IIC.rar_AT24C08_IIC

/************************************************ * NAME : 44BLIB.C * ************************************************/ // Revision History // Delay() #include "..\inc\44b.h" #include "..\inc\44blib.h" #include "..\inc\def.h" #include "..\inc\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 extern char Image$$RW$$Limit[]; void *mallocPt=Image$$RW$$Limit; /************************* 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); //MCLK/1M,Watch-dog disable,1/64,interrupt disable,reset disable rWTDAT=0xffff;//for first update rWTCNT=0xffff;//resolution=64us @any MCLK rWTCON=((MCLK/1000000-1)<<8)|(2<<3)|(1<<5); //Watch-dog timer start } for(;time>0;time--) for(i=0;i<delayLoopCount;i++); if(adjust==1) { rWTCON=((MCLK/1000000-1)<<8)|(2<<3);//Watch-dog timer stop i=0xffff-rWTCNT; //1count->64us, 200*400 cycle runtime = 64*i us delayLoopCount=8000000/(i*64); //200*400:64*i=1*x:100 -> x=80000*100/(64*i) } } /************************* PORTS ****************************/ void Port_Init(void) { //SMDK41100 B/D Status //LED D5 D6 // PB9 PB10 //S/W S4 S5 // PG5 PG4 //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 //ADDR24 ADDR23 ADDR22 ADDR21 ADDR20 ADDR19 ADDR18 ADDR17 ADDR16 ADDR0 // 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 rPCONA=0x3ff; //PORT B GROUP //OUT OUT nGCS3 nGCS2 nGCS1 nWBE3 nWBE2 nSRAS nSCAS SCLK SCKE // 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1 rPDATB=0x600; rPCONB=0x1ff; //PORT C GROUP #if (BUSWIDTH==32) //D31 D30 D29 D28 D27 D26 D25 D24 D23 D22 D21 D20 D19 D18 D17 D16 // 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 rPCONC=0xaaaaaaaa; rPUPC=0xffff; #else //BUSWIDTH=16 //PORT C GROUP //Input or Output rPDATC=0x5400; //rPCONC=0x11100000; rPCONC=0x0f000000; rPUPC=0xfc00; #endif //PORT D GROUP //VFRAME VM VLINE VCLK VD3 VD2 VD1 VD0 // 10,10, 10, 10, 10, 10, 10, 10 rPCOND=0xaaaa; rPUPD=0xff; //PORT E GROUP //PE0:FOUT, PE1:TxD0, PE2:RxD0, athers input // 11 10, 10, 0 rPDATE = 0x157; //Beep = 10 rPCONE = 0x5569; rPUPE = 0xff; rPDATF = 0x0; rPCONF = 0x24900a|(01<<8); rPUPF = 0x1d3; //PORT G GROUP //All input // 0x0 rPCONG=0x0; rPUPG=0x0; rPDATG=0x0; rSPUCR=0x3; //pull-up disable rEXTINT=0x22222220; //All EINT[7:0] will be falling edge triggered. } /************************* 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) { rPDATB=(rPDATB & 0x1ff) | ((data & 0x3)<<9); } /************************* 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); } /************************* 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