www.pudn.com > flashfat16.rar > 44blib.c
#include
#include
#include
#include
#include
#include "..\target\44b.h"
#include "..\target\44blib.h"
#include "..\target\def.h"
#include "..\target\option.h"
#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[];
volatile unsigned char *downPt;
unsigned int fileSize;
void *mallocPt=Image$$RW$$Limit;
void (*restart)(void)=(void (*)(void))0x0;
void (*run)(void)=(void (*)(void))DOWNLOAD_ADDRESS;
//--------------------------------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;i>12)<<16)|(Non_Cache_Start>>12);
/*均为低电平触发,Exint3设置为上升沿触发----modify at 04-12-11*/
rEXTINT=0x0|(1<<14);
//Misc
//USBN9603's A0 pin -> CPU's A1
//IDE's CS0 -> CPU's A2
//IDE's CS1 -> CPU's A1
//IDE's A2 -> CPU's A3
//IDE's A1 -> CPU's A5
//IDE's A0 -> CPU's A4
}
/************************* UART ****************************/
static int whichUart=0;
void Uart_Init(int mclk,int baud)
{
int i;
if(mclk==0)
mclk=MCLK;
rUFCON0=0x0; //FIFO disable
rUFCON1=0x0;
rUMCON0=0x0;
rUMCON1=0x0;
//UART0
rULCON0=0x3; //Normal,No parity,1 stop,8 bit
rUCON0=0x245; //rx=edge,tx=level,disable timeout int.,enable rx error int.,normal,interrupt or polling
rUBRDIV0=( (int)(mclk/16./baud + 0.5) -1 );
//UART1
rULCON1=0x3;
rUCON1=0x245;
rUBRDIV1=( (int)(mclk/16./baud + 0.5) -1 );
for(i=0;i<100;i++);
}
void Uart_Select(int ch)
{
whichUart=ch;
}
void Uart_TxEmpty(int ch)
{
if(ch==0)
while(!(rUTRSTAT0 & 0x4)); //wait until tx shifter is empty.
else
while(!(rUTRSTAT1 & 0x4)); //wait until tx shifter is empty.
}
char Uart_Getch(void)
{
if(whichUart==0)
{
while(!(rUTRSTAT0 & 0x1)); //Receive data read
return RdURXH0();
}
else
{
while(!(rUTRSTAT1 & 0x1)); //Receive data ready
return RdURXH1();
}
}
char Uart_WaiteKey(unsigned long timeout, int *error_p)
{
char c;
int state;
if(whichUart==0)
{
while(!(rUTRSTAT0 & 0x1)) //Receive data ready
{
if(!timeout)
break;
else
timeout--;
}
if(timeout==0)
{
c=0;
state=-1;
}
else
{
c=RdURXH0();
state=0;
}
}
else
{
while(!(rUTRSTAT1 & 0x1)) //Receive data ready
{
if(!timeout)
break;
else
timeout--;
}
if(timeout==0)
{
c=0;
state=-1;
}
else
{
c=RdURXH0();
state=0;
}
}
*error_p=state;
return(c);
}
char Uart_GetKey(void)
{
if(whichUart==0)
{
if(rUTRSTAT0 & 0x1) //Receive data ready
return RdURXH0();
else
return 0;
}
else
{
if(rUTRSTAT1 & 0x1) //Receive data ready
return RdURXH1();
else
return 0;
}
}
void Uart_GetString(char *string)
{
char *string2=string;
char c;
while((c=Uart_Getch())!='\r')
{
if(c=='\b')
{
if( (int)string2 < (int)string )
{
Uart_Printf("\b \b");
string--;
}
}
else
{
*string++=c;
Uart_SendByte(c);
}
}
*string='\0';
Uart_SendByte('\n');
}
int Uart_GetIntNum(void)
{
char str[30];
char *string=str;
int base=10;
int minus=0;
int lastIndex;
int result=0;
int i;
Uart_GetString(string);
if(string[0]=='-')
{
minus=1;
string++;
}
if(string[0]=='0' && (string[1]=='x' || string[1]=='X'))
{
base=16;
string+=2;
}
lastIndex=strlen(string)-1;
if( string[lastIndex]=='h' || string[lastIndex]=='H' )
{
base=16;
string[lastIndex]=0;
lastIndex--;
}
if(base==10)
{
result=_atoi_(string);
result=minus ? (-1*result):result;
}
else
{
for(i=0;i<=lastIndex;i++)
{
if(isalpha(string[i]))
{
if(isupper(string[i]))
result=(result<<4)+string[i]-'A'+10;
else
result=(result<<4)+string[i]-'a'+10;
}
else
{
result=(result<<4)+string[i]-'0';
}
}
result=minus ? (-1*result):result;
}
return result;
}
void Uart_SendByte(int data)
{
if(whichUart==0)
{
if(data=='\n')
{
while(!(rUTRSTAT0 & 0x2));
Delay(10); //because the slow response of hyper_terminal
WrUTXH0('\r');
}
while(!(rUTRSTAT0 & 0x2)); //Wait until THR is empty.
