IIC.rar_44b0 iic

#include "44b.h" #include "44blib.h" #include "def.h" #include "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 = 0x3ff; rPCONB = 0x3cf; //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);