atm128hardware.h

来自「tinyos-2.x.rar」· C头文件 代码 · 共 158 行

//  $Id: atm128hardware.h,v 1.11 2008/09/20 00:10:18 idgay Exp $

/*                                                                     
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 *  Copyright (c) 2004-2005 Crossbow Technology, Inc.
 *  Copyright (c) 2002-2003 Intel Corporation.
 *  Copyright (c) 2000-2003 The Regents of the University  of California.    
 *  All rights reserved.
 *
 *  Permission to use, copy, modify, and distribute this software and its
 *  documentation for any purpose, without fee, and without written
 *  agreement is hereby granted, provided that the above copyright
 *  notice, the (updated) modification history and the author appear in
 *  all copies of this source code.
 *
 *  Permission is also granted to distribute this software under the
 *  standard BSD license as contained in the TinyOS distribution.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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 */

/*
 *  @author Jason Hill, Philip Levis, Nelson Lee, David Gay
 *  @author Martin Turon <[e-mail]>
 */

#ifndef _H_atmega128hardware_H
#define _H_atmega128hardware_H

#include <avr/io.h>
#if __AVR_LIBC_VERSION__ >= 10400UL
#include <avr/interrupt.h>
#else
#include <avr/interrupt.h>
#include <avr/signal.h>
#endif
#include <avr/wdt.h>
#include <avr/pgmspace.h>
#include "atm128const.h"

/* We need slightly different defs than SIGNAL, INTERRUPT */
#define AVR_ATOMIC_HANDLER(signame) \
  void signame() __attribute__ ((signal)) @atomic_hwevent() @C()

#define AVR_NONATOMIC_HANDLER(signame) \
  void signame() __attribute__ ((interrupt)) @hwevent() @C()

/* Macro to create union casting functions. */
#define DEFINE_UNION_CAST(func_name, from_type, to_type) \
  to_type func_name(from_type x) { \
  union {from_type f; to_type t;} c = {f:x}; return c.t; }

// Bit operators using bit number
#define SET_BIT(port, bit)    ((port) |= _BV(bit))
#define CLR_BIT(port, bit)    ((port) &= ~_BV(bit))
#define READ_BIT(port, bit)   (((port) & _BV(bit)) != 0)
#define FLIP_BIT(port, bit)   ((port) ^= _BV(bit))
#define WRITE_BIT(port, bit, value) \
   if (value) SET_BIT((port), (bit)); \
   else CLR_BIT((port), (bit))

// Bit operators using bit flag mask
#define SET_FLAG(port, flag)  ((port) |= (flag))
#define CLR_FLAG(port, flag)  ((port) &= ~(flag))
#define READ_FLAG(port, flag) ((port) & (flag))

/* Enables interrupts. */
inline void __nesc_enable_interrupt() @safe() {
    sei();
}
/* Disables all interrupts. */
inline void __nesc_disable_interrupt() @safe() {
    cli();
}

/* Defines data type for storing interrupt mask state during atomic. */
typedef uint8_t __nesc_atomic_t;
__nesc_atomic_t __nesc_atomic_start(void);
void __nesc_atomic_end(__nesc_atomic_t original_SREG);

#ifndef NESC_BUILD_BINARY
/* @spontaneous() functions should not be included when NESC_BUILD_BINARY
   is #defined, to avoid duplicate functions definitions wheb binary
   components are used. Such functions do need a prototype in all cases,
   though. */

/* Saves current interrupt mask state and disables interrupts. */
inline __nesc_atomic_t 
__nesc_atomic_start(void) @spontaneous() @safe()
{
    __nesc_atomic_t result = SREG;
    __nesc_disable_interrupt();
    asm volatile("" : : : "memory"); /* ensure atomic section effect visibility */
    return result;
}

/* Restores interrupt mask to original state. */
inline void 
__nesc_atomic_end(__nesc_atomic_t original_SREG) @spontaneous() @safe()
{
  asm volatile("" : : : "memory"); /* ensure atomic section effect visibility */
  SREG = original_SREG;
}
#endif

/* Defines the mcu_power_t type for atm128 power management. */
typedef uint8_t mcu_power_t @combine("mcombine");


enum {
  ATM128_POWER_IDLE        = 0,
  ATM128_POWER_ADC_NR      = 1,
  ATM128_POWER_EXT_STANDBY = 2,
  ATM128_POWER_SAVE        = 3,
  ATM128_POWER_STANDBY     = 4,
  ATM128_POWER_DOWN        = 5, 
};

/* Combine function.  */
mcu_power_t mcombine(mcu_power_t m1, mcu_power_t m2) @safe() {
  return (m1 < m2)? m1: m2;
}

/* Floating-point network-type support.
   These functions must convert to/from a 32-bit big-endian integer that follows
   the layout of Java's java.lang.float.floatToRawIntBits method.
   Conveniently, for the AVR family, this is a straight byte copy...
*/

typedef float nx_float __attribute__((nx_base_be(afloat)));

inline float __nesc_ntoh_afloat(const void *COUNT(sizeof(float)) source) @safe() {
  float f;
  memcpy(&f, source, sizeof(float));
  return f;
}

inline float __nesc_hton_afloat(void *COUNT(sizeof(float)) target, float value) @safe() {
  memcpy(target, &value, sizeof(float));
  return value;
}

#endif //_H_atmega128hardware_H