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標題: pic 怎么向24C08存儲塊里寫程序。 [打印本頁]

作者: dinghongjin 時間: 2008-7-11 21:47
標題: pic 怎么向24C08存儲塊里寫程序。
各位大俠好！

小弟遇到一個問題，PIC怎么向存儲塊24C08里面里寫程序，這個程序怎么寫。請大蝦幫我一下，感謝不盡。

作者: dinghongjin 時間: 2008-7-11 21:48

我要的掉電存儲。謝謝

作者: a13758777532 時間: 2008-7-15 15:57

網上有

作者: thanato 時間: 2008-8-28 16:16
baidu上搜24c01代碼。

作者: chensiyu5928 時間: 2014-10-16 18:38
baidu上搜

作者: mqwu 時間: 2014-10-22 11:46
給你寫了一個，編譯了一下沒有問題，運行也沒問題
//********************* AT24C08 Application ******************************//

#include <pic.h>

__CONFIG(HS&WDTDIS&LVPDIS);
//__CONFIG(0x3B31);
#define uchar unsigned char
#define uint  unsigned int

//LCD 1602 Port Configuration
#define E RB3          //RB3 is connected to LCD 1602 Pin_E;
#define RW  RB4          //RB4 is connected to LCD 1602 Pin_RW;
#define RS  RB5          //RB5 is Connected to LCD 1602 RS;

//Hardware I2C Configuration
#define SCL RC3    //AT24C08  Pin_SCL is connected to RC3;
#define SDA RC4    //AT24C08  Pin_SDA is connected to RC4;
#define I2C_PageSize    16
uchar Databuf;    //define the data;
uint boot_times1, boot_times2;

void I2C_Initialize(void)
{
SSPADD=0x02;          //¨o¡à?¨®=Fosc/(4*(SSPADD+1)),¡à?¨¤y?a333KHz
SSPSTAT=0X80;       //2¨|¨®?¡à¨o¡á??¡ê¨o?¡ê?¨o?¨¨?|ì????¨2¡á?IIC¡á¨1??¡à¨o¡á?
SSPCON=0X28;          //IIC¨a¡§D?1|?¨1¨o1?¨1,IIC?¡Â??¡¤?¨o?
SSPCON2=0;          //3?¨o??¡￥SSPCON2??¡ä??¡Â
}

void Write_AT24C08(uchar WriteAddr,uchar Databuf)
{
SEN=1;                //2¨2¨|¨2IIC???¡￥D?o?
while(SEN==1);       //?¡à|ì????¡￥?a?1
SSPIF=0;             //??SSPIF¡à¨o????

SSPBUF=0xA0;          //¡¤¡é?¨aAT24C08|ì??¡Â?t|ì??¡¤o¨aD¡äD?o?
while(SSPIF==0);    //?¡à|ì?¡¤¡é?¨a¨a¨o¡à??a?1
SSPIF=0;             //??SSPIF¡à¨o????

SSPBUF=WriteAddr;
while(SSPIF==0);    //?¡à|ì?¡¤¡é?¨a¨a¨o¡à??a?1
SSPIF=0;             //??SSPIF¡à¨o????

SSPBUF=Databuf;       //¡¤¡é?¨a¨oy?Y
while(SSPIF==0);    //?¡à|ì?¡¤¡é?¨a¨a¨o¡à??a?1
SSPIF=0;             //??SSPIF¡à¨o????

PEN=1;                //2¨2¨|¨2IIC¨a¡ê?1D?o?
while(PEN==1);       //?¡à|ì?¨a¡ê?1?a?1
SSPIF=0;             //??SSPIF¡à¨o????
}

unsigned Read_AT24C08(uchar Addr)
{
unsigned char buf;    //?¡§¨°?¨°?????¡ä??¡Â¨®?¨¤¡ä?Y¡ä??¨￠3?|ì?¨oy?Y
SEN=1;                //2¨2¨|¨2IIC???¡￥D?o?
while(SEN==1);       //?¡à|ì????¡￥?a?1
SSPIF=0;             //??SSPIF¡à¨o????

SSPBUF=0xA0;          //¡¤¡é?¨aAT24C08|ì??¡Â?t|ì??¡¤o¨aD¡äD?o?
while(SSPIF==0);    //?¡à|ì?¡¤¡é?¨a¨a¨o¡à??a?1
SSPIF=0;             //??SSPIF¡à¨o????

