tk_thrdx.h

在ARM7和UC/OSII的平台上实现了GPS自动报站的功能,涉及GPS模块LEA_4S的驱动,位置速寻算法,语音芯片ISD4004的录放音驱动,LED页面管理等等.从启动代码到操作系统的移植以及到业

/*
 * FILENAME: tk_thrdx.h
 *
 * Copyright  2000 By InterNiche Technologies Inc. All rights reserved
 *
 * Definitions to map NicheTask "TK_" macros to Express Logic Thread-X RTOS
 *
 * MODULE: MISCLIB
 *
 * PORTABLE: yes (within Thread-X systems)
 */

#ifndef TK_THRDX_H
#define TK_THRDX_H

#ifndef THREADX
#error - must define THREADX in ipport.h to use this file
#endif

/* the threadX API file must be in the include path */

#define     TX_DISABLE_ERROR_CHECKING  1
#include "tx_api.h"


/* Define the ThreadX object control TK_ macros...  */


/* define the default priority for all net related tasks */
#define  NET_PRIORITY   24 /* all net tasks get a fairly low priority */


/* macros for task type, entry, and name */
#define  TK_ENTRY(name)      void  name(ULONG  parm)
#define  TK_OBJECT(name)     TX_THREAD   name
#define  TK_OBJECT_PTR(name) TX_THREAD * name
#define  TK_OBJECT_REF       TK_OBJECT_PTR
#define  TK_ENTRY_PTR(name)  void(*name)(ULONG)
#define  TK_THIS             tx_thread_identify()
#define  TK_SLEEP(count)     tx_thread_sleep(count)

#ifndef  TK_RETURN_ERROR
#define  TK_RETURN_ERROR()    return
#endif
#ifndef  TK_RETURN_OK
#define  TK_RETURN_OK()    return
#endif


/*
 * synchronization primitives
 * 
 * Need one or the other of LOCK_NET_RESOURCE/UNLOCK_NET_RESOURCE and
 * ENTER_CRIT_SECTION/EXIT_CRIT_SECTION.  These should be implementable
 * as either functions or macros, so we allow e.g. ipport.h_h to 
 * override these definitions by defining the names as macros.
 * ThreadX targets generally use LOCK_NET_RESOURCE/UNLOCK_NET_RESOURCE
 * so we default to function declaractions for them.
 *
 */
#ifndef LOCK_NET_RESOURCE
void LOCK_NET_RESOURCE(void * semaphore);
#endif
#ifndef UNLOCK_NET_RESOURCE
void UNLOCK_NET_RESOURCE(void * semaphore);
#endif
#ifndef ENTER_CRIT_SECTION
#define  ENTER_CRIT_SECTION(p)
#endif
#ifndef EXIT_CRIT_SECTION
#define  EXIT_CRIT_SECTION(p)
#endif

/* set up pointers to threadX semaphores as void * so we don't
 * have to include tx_api.h in every file in the build... 
 */
#ifndef NET_RESID
extern   void *      net_task_sem_ptr;
#define  NET_RESID   (net_task_sem_ptr)
#endif
#ifndef RXQ_RESID
extern   void *      receiveq_sem_ptr;
#define  RXQ_RESID   (receiveq_sem_ptr)
#endif
#ifndef FREEQ_RESID
extern   void *      freeq_sem_ptr;
#define  FREEQ_RESID (freeq_sem_ptr)
#endif

/* map tk_yield to ThreadX */
#ifdef TX_DISABLE_ERROR_CHECKING
#define  tk_yield    _tx_thread_relinquish   /* plain vanilla version */
#else
#define  tk_yield    _txe_thread_relinquish  /* the error check version */
#endif

#define  THREADX_SEMAPHORE    1

/* declare tasks which need to be accessed by system code */
extern   TX_THREAD   to_pingcheck;
extern   TX_THREAD   to_netmain;
extern   TX_THREAD   to_emailer;
extern   TX_THREAD   to_ftpclnt;


/* map TK_ macros to threadX: */
#define  TK_BLOCK()          tx_thread_suspend(tx_thread_identify())

/* (Id) is always of type TK_OBJECT_PTR */
#define  TK_WAKE(Id)         tx_thread_resume(Id)

/* (ev) is always of type TK_OBJECT_REF */
#define  TK_WAKE_EVENT(ev)   tx_thread_resume(ev)

/* define macros to  wake net task on packet receipt, etc */
#define  SignalPktDemux()  tx_thread_resume(&to_netmain)
#define  SignalEmailTask() tx_thread_resume(&to_emailer)
#define  SignalFtpClient() tx_thread_resume(&to_ftpclnt)

#endif  /* TK_THRDX_H */