📄 44blib.c
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#include "..\startup\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\def.h"
#include "..\startup\option.h"
#include <stdarg.h>
#include <string.h>
#include <stdlib.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//
#define SIO_START 0x08 //SIO Start
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<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
/* BIT 9 8 7 6 5 4 3 2 1 0 */
/* GPA9 GPA8 ADDR22 ADDR21 GPA5 ADDR19 ADDR18 ADDR17 ADDR16 ADDR0 */
/* 0, 0, 1, 1, 0, 1, 1, 1, 1, 1 */
/* GPA9->SMCALE*/
/* GPA8->SMCCLE*/
/* GPA5->SMCCE*/
/* GPE0->SMCRB*/
rPCONA = 0xdf;
// PORT B GROUP
/* BIT 10 9 8 7 6 5 4 3 2 1 0 */
/* /CS5 /CS4 /CS3 /CS2 /CS1 nWBE3 nWBE2 /SRAS /SCAS SCLK SCKE */
/* (Reserve) IDE USB FLASH SRAM No care No Care Sdram Sdram Sdram Sdram */
/* 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1 */
rPDATB = 0x7ff;
rPCONB = 0x7cf;
//PORT C GROUP
//BUSWIDTH=16 */
/* PC 15 14 13 12 11 10 9 8 */
/* O O RXD1 TXD1 I O nDREQ1 nDACK1(used as output IO) */
/* LCD_BK LCDDSP Uart1 Uart1 tchPen tchScrCS USB USB */
/* 01 01 11 11 00 01 00 01 */
/* PC 7 6 5 4 3 2 1 0*/
/* O O O I I I I I*/
/* VD4 VD5 VD6 VD7 key key key key*/
/* 11 11 11 11 00 00 00 00*/
rPDATC = 0x3fff; //All IO is high
rPCONC = 0x5f51ff00;
rPUPC = 0x3000; //PULL UP RESISTOR should be enabled to I/O
//PORT D GROUP for KeyBoard
/* PORT D GROUP(I/O OR LCD) */
/* BIT 7 6 5 4 3 2 1 0 */
/* I I I I O O O O */
/* 00 00 00 00 01 01 01 01 */
rPDATD= 0xff;
rPCOND= 0xaaaa;
rPUPD = 0x0;
//PORT E GROUP
/* Bit 8 7 6 5 4 3 2 1 0 */
/* CODECLK O O O O Res RXD0 TXD0 SMRB(I) */
/* 10 01 01 01 01 00 10 10 00 */
rPDATE = 0x1ff;
rPCONE = 0x25528;
rPUPE = 0x106;
//PORT F GROUP
/* Bit 8 7 6 5 4 3 2 1 0 */
/* SIOCLK SIORxD GPF6input SIOTxD Input Input Input IICSDA IICSCL */
/* 011 011 000 011 00 00 00 10 10 */
rPDATF = 0x0;
rPCONF = 0x1B0C0A;//0x24900a;
rPUPF = 0x0;//0x1e3;
//PORT G GROUP
/* BIT 7 6 5 4 3 2 1 0 */
/* INT7 INT6 INT5 INT4 INT3 INT2 INT1 INT0 */
/* 11 11 11 11 11 11 11 11 */
rPDATG = 0xff;
rPCONG = 0xffff;
rPUPG = 0x0; //should be enabled
rSPUCR=0x7; //D15-D0 pull-up disable
/*定义非Cache区*/
rNCACHBE0=((Non_Cache_End>>12)<<16)|(Non_Cache_Start>>12);
/*所有的外部硬件中断为低电平触发*/
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 data)
{
rPDATG=(rPDATG & 0x13f) | ((data & 0x3)<<6);
}
/************************* 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;
}
void init_SIO()
{
/*7 6 5 4 3 2 1:0 */
/*Internal clock,MSB mode,Transmit/Receive mode,rising edge clock,No action,Non hand-shaking mode,SIO interrupt mode*/
/*0 0 1 1 0 0 01*/
rSIOCON=0x31;
rSBRDR=15;//band rate = 60MHz/2/(15+1)=1.875MHz
rIVTCNT=7;//Intervals=60MHz/4/(7+1)=1.875MHz
}
unsigned char ReadSIOData()
{
// while(rSIOCON&SIO_START);//等待发送
return rSIODAT;
}
void SendSIOData(unsigned char data)
{
// while(rSIOCON&SIO_START);//等待发送
rI_ISPC=BIT_SIO;
rSIODAT=data;
rSIOCON|=SIO_START;
while(!(rINTPND&BIT_SIO));
rI_ISPC=BIT_SIO;
}
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