SSPBUF=Addr;       //¡¤¡é?¨a|ì??¡¤
while(SSPIF==0);    //?¡à|ì?¡¤¡é?¨a¨a¨o¡à??a?1
SSPIF=0;             //??SSPIF¡à¨o????

RSEN=1;             //2¨2¨|¨2IIC?????¡￥D?o?
while(SSPIF==0);    //?¡à|ì????¡￥?a?1
SSPIF=0;             //??SSPIF¡à¨o????

SSPBUF=0xA1;          //¡¤¡é?¨aAT24C08|ì??¡Â?t|ì??¡¤o¨a?¨￠D?o?
while(SSPIF==0);    //?¡à|ì?¡¤¡é?¨a¨a¨o¡à??a?1
SSPIF=0;             //??SSPIF¡à¨o????

RCEN=1;             //¨|¨¨???¨￠?¨oD¨a
while(SSPIF==0);    //?¡à|ì?¡¤¡é¨a¨o?a?1
buf=SSPBUF;          //?¨￠3?¨oy?Y¡¤?¨¨?buf?D?Y¡ä?
ACKDT=1;             //?¡ä¨¨¡¤¨¨?¨oy?Y??
ACKEN=1;             //¡¤¡é?¨a¨®|¡äeD?o?
while(SSPIF==0);    //?¡à|ì?¡¤¡é?¨a¨a¨o¡à??a?1
SSPIF=0;             //??SSPIF¡à¨o????

PEN=1;                //2¨2¨|¨2IIC¨a¡ê?1D?o?
while(PEN==1);       //?¡à|ì?¨a¡ê?1?a?1
SSPIF=0;             //??SSPIF¡à¨o????

return(buf);          //???¨￠3?¨oy?Y¡¤|ì??
}

void I2C_PageWrite(uchar* pBuffer, uchar WriteAddr, uint NumByteToWrite)
{

while(NumByteToWrite--)
   {
   /* Send the current byte */
   Write_AT24C08(WriteAddr,*pBuffer);
   pBuffer++;
   }
  }

void I2C_BufferWrite(uchar* pBuffer, uchar WriteAddr, uint NumByteToWrite)
{
  uchar NumOfPage = 0, NumOfSingle = 0, Addr = 0, count = 0;
  Addr = WriteAddr % I2C_PageSize;
  count = I2C_PageSize - Addr;
  NumOfPage =  NumByteToWrite / I2C_PageSize;
  NumOfSingle = NumByteToWrite % I2C_PageSize;

  /* If WriteAddr is I2C_PageSize aligned  */
  if(Addr == 0)
  {
/* If NumByteToWrite < I2C_PageSize */
if(NumOfPage == 0)
   I2C_PageWrite(pBuffer, WriteAddr, NumOfSingle);
/* If NumByteToWrite > I2C_PageSize */
else
{
   while(NumOfPage--)
   {
      I2C_PageWrite(pBuffer, WriteAddr, I2C_PageSize);
      WriteAddr +=  I2C_PageSize;
      pBuffer += I2C_PageSize;
   }

   if(NumOfSingle!=0)
      I2C_PageWrite(pBuffer, WriteAddr, NumOfSingle);
}
  }
  /* If WriteAddr is not I2C_PageSize aligned  */
  else
  {
/* If NumByteToWrite < I2C_PageSize */
if(NumOfPage== 0)
   I2C_PageWrite(pBuffer, WriteAddr, NumOfSingle);
/* If NumByteToWrite > I2C_PageSize */
else
{
   NumByteToWrite -= count;
   NumOfPage =  NumByteToWrite / I2C_PageSize;
   NumOfSingle = NumByteToWrite % I2C_PageSize;

   if(count != 0)
   {
      I2C_PageWrite(pBuffer, WriteAddr, count);
      WriteAddr += count;
      pBuffer += count;
   }

   while(NumOfPage--)
   {
      I2C_PageWrite(pBuffer, WriteAddr, I2C_PageSize);
      WriteAddr +=  I2C_PageSize;
      pBuffer += I2C_PageSize;
   }
   if(NumOfSingle != 0)
   {
      I2C_PageWrite(pBuffer, WriteAddr, NumOfSingle);

