testeeprom.i

AVR开发板电路图/PCB/示范程序

// CodeVisionAVR C Compiler
// (C) 1998-2001 Pavel Haiduc, HP InfoTech S.R.L.

// I/O registers definitions for the ATmega16


#pragma used+
sfrb TWBR=0;
sfrb TWSR=1;
sfrb TWAR=2;
sfrb TWDR=3;
sfrb ADCL=4;
sfrb ADCH=5;
sfrw ADCW=4;      // 16 bit access
sfrb ADCSRA=6;
sfrb ADMUX=7;
sfrb ACSR=8;
sfrb UBRRL=9;
sfrb UCSRB=0xa;
sfrb UCSRA=0xb;
sfrb UDR=0xc;
sfrb SPCR=0xd;
sfrb SPSR=0xe;
sfrb SPDR=0xf;
sfrb PIND=0x10;
sfrb DDRD=0x11;
sfrb PORTD=0x12;
sfrb PINC=0x13;
sfrb DDRC=0x14;
sfrb PORTC=0x15;
sfrb PINB=0x16;
sfrb DDRB=0x17;
sfrb PORTB=0x18;
sfrb PINA=0x19;
sfrb DDRA=0x1a;
sfrb PORTA=0x1b;
sfrb EECR=0x1c;
sfrb EEDR=0x1d;
sfrb EEARL=0x1e;
sfrb EEARH=0x1f;
sfrw EEAR=0x1e;   // 16 bit access
sfrb UBRRH=0x20;
sfrb UCSRC=0X20;
sfrb WDTCR=0x21;
sfrb ASSR=0x22;
sfrb OCR2=0x23;
sfrb TCNT2=0x24;
sfrb TCCR2=0x25;
sfrb ICR1L=0x26;
sfrb ICR1H=0x27;
sfrb OCR1BL=0x28;
sfrb OCR1BH=0x29;
sfrw OCR1B=0x28;  // 16 bit access
sfrb OCR1AL=0x2a;
sfrb OCR1AH=0x2b;
sfrw OCR1A=0x2a;  // 16 bit access
sfrb TCNT1L=0x2c;
sfrb TCNT1H=0x2d;
sfrw TCNT1=0x2c;  // 16 bit access
sfrb TCCR1B=0x2e;
sfrb TCCR1A=0x2f;
sfrb SFIOR=0x30;
sfrb OSCCAL=0x31;
sfrb OCDR=0x31;
sfrb TCNT0=0x32;
sfrb TCCR0=0x33;
sfrb MCUCSR=0x34;
sfrb MCUCR=0x35;
sfrb TWCR=0x36;
sfrb SPMCR=0x37;
sfrb TIFR=0x38;
sfrb TIMSK=0x39;
sfrb GIFR=0x3a;
sfrb GICR=0x3b;
sfrb OCR0=0X3c;
sfrb SPL=0x3d;
sfrb SPH=0x3e;
sfrb SREG=0x3f;
#pragma used-

//***** Bit Definitions

// GIMSK / GICR
	
// GIFR

// TIMSK

// TIFR

// SPMCR
	
// TWCR


// MCUCR
	

// MCUSR

// TCCR0

// SFIOR

// TCCR1A

// TCCR1B

// TCCR2

// ASSR

// WDTCR

// EECR

// PORTA

// DDRA

// PINA

// PORTB

// DDRB

// PINB

// PORTC

// DDRC

// PINC

// PORTD

// DDRD

// PIND

// SPSR

// SPCR

// UCSRA

// UCSRB

//UCSRC

// ACSR

// ADMUX

// ADCSR

// TWAR



// Interrupt vectors definitions




#pragma used+

void TransmitByte(unsigned char c);   //发送一个字节到USART
unsigned char ReceiveByte(void);      //从USART中读取一个字节
void TransmitLine(char *s);           //发送字符串到USART，以回车符结束
void TransmitLineF(flash char *s);    //同上
void TransmitString(char *s);         //发送任意字符串到USART
void TransmitStringF(flash char *s);  //同上
void USART_Init(unsigned char BaudRate);  //初始化USART，BaudRate为速度
void TestRate(void);                      //测试USART速度 
void ReceiveCMD(unsigned char * CmdBuf,unsigned char MaxCmdBuf); //从USART中读取一条命令行
#pragma used-
#pragma library USART.lib




