led.h

MANTIS是由科罗拉多大学开发的传感器网络嵌入式操作系统。 这是mantis的0.9.5版本的源码。

//  This file is part of MANTIS OS, Operating System
//  See http://mantis.cs.colorado.edu/
//
//  Copyright (C) 2003,2004,2005 University of Colorado, Boulder
//
//  This program is free software; you can redistribute it and/or
//  modify it under the terms of the mos license (see file LICENSE)

/** @file sys/include/led.h
 * @brief Control of the onboard leds for a sensor node.
 * @author Jeff Rose
 * @date 01/24/2003
 */

#ifndef LED_H_
#define LED_H_

#define NUM_LEDS        3

#ifndef PLATFORM_LINUX

#include "mos.h"

/* Specify the port, data direction register and pin mask. */
#ifdef ARCH_AVR
#define LED_PORT PORTA
#define LED_DIR DDRA
#define LED_MASK 0x07

#define LED_ON(led) LED_PORT &= ~(1<<led)
#define LED_OFF(led) LED_PORT |= (1<<led)
#define LED_DISP(val) LED_PORT = ~val


#elif PLATFORM_TELOSB
#define LED_PORT P5OUT
#define LED_DIR P5DIR
#define LED_MASK ((1 << 4) | (1 << 5) | (1 << 6))

#define LED_ON(led)   LED_PORT &= ~(1 << (4+led))
#define LED_OFF(led)  LED_PORT |= (1 << (4+led))
#define LED_DISP(val) do{                \
   LED_PORT |= LED_MASK;                 \
   LED_PORT &= ~((val << 4) & LED_MASK); \
  }while(0)
   
#else
#error "Undfined LEDs for this platform"
#endif

#define LED_INIT_HARDWARE() LED_DIR |= LED_MASK;

#else

#include "gevent.h"
#include "node_id.h"

/* Provide the same interface in XMOS.  
 * Changing LEDs sends an event to the simulator.
 */
#define LED_ON(led)	do {				   \
      gevent_send(LED_EVENT, "ii", "%i LED_ON %x\n",	   \
		  mos_node_id_get(), state|(1<<led));	   \
   } while(0)

#define LED_OFF(led)	do {				    \
      gevent_send(LED_EVENT, "ii", "%i LED_OFF %x\n",	    \
		  mos_node_id_get(), state&~(1<<led));	    \
   } while(0)

#define LED_DISP(val)	do {					\
      gevent_send(LED_EVENT, "ii", "%i LED_DISP %x\n",		\
		  mos_node_id_get(), val);			\
   } while(0)
#endif

/** @brief Init the leds. */
void led_init(void);

/** @briefGet the number of leds.
 * @return Number of leds
 */
uint8_t mos_led_get_num_leds(void);

/** @brief Turn on a given led.
 * @param led Led to turn on
 */
void mos_led_on(uint8_t led);

/** @brief Turn off a given led.
 * @param led Led to turn off
 */
void mos_led_off(uint8_t led);

/** @brief Toggle a given led.
 * @param led Led to toggle
 */
void mos_led_toggle(uint8_t led);

/** @brief Blink the LED twice
 */
void mos_led_blink(uint8_t led);

/** @brief Display a given led.
 * @param display_value Display value
 */
void mos_led_display(uint8_t display_value);

#endif