   }
}
  }
}

void Delay1602(uint t)
{
   uint k;
   for(k=0;k<t;k++); //?¨®¨o¡à
}

void LCD1602_busy(void)
{
   TRISD7=1;          //??RD7?¨2¨|¨¨???a¨o?¨¨??¨2¡ê??a?¨￠¡á?¡á?¡à?
   RS=0;             //RS=0?¡éRW=1?¡éE=1¨o¡à¡ê??|D?o?¨o?3?|ì?DB7¡ê?¨®¨|RD7?¨￠¨¨?
   RW=1;             //RS=0?¡éRW=1?¡éE=1¨o¡à¡ê??|D?o?¨o?3?|ì?DB7¡ê?¨®¨|RD7?¨￠¨¨?
   E=1;                //RS=0?¡éRW=1?¡éE=1¨o¡à¡ê??|D?o?¨o?3?|ì?DB7¡ê?¨®¨|RD7?¨￠¨¨?
   while(RD7==1);    //¨®¨|RD7?¨￠¨¨?1¡ê?¡à¨a¨o?1602¨°o?¡ì?|¡ê?D¨¨¨°a|ì¨¨¡äy
   E=0;                //?¨￠¨a¨o¨°?o¨®¡ê????¡äE|ì?|ì???
   TRISD7=0;          //??RD7?¨2¨|¨¨???a¨o?3??¨2
}

void LCD1602_Write_com(uchar combuf)
{
   RS=0;             //??????¨￠???¡ä??¡Â
   RW=0;             //????D¡ä¡á¡ä¨¬?
   PORTD=combuf;       //???¨1¨￠?¡á?¨a¡§1yRD?¨2?¨a?¨￠DB
   E=1;                //E??|ì??????¨1¨￠?¡á?D¡ä¨¨?1602¨°o?¡ì
   asm("NOP");       //¨¬¨a?¨®¨°?????2¨′¡á¡Â¡ê?¨o1??|ì????¨￠¨|¨′??3?1us
   E=0;                //D¡ä¨a¨o¨°?o¨®¡ê????¡äE|ì?|ì???
}

void LCD1602_Write_com_busy(uchar combuf)
{
   LCD1602_busy();          //|ì¡Â¨®??|?¨¬2ao¡￥¨oy
   LCD1602_Write_com(combuf); //|ì¡Â¨®??|?¨¬2ao¡￥¨oy
}

void LCD1602_Write_data_busy(uchar databuf)
{
   LCD1602_busy();    //|ì¡Â¨®??|?¨¬2ao¡￥¨oy
   RS=1;             //????¨oy?Y??¡ä??¡Â
   RW=0;             //????D¡ä¡á¡ä¨¬?
   PORTD=databuf;       //???¨1¨￠?¡á?¨a¡§1yRD?¨2?¨a?¨￠DB
   E=1;                //E??|ì??????¨1¨￠?¡á?D¡ä¨¨?1602¨°o?¡ì
   asm("NOP");       //¨¬¨a?¨®¨°?????2¨′¡á¡Â¡ê?¨o1??|ì????¨￠¨|¨′??3?1us
   E=0;                //D¡ä¨a¨o¨°?o¨®¡ê????¡äE|ì?|ì???
}

void LCD1602_Write_address(uchar x,uchar y)
{
   x&=0x0f;          //¨￠D|ì??¡¤?T???¨20-15??
   y&=0x01;          //DD|ì??¡¤?T???¨20-1??
   if(y==0)          //¨¨?1?¨o?|ì¨2¨°?DD
      LCD1602_Write_com_busy(x|0x80);       //??¨￠D|ì??¡¤D¡ä¨¨?
   else                //¨¨?1?¨o?|ì¨2?tDD
      LCD1602_Write_com_busy((x+0x40)|0x80); //??¨￠D|ì??¡¤D¡ä¨¨?
}

void LCD1602_init(void)
{
   Delay1602(1500);       //|ì¡Â¨®??¨®¨o¡ào¡￥¨oy
   LCD1602_Write_com(0x38);  //8??¨oy?Y¡á¨1??¡ê?¨￠?DD??¨o??¡ê¨o?¡ê?5*7|ì??¨®??¨o?
   Delay1602(500);          //|ì¡Â¨®??¨®¨o¡ào¡￥¨oy
   LCD1602_Write_com(0x38);  //8??¨oy?Y¡á¨1??¡ê?¨￠?DD??¨o??¡ê¨o?¡ê?5*7|ì??¨®??¨o?
   Delay1602(500);          //|ì¡Â¨®??¨®¨o¡ào¡￥¨oy
   LCD1602_Write_com(0x38);  //8??¨oy?Y¡á¨1??¡ê?¨￠?DD??¨o??¡ê¨o?¡ê?5*7|ì??¨®??¨o?
   LCD1602_Write_com_busy(0x38);  //8??¨oy?Y¡á¨1??¡ê?¨￠?DD??¨o??¡ê¨o?¡ê?5*7|ì??¨®??¨o?
   LCD1602_Write_com_busy(0x08);  //??¨o?1|?¨11?¡ê??T1a¡à¨o
   LCD1602_Write_com_busy(0x01);  //???¨￠
   LCD1602_Write_com_busy(0x06);  //D¡ä¨¨?D?|ì?¨oy?Yo¨®¡ê?1a¡à¨o¨®¨°¨°?¡ê???¨o??¨￠2?¨°??¡￥
   LCD1602_Write_com_busy(0x0C);  //??¨o?1|?¨1?a¡ê??T1a¡à¨o
}