//TWI define




#pragma used+

void TWI_init(unsigned char Rate);           //TWI 初始化 Rate为速度
void TWI_start(void);                        //启动TWI信号
void TWI_stop(void);                         //结束TWI信号
unsigned char TWI_read(unsigned char ACK);   //读取TWI一个字节
void TWI_write(unsigned char Data);          //写入TWI一个字节
void TWI_DefaultInit(void);                  //TWI最缺省的初始化

#pragma used-
#pragma library TWI.lib


#pragma used+

//EEPROM_Write 写一个字节到EEPROM
void EEPROM_Write(unsigned char H_ADD, unsigned char Type, unsigned int M_ADD, unsigned char Data);

//EEPROM_Read 从EEPROM中读取一个字节
unsigned char EEPROM_Read(unsigned char H_ADD, unsigned char Type, unsigned int M_ADD);

#pragma used-
#pragma library TWIAPP.lib

// CodeVisionAVR C Compiler
// (C) 1998-2005 Pavel Haiduc, HP InfoTech S.R.L.

// Prototypes for string functions



#pragma used+

char *strcat(char *str1,char *str2);
char *strcatf(char *str1,char flash *str2);
char *strchr(char *str,char c);
signed char strcmp(char *str1,char *str2);
signed char strcmpf(char *str1,char flash *str2);
char *strcpy(char *dest,char *src);
char *strcpyf(char *dest,char flash *src);
unsigned char strcspn(char *str,char *set);
unsigned char strcspnf(char *str,char flash *set);
unsigned int strlenf(char flash *str);
char *strncat(char *str1,char *str2,unsigned char n);
char *strncatf(char *str1,char flash *str2,unsigned char n);
signed char strncmp(char *str1,char *str2,unsigned char n);
signed char strncmpf(char *str1,char flash *str2,unsigned char n);
char *strncpy(char *dest,char *src,unsigned char n);
char *strncpyf(char *dest,char flash *src,unsigned char n);
char *strpbrk(char *str,char *set);
char *strpbrkf(char *str,char flash *set);
signed char strpos(char *str,char c);
char *strrchr(char *str,char c);
char *strrpbrk(char *str,char *set);
char *strrpbrkf(char *str,char flash *set);
signed char strrpos(char *str,char c);
char *strstr(char *str1,char *str2);
char *strstrf(char *str1,char flash *str2);
unsigned char strspn(char *str,char *set);
unsigned char strspnf(char *str,char flash *set);
char *strtok(char *str1,char flash *str2);
 

unsigned int strlen(char *str);
void *memccpy(void *dest,void *src,char c,unsigned n);
void *memchr(void *buf,unsigned char c,unsigned n);
signed char memcmp(void *buf1,void *buf2,unsigned n);
signed char memcmpf(void *buf1,void flash *buf2,unsigned n);
void *memcpy(void *dest,void *src,unsigned n);
void *memcpyf(void *dest,void flash *src,unsigned n);
void *memmove(void *dest,void *src,unsigned n);
void *memset(void *buf,unsigned char c,unsigned n);

#pragma used-
#pragma library string.lib



#pragma used+

char * ByteToHex(unsigned char bByte);  //Byte格式转为Hex格式
unsigned char HexToByte(char * Hex);    //Hex格式转为Byte格式

#pragma used-
#pragma library Types.lib

// CodeVisionAVR C Compiler
// (C) 1998-2000 Pavel Haiduc, HP InfoTech S.R.L.


