?? 44blib.c
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#include "..\include\44b.h"
#include "..\include\44blib.h"
#include "..\include\def.h"
#include "..\include\option.h"
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include <ctype.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//
volatile unsigned char *downPt;
unsigned int fileSize;
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<delayLoopCount;i++);
if(adjust==1)
{
rWTCON=((MCLK/1000000-1)<<8)|(2<<3);
i=0xffff-rWTCNT; // 1count/16us?????????//
delayLoopCount=8000000/(i*64); //400*100/(i*64/200) //
}
}
//------------------------PORTS------------------------------//
void Port_Init(void)
{
// CAUTION:Follow the configuration order for setting the ports.
// 1) setting value
// 2) setting control register
// 3) configure pull-up resistor.
//16bit data bus configuration
// PORT A GROUP
// 9 8 7 6 5 4 3 2 1 0
// A24 A23 A22 A21 A20 A19 A18 A17 A16 A0
// 0 1 1 1 1 1 1 1 1 1
rPCONA = 0x1ff;
// PORT B GROUP
// 10 9 8 7 6 5 4 3 2 1 0
// /CS5 /CS4 /CS3 /CS2 /CS1 GPB5 GPB4 /SRAS /SCAS SCLK SCKE
// EXT NIC USB IDE SMC NC NC Sdram Sdram Sdram Sdram
// ? ? ? ? ? Out Out ? ? ? ?
// 1 1 1 1 1 0 0 1 1 1 1
rPCONB = 0x1cf;
rPDATB = 0x7ff&~(1<<10);
// PORT C GROUP, BUSWIDTH=16
// 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
// NC NC Uart1 Uart1 NC NC NC NC NC NC NC NC out out out out
// ? ? ? ? ? ? ? ? ? ? ? ? * * * * *
// 00 00 11 11 00 00 01 01 00 00 00 00 01 01 01 01
rPDATC = 0xfc00;
rPCONC = 0x0FF5FF55;
// rPCONC = 0x0ff0ff55; // EduKit-II
// rPCONC = 0x0ff0ffff; // S3CEV40
rPUPC = 0x30ff; // PULL UP RESISTOR should be enabled to I/O
// PORT D GROUP
// BIT7 6 5 4 3 2 1 0
// VF OUT VLINE VCLK VD3 VD2 VD1 VD0
// 10 01 10 10 10 10 10 10
rPDATD = 0xbf;
rPCOND = 0x9aaa;
rPUPD = 0x0;
// These pins must be set only after CPU's internal LCD controller is enable
// PORT E GROUP
// 8 7 6 5 4 3 2 1 0
// CODECLK Out Out Out TOUT1 Out(Beep) RXD0 TXD0 ?
// * * * * * * *
// 10 01 01 01 10 01 10 10 00
rPDATE = 0x1ff;
rPCONE = 0x25668;
rPUPE = 0x6;
// PORT F GROUP
// 8 7 6 5 4 3 2 1 0
// IISCLK IISDI IISDO IISLRCK Out Out Input IICSDA IICSCL
// * * * * * * * * *
// 100 100 100 100 01 01 00 10 10
rPDATF = 0xe7;
rPCONF = 0x24914A; // PF3:LED4 PF4:LED3 PF2:nWait
// rPCONF = 0x252A; //S3CEV40
rPUPF = 0x0;
// PORT G GROUP
// 7 6 5 4 3 2 1 0
// INT7 INT6 INT5 INT4 INT3 INT2 INT1 INT0
// S3 S4 S5 S6 NIC IDE USB
// *
// 11 11 11 11 11 11 11 11
rPDATG = 0xff;
rPCONG = 0xffff;
rPUPG = 0x0; // should be enabled
rSPUCR = 0x7; // D15-D0 pull-up disable
// Non Cache area
rNCACHBE0 = ((Non_Cache_End>>12)<<16) | (Non_Cache_Start>>12);
// Low level default
rEXTINT = 0x0;
}
/************************* 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 rURXH1;
}
}
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 rURXH1;
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);
}
/******************** 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;
}
/************************* 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);
}
void Beep(int BeepStatus)
{
if (BeepStatus==0)
rPDATE=rPDATE|0x8;
else
rPDATE=rPDATE&0x1f7;
}
/************************* PLL ********************************/
void ChangePllValue(int mdiv,int pdiv,int sdiv)
{
rPLLCON=(mdiv<<12)|(pdiv<<4)|sdiv;
}
/************************* General Library **********************/
void Cache_Flush(void)
{
int i,saveSyscfg;
saveSyscfg=rSYSCFG;
rSYSCFG=SYSCFG_0KB;
for(i=0x10004000;i<0x10004800;i+=16)
{
*((int *)i)=0x0;
}
rSYSCFG=saveSyscfg;
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