void LCD1602_Disp(uchar x,uchar y,uchar buf)
{
   LCD1602_Write_address(x,y); //?¨¨??|ì??¡¤D??¡éD¡ä¨¨?
   LCD1602_Write_data_busy(buf);  //?¨′D¡ä¨¨?¨°a??¨o?|ì?¨oy?Y
}

void main(void)          //?¡Âo¡￥¨oy,|ì￡¤???¨2?a?¨2o¨®?¨a¨o?¡ä¨®?a??o¡￥¨oy?a¨o???DD
{

TRISB=0B11000111;    //3?¨o??¡￥RB7-RB0|ì?¨o?¨¨?¨o?3?¡¤??¨°
TRISC=0B11111111;    //3?¨o??¡￥RC7-RC0|ì?¨o?¨¨?¨o?3?¡¤??¨°
TRISD=0B00000000;    //3?¨o??¡￥RD7-RD0|ì?¨o?¨¨?¨o?3?¡¤??¨°
PORTB=0B00000000;    //3?¨o??¡￥RB7-RB0|ì?¨oy?|ì
PORTC=0B00000000;    //3?¨o??¡￥RC7-RC0|ì?¨oy?|ì
PORTD=0B00000000;    //3?¨o??¡￥RD7-RD0|ì?¨oy?|ì

I2C_Initialize();
LCD1602_init();       //|ì¡Â¨®?1602¨°o?¡ì3?¨o??¡￥o¡￥¨oy
//***due to count the reboot times, no need to use the Pagewrite;
//if possible you could use the 16-bits to show the times,you need to uncomment
//below 8 rows

// boot_times1=Read_AT24C08(0x00); //¡ä¨®AT24C08?D|ì??¡¤0X18?¨￠¨¨?¨oy?Y
// boot_times2=Read_AT24C08(0x01); //¡ä¨®AT24C08?D|ì??¡¤0X18?¨￠¨¨?¨oy?Y
// Databuf=boot_times1*256+boot_times2;
// Databuf++;                //?¨￠3?¨oy?Y+1
// boot_times1=Databuf/256;
// boot_times2=Databuf%256;
// Write_AT24C08(0x00,boot_times1);  //??+1o¨®|ì?¨oy?Y¡à¡ê¡ä?|ì?0X18?D
// Write_AT24C08(0x01,boot_times2);  //??+1o¨®|ì?¨oy?Y¡à¡ê¡ä?|ì?0X18?D

Databuf=Read_AT24C08(0x00); //¡ä¨®AT24C08?D|ì??¡¤0X18?¨￠¨¨?¨oy?Y
Databuf++;                //?¨￠3?¨oy?Y+1
Write_AT24C08(0x00,Databuf);  //??+1o¨®|ì?¨oy?Y¡à¡ê¡ä?|ì?0X18?D

LCD1602_Disp(0,0,'M');
LCD1602_Disp(1,0,'Y');

LCD1602_Disp(3,0,'M');
LCD1602_Disp(4,0,'C');
LCD1602_Disp(5,0,'U');

LCD1602_Disp(0,1,'B');
LCD1602_Disp(1,1,'O');
LCD1602_Disp(2,1,'O');
LCD1602_Disp(3,1,'T');

LCD1602_Disp(5,1,'T');
LCD1602_Disp(6,1,'I');
LCD1602_Disp(7,1,'M');
LCD1602_Disp(8,1,'E');
LCD1602_Disp(9,1,'S');
LCD1602_Disp(10,1,':');

LCD1602_Disp(12,1,Databuf/100+0x30);    //??¨o?¡ã¨′??
LCD1602_Disp(13,1,(Databuf%100)/10+0x30); //??¨o?¨o???
LCD1602_Disp(14,1,Databuf%10+0x30);    //??¨o?????
while(1);
}

作者: dege 時間: 2015-1-20 14:45
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