#pragma used+

void delay_us(unsigned int n);
void delay_ms(unsigned int n);

#pragma used-


/************************
  接线方式：
  DS1302           PortC
  6.VCC  5.WP1     1.PC0  2.PC1
  4.SCL  3.WP2     3.PC2  4.PC3
  2.SDA  1.GND     5.PC4  6.PC5
                   7.PC6  8.PC7
                   9.GND  10.VCC
  
  6.VCC --  10.VCC
  4.SCL --  1.PC0
  2.SDA --  2.PC1
  5.WP1 --  3.PC2 (可不接)
  3.WP2 --  4.PC3 (可不接)
  1.GND --  9.GND

************************************/
  

#pragma warn-
//eeprom unsigned char EEPROMS[512];
#pragma warn+

void port_init(void)  //初始化各端口
{
 PORTB = 0xF0;
 DDRB  = 0x0F;
 PORTC = 0x00;
 DDRC  = 0x00;
 PORTB=0b11001100;
}

void TestCmd(void)
{
	unsigned int i;
  unsigned char CmdBuf[32]; //命令缓冲区
  unsigned char Chip;    //芯片地址
  unsigned int Addr;     //内存地址
  unsigned char AddrType;//内存地址格式
  unsigned int Cnt;      //读取长度
  unsigned char LED;     //LED显示，作用不大
	USART_Init(47);  //3.6864M=23,   7.3728M=47
	TransmitStringF("Welcome AVR Zone");
	for (i=0;i<32;i++) CmdBuf[i]=0;
	LED=0;
	while (1)
	{
	 ReceiveCMD(CmdBuf,32);	//读取一条命令行
   if (CmdBuf[0]>0)   //如果命令行长度不为零
   {
           //for (i=0;i<MAXCMDBUF;i++) TransmitByte(CmdBuf[i]);
     TransmitByte(0x1B    );   //送出命令开始符
     TransmitByte(CmdBuf[1]);  //送出命令
     if (CmdBuf[1]=='H') //如果接收的是帮助命令
     {
       TransmitStringF("Command format(Hex):'1B CMD 1C'");
       TransmitByte(13);
       TransmitStringF("Read EEPROM Data:'R','Addr','Count'");
       TransmitByte(13);
       TransmitStringF("Write EEPROM Data:'W','Addr','Data'");
       TransmitByte(13);
       TransmitStringF("Show Help:'H'");
       TransmitByte(13);
       PORTB=~PORTB;
     }               
     if (CmdBuf[1]=='R') //如果接收的是读取EEPROM命令
     {
       AddrType=HexToByte(&CmdBuf[2]);
       Chip=(HexToByte(&CmdBuf[4])&0B00001110)|0xA0  ;
       Addr=(((unsigned int)HexToByte(&CmdBuf[6]))<<8)|((unsigned int)HexToByte(&CmdBuf[8]));
       Cnt=(((unsigned int)HexToByte(&CmdBuf[10]))<<8)|((unsigned int)HexToByte(&CmdBuf[12]));
       if (Addr+Cnt>255) Cnt=255-Addr;
       for (i=0;i<Cnt;i++) 
         {
          TransmitString(ByteToHex(EEPROM_Read(Chip,AddrType,Addr+i)));
          TransmitByte(32);
         }
     }
     if (CmdBuf[1]=='W') //如果接收的是写入EEPROM命令
     { 
       AddrType=HexToByte(&CmdBuf[2]);
       Chip=(HexToByte(&CmdBuf[4])&0B00001110)|0xA0  ;
       Addr=(((unsigned int)HexToByte(&CmdBuf[6]))<<8)|((unsigned int)HexToByte(&CmdBuf[8]));
       EEPROM_Write(Chip,AddrType,Addr,HexToByte(&CmdBuf[10]));
       delay_ms(5);
       TransmitString(ByteToHex(EEPROM_Read(Chip,AddrType,Addr)));
     }
   TransmitByte(0x1C    ); //送出命令结束符
   for (i=0;i<32;i++) CmdBuf[i]=0;  //清空命令缓冲区
   }
	LED++;
	//PORTB&=~((LED>>7)&0x03);
	}
}

void main()
{
	port_init();
	TWI_DefaultInit();
 	TestCmd();
}