?? 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 Startextern 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 = 0x5f11ff00; 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 /*定義非Cache區(qū)*/ rNCACHBE0=((Non_Cache_End>>12)<<16)|(Non_Cache_Start>>12); /*所有的外部硬件中斷為低電平觸發(fā)*/ 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){ rPDATE=(rPDATE & 0x13f) | ((data & 0x03)<<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);//等待發(fā)送 return rSIODAT;}void SendSIOData(unsigned char data){// while(rSIOCON&SIO_START);//等待發(fā)送 rI_ISPC=BIT_SIO; rSIODAT=data; rSIOCON|=SIO_START; while(!(rINTPND&BIT_SIO)); rI_ISPC=BIT_SIO;}?? 快捷鍵說明
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