msp430).
|
|
*/
|
|
|
|
#include "contiki.h"
|
|
#include "dev/leds.h"
|
|
|
|
void
|
|
leds_init(void)
|
|
{
|
|
LEDS_PxDIR |= (LEDS_CONF_RED | LEDS_CONF_GREEN | LEDS_CONF_YELLOW);
|
|
LEDS_PxOUT |= (LEDS_CONF_RED | LEDS_CONF_GREEN | LEDS_CONF_YELLOW);
|
|
}
|
|
|
|
static const unsigned char l2p[LEDS_ALL + 1] = {
|
|
0,
|
|
LEDS_CONF_GREEN,
|
|
LEDS_CONF_YELLOW,
|
|
LEDS_CONF_YELLOW | LEDS_CONF_GREEN,
|
|
LEDS_CONF_RED,
|
|
LEDS_CONF_RED | LEDS_CONF_GREEN,
|
|
LEDS_CONF_RED | LEDS_CONF_YELLOW,
|
|
LEDS_CONF_RED | LEDS_CONF_YELLOW | LEDS_CONF_GREEN
|
|
};
|
|
|
|
|
|
void
|
|
leds_on(unsigned char leds)
|
|
{
|
|
LEDS_PxOUT &= ~l2p[leds & LEDS_ALL];
|
|
}
|
|
|
|
void
|
|
leds_off(unsigned char leds)
|
|
{
|
|
LEDS_PxOUT |= l2p[leds & LEDS_ALL];
|
|
}
|
|
|
|
void
|
|
leds_toggle(unsigned char leds)
|
|
{
|
|
LEDS_PxOUT ^= l2p[leds & LEDS_ALL];
|
|
}
|