Delay(10);
WrUTXH0(data);
}
else
{
if(data=='\n')
{
while(!(rUTRSTAT1 & 0x2));
Delay(10); //because the slow response of hyper_terminal
rUTXH1='\r';
}
while(!(rUTRSTAT1 & 0x2)); //Wait until THR is empty.
Delay(10);
rUTXH1=data;
}
}
void Uart_SendString(char *pt)
{
while(*pt)
Uart_SendByte(*pt++);
}
//if you don't use vsprintf(), the code size is reduced very much.
void Uart_Printf(char *fmt,...)
{
va_list ap;
char string[256];
va_start(ap,fmt);
vsprintf(string,fmt,ap);
Uart_SendString(string);
va_end(ap);
}
int Uart_RxReady(void)
{
if(whichUart)
return (rUTRSTAT1 & 0x1); //Receive data ready
else
return (rUTRSTAT0 & 0x1); //Receive data ready
}
/******************** S3C44B0X EV. BOARD LED **********************/
void Led_Display(int LedStatus)
{
if((LedStatus&0x01)==0x01)
rPDATE=rPDATE&0x17f;
else
rPDATE=rPDATE|0x80;
if((LedStatus&0x02)==0x02)
rPDATE=rPDATE&0x1bf;
else
rPDATE=rPDATE|0x40;
if((LedStatus&0x04)==0x04)
rPDATE=rPDATE&0x1df;
else
rPDATE=rPDATE|0x20;
if((LedStatus&0x08)==0x08)
rPDATE=rPDATE&0x1ef;
else
rPDATE=rPDATE|0x10;
}
void Beep(int BeepStatus)
{
if (BeepStatus==0)
rPDATE=rPDATE|0x8;
else
rPDATE=rPDATE&0x1f7;
}
/************************* 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)
{
rWTCON=((MCLK/1000000-1)<<8);
return (0xffff-rWTCNT);
}
/************************* PLL ********************************/
void ChangePllValue(int mdiv,int pdiv,int sdiv)
{
rPLLCON=(mdiv<<12)|(pdiv<<4)|sdiv;
}
/************************* General Library **********************/
void * _malloc_(unsigned nbyte)
/*Very simple; Use _malloc_() & _free_() like Stack*/
//void *mallocPt=Image$$RW$$Limit;
{
void *returnPt=mallocPt;
mallocPt= (int *)mallocPt+nbyte/4+((nbyte%4)>0); //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;
}
unsigned char Readkey(void)
{
unsigned char ch1,ch2;
ch1=(rPDATG&0xf0);
//Uart_Printf("\n key=%d",ch1);
if(ch1!=0xf0)
{
Delay(10);
ch2=(rPDATG&0xf0);
//Uart_Printf("\n key=%d",ch2);
if(ch1==ch2)//Confirm the key
{
Beep(0x01);
Delay(20);
while((rPDATG&0xf0)!=0xf0);
Beep(0x00);
if (ch1==0x70)
return('S');
else if(ch1==0xb0)
return('C');
else if(ch1==0xd0)
return('E');
else if(ch1==0xe0)
return('O');
}
}
return(0);
}
void _disable_(void)
{
rI_ISPC=BIT_EINT0;
rINTMSK|=(BIT_EINT0|BIT_GLOBAL);//0x01<<26;
//rINTCON=0x2|rINTCON;
}
void _enable_(void)
{
rI_ISPC=BIT_EINT0;
rINTMSK&=(~(BIT_EINT0|BIT_GLOBAL));
//rINTCON=0xfffffff9&rINTCON;
}
int _atoi_(char *str)
{
int n=0;
char c=1;
while((c=*str++)&&(c>=0x30)&&(c<=0x39))
n = n*10 + c-'0';
return(n);
}