www.pudn.com > hf44b0_TEST.rar > 44blib.c

/************************************************ 
 * NAME    : 44BLIB.C				* 
 * Version : 17.APR.00				* 
 ************************************************/ 
#include "..\inc\44b.h" 
#include "..\inc\44blib.h" 
#include "..\inc\def.h" 
#include "..\inc\option.h" 
 
#include  
#include  
#include  
#include  
#include  
 
#define STACKSIZE    0xa00 //SVC satck size(do not use user stack) 
#define HEAPEND     (_ISR_STARTADDRESS-STACKSIZE-0x500) // = 0xc7ff000 
	//SVC Stack Area:0xc(e)7ff000-0xc(e)7ffaff 
 
extern char Image$$RW$$Limit[]; 
 
void *mallocPt=Image$$RW$$Limit; 
int atoi(const char *str) 
{ 
  int i,j=0; 
  for( i = 0;str[i]!='\0';i++) 
  { 
   j=j*10+( str[i] - '0'); 
  } 
  return j; 
} 
 
 
/************************* SYSTEM *************************/ 
static int delayLoopCount=400; 
 
void Delay(int time) 
// time=0: adjust the Delay function by WatchDog timer. 
// time>0: the number of loop time 
// 100us resolution. 
{ 
    int i,adjust=0; 
    if(time==0) 
    { 
	time=200; 
	adjust=1; 
	delayLoopCount=400; 
	rWTCON=((MCLK/1000000-1)<<8)|(2<<3);  // 1M/64,Watch-dog,nRESET,interrupt disable 
	rWTDAT=0xffff; 
	rWTCNT=0xffff;	  
	rWTCON=((MCLK/1000000-1)<<8)|(2<<3)|(1<<5); // 1M/64,Watch-dog enable,nRESET,interrupt disable  
    } 
    for(;time>0;time--) 
	for(i=0;i0); //to align 4byte 
 
    if( (int)mallocPt > HEAPEND ) 
    { 
	mallocPt=returnPt; 
	return NULL; 
    } 
    return returnPt; 
} 
void free(void *pt) 
{ 
    mallocPt=pt; 
} 
 
 
void Cache_Flush(void) 
{ 
    int i,saveSyscfg; 
     
    saveSyscfg=rSYSCFG; 
 
    rSYSCFG=SYSCFG_0KB; 		       
    for(i=0x10004000;i<0x10004800;i+=16)     
    {					    
	*((int *)i)=0x0;		    
    } 
    rSYSCFG=saveSyscfg; 			     
} 
/************************* Timer ********************************/ 
 
void Timer_Start(int divider)  //0:16us,1:32us 2:64us 3:128us 
{ 
    rWTCON=((MCLK/1000000-1)<<8)|(divider<<3); 
    rWTDAT=0xffff; 
    rWTCNT=0xffff;    
 
    // 1/16/(65+1),nRESET & interrupt  disable 
    rWTCON=((MCLK/1000000-1)<<8)|(divider<<3)|(1<<5);	 
} 
 
 
int Timer_Stop(void) 
{ 
//    int i; 
    rWTCON=((MCLK/1000000-1)<<8); 
    return (0xffff-rWTCNT); 
}