atm128hardware.h

来自「tinyos-2.0源代码！转载而已！要的尽管拿！」· C头文件 代码 · 共 133 行

//  $Id: atm128hardware.h,v 1.1.2.6 2006/02/17 22:51:18 idgay Exp $

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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>
#include <avr/signal.h>
#include <avr/interrupt.h>
#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() {
    sei();
}
/* Disables all interrupts. */
inline void __nesc_disable_interrupt() {
    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()
{
    __nesc_atomic_t result = SREG;
    __nesc_disable_interrupt();
    return result;
}

/* Restores interrupt mask to original state. */
inline void 
__nesc_atomic_end(__nesc_atomic_t original_SREG) @spontaneous()
{
  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) {
  return (m1 < m2)? m1: m2;
}

#endif //_H_atmega128hardware_H