system.c

来自「本程序为ST公司开发的源代码」· C语言 代码 · 共 78 行

/*____________________________________________________________________________
| FILE:         system.c
| PROJECT:      ACCORDO+
| SW-COMPONENT: 
|_____________________________________________________________________________
| DESCRIPTION:  system init functions
|_____________________________________________________________________________
| COPYRIGHT:    (c) 2005 STMicroelectronics, (APG_SWD) Arzano (ITALY)
| HISTORY:
| Date      | Modification               | Author
|_____________________________________________________________________________
| 05.11.02  | Initial revision           | M. De Martino
|____________________________________________________________________________*/

#if	(OS20_MALLOC == 1)
#include "system.h"
#endif

#ifdef __cplusplus
extern "C" {
#endif

/************************************************************************
|defines and macros (scope: module-local)
|-----------------------------------------------------------------------*/

/************************************************************************
|typedefs (scope: module-local)
|-----------------------------------------------------------------------*/

/************************************************************************
| variable definition (scope: global)
|-----------------------------------------------------------------------*/
#if	(OS20_MALLOC == 1)
volatile tU32 *HEAP_Base;
volatile tU32 *HEAP_Limit;
volatile tU32 HEAP_Len;
#endif	
/************************************************************************
| variable definition (scope: module-local)
|-----------------------------------------------------------------------*/

/************************************************************************
|function prototype (scope: module-local)
|-----------------------------------------------------------------------*/

/************************************************************************
|function implementation (scope: module-local)
|-----------------------------------------------------------------------*/

/************************************************************************
|function implementation (scope: global)
|-----------------------------------------------------------------------*/

#if	(OS20_MALLOC == 1)
tVoid SYS_Init (tVoid)
{    
	tUInt heapTop, heapBase;
	
	// Setup HEAP dimension
	HEAP_Base = (tU32*)HEAP_Base_Ptr;
	HEAP_Limit = (tU32*)HEAP_Limit_Ptr;
	HEAP_Len = HEAP_Length;
		
	// Init Malloc 
	heapBase = (tU32)HEAP_Base;
	heapTop = heapBase + (tU32)HEAP_Len;
	
	_init_alloc ((unsigned)heapBase, (unsigned)heapTop);
}
#endif

#ifdef __cplusplus
}
#endif

/* End of file */