求助关于页写at24c02的问题，只能写入6个字节，7与8字节写...

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powerantone| 高级工程师

楼主 | 2021-2-20 15:03 | 只看该作者回帖奖励

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at24c02, I2c, se, AD

只能写入6个字节，7与8字节写不进
uint32_t EEPROM_PageWrite(uint8_t u8Addr, uint8_t *pu8Buf)
{
int32_t i32Err;
int32_t i,k;
  k=0;
do
{
k++;
      i32Err = 0;
      /* Send start */
      _I2C_START(I2C0);
      _I2C_WAIT_READY(I2C0);
      /* Send control byte */
      _I2C_WRITE(I2C0, EEPROM_WRITE_ADDR);
      _I2C_WAIT_READY(I2C0);
      if(I2C0->I2CSTATUS == 0x18)
      {
         {
            /* ACK */

            /* Send low address */
            _I2C_WRITE(I2C0, u8Addr); //address
            _I2C_WAIT_READY(I2C0);
            if(I2C0->I2CSTATUS == 0x28)
            {
                  /* ACK */

                  for(i=0;i<8;i++)
                  {
                     /* Send data */
         if(I2C0->I2CSTATUS == 0x28)
         {
         _I2C_WRITE(I2C0, pu8Buf[i]); // data
         _I2C_WAIT_READY(I2C0);
         if(I2C0->I2CSTATUS == 0x30)
         {
            /* NACK */

            /* Send data error */
            i32Err = 3;
         }
         }
         else i32Err = 1;
                  }
      if(I2C0->I2CSTATUS == 0x28)
      {
         /* ACK */
         /* Send stop */
         _I2C_STOP(I2C0);
      }
      else
      {
         /* NACK */
         /* Send data error */
         i32Err = 4;
      }
            }
            else
            {
                  /* NACK */

                  /* Send low address error */
                  i32Err = 2;
            }
         }
      }
      else
      {
         /* NACK */

         /* Send control error */
         i32Err = 1;
      }
      if(i32Err)
      {
         /* Send stop */
         _I2C_STOP(I2C0);
}
      Delay(200);
}while(i32Err&&(k<4));
  return(i32Err);
}

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