plat_dep.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 msp430/include/plat_dep.h
 * @brief MSP430 Platform specific functions used in the kernel
 *
 */

#ifndef __PLAT_DEP_H__
#define __PLAT_DEP_H__

#include <sys/types.h>
#include <signal.h>
#include <io.h>

#include "mos.h"

// 10k of RAM
/** @brief Total bytes of memory */
#define MEMORY_SIZE 10240
#define ARCH_PROGMEM



#define SETUP_SOFT_INT() do{     \
   P2DIR |=  (1 << 5);           \
   P2SEL |=  (1 << 5);           \
   P2IES &= ~(1 << 5);           \
   P2IE  |=  (1 << 5);           \
}while(0)

#define DISABLE_SOFT_INT() P2IFG &= ~(1 << 5)
#define DO_SOFT_INT()      P2IFG |=  (1 << 5)

// not necessary for msp430
#define WAIT_FOR_ASYNC_UPDATE()

// stack pointer type
typedef uint16_t stackval_t;

// size of the SR -- used for mos_(enable|disable)_ints();
typedef uint16_t handle_t;

// minimum stack size
#define PLAT_STACK_MIN 128

#define ENABLE_INTS() eint()
#define DISABLE_INTS() dint()

#define PLAT_INIT()

#define PRE_KERNEL_SLEEP()
#define POST_KERNEL_SLEEP()

// turn off TimerA
#define DISABLE_TSLICE_TIMER() TACTL &= ~(MC_3)
// start TimerA
#define ENABLE_TSLICE_TIMER() TACTL |= MC_1

#define TSLICE_TIMER_VALUE (TAR)
// make sure the interrupt was triggered
// because of a capture
#define TSLICE_TIMER_EXPIRED (TAIV & 0x02)

#define SET_TSLICE_TIMER_VALUE(value) TAR = value
#define SET_TSLICE_OCR_VALUE(value) TACCR0 = TACCR1 = value

// turn off TimerB
#define DISABLE_SLEEP_TIMER() TBCTL &= ~(MC_3)
// start TimerB
#define ENABLE_SLEEP_TIMER() TBCTL |= MC_1
#define SET_SLEEP_TIMER_VALUE(time) TBR = time
#define SET_SLEEP_OCR_VALUE(value) TBCCR0 = TBCCR1 = value
// make sure the interrupt was triggered
// because of a capture
#define SLEEP_TIMER_EXPIRED (TBIV & 0x02)

// msp430 doesn't need to do anything special
// to enable low power modes
#define ENABLE_SLEEP()
#define ENABLE_IDLE()

// set low power mode bits in the SR to sleep
#define SLEEP() _BIS_SR(LPM3_bits)
#define IDLE() _BIS_SR(LPM0_bits)

#define SOFT_INT_HEADER()   interrupt (PORT2_VECTOR) soft_trig_int()
#define SLEEP_INT_HEADER()  interrupt (TIMERB1_VECTOR) sleep_wake_int()
#define TSLICE_INT_HEADER() interrupt (TIMERA1_VECTOR) tslice_sig_int()

/** @brief Initialize the hardware timer
 * This timer is used for the kernel time slice.
 */
void kernel_timer_init(void);

/** @brief initialize the timer used for sleeping
 *
 */
void sleep_timer_init(void);


/** @brief enables interrupts
 *
 */
#define mos_enable_ints(int_handle) WRITE_SR(int_handle)

/** @brief disables interrupts
 *
 */
handle_t mos_disable_ints(void);


#define GET_SP(sp) {		\
      asm volatile(		\
	 "mov.w r1, %0\n\t"	\
	 :"=r" (sp) : );	\
	 }


#define srandom(seed) srand(seed)

#define TIMESLICE_20_MS 655


#endif