24CL256写入的数据与读出的数据不符

枫树辰 · 发表于 2017-7-24 11:45:34

为什么24CL256写入的数据与读出的数据不符，读出的数据是写入数据的两倍加1 ，比如我写入 5；6；7；8；读出的数据是11；13；15；17；/******************************************************************/
cucBit[] = {0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01};
/******************************************************************/
unsigned char I2cSend(unsigned char ucData)
{
unsigned char i;
for (i = 0; i < 8; i++)
{
SCL1=0;
delay_5us();
if ( (ucData & cucBit[i]) != 0)
      {
           SDA1=1;
           }
else
      {
         SDA1=0;
      }
delay_5us();
SCL1=1;
delay_5us();
}
SCL1=0;
return true;
}
/******************************************************************/
unsigned char I2cReceive(void)
{
unsigned char ucData=0x00;
unsigned char i;
SDA1=1;
TRISC4=1;
for ( i = 0; i < 8; i++)
{
SCL1=0;
delay_5us();
SCL1=1;
delay_5us();
if (SDA1==1)
{
ucData |= cucBit[i];
}
}
SCL1=0;
TRISC4 = 0;
return ucData;
}
void Write_EEPROM(uchar addr,uint temp)
{
I2cStart();
I2cSend(0xa0);
WaitAck();
I2cSend(addr>>8);
WaitAck();
I2cSend(addr&0x00ff);
WaitAck();
I2cSend(temp);
WaitAck();
I2cStop();
delay_ms(5);
}
/*************************************************************/
uchar Read_EEPROM(uchar addr)
{
uchar temp;
I2cStart();
I2cSend(0xa0);
WaitAck();
I2cSend(addr>>8);
WaitAck();
I2cSend(addr&0x00ff);
WaitAck();
I2cStart();
I2cSend(0xa1);
WaitAck();
delay_5us;
SendNotAck();
temp = I2cReceive();
I2cStop();
delay_ms(5);
return temp;
}