Response is always 0xFF

Hi AK,

Other than incorrect values returned by the TMP275, does the communication with the TMP275 adhere to the description in the datasheet? For example, does the TMP275 acknowledge the reception of a valid slave address from the master? It would also be good to verify that the pointer register values transmitted by the master point to the correct register locations in the TMP275.

My simple code

i2cState = n_CI2C.MasterSend(
                (TMP275_SL_ADDR),		
                &tx_data[0],		
                1);

i2cStatus_t CI2C::MasterSend(uint8_t adr, uint8_t * const tx_buf, uint16_t tx_num)
{
  MD_STATUS status;
  status = R_IICA0_Master_Send(adr, tx_buf, tx_num, 20);
  if (status == MD_OK) return I2C_STATUS_OK;
  else if (status == MD_BUSY1)return I2C_STATUS_BUSY;
  else if (status == MD_ERROR)return I2C_STATUS_ERROR;
  
  return I2C_STATUS_NAK;
}

this is part of my  code 

and every time i try to do TEMP_READ , the response I get is I2C_STATUS_OK meaning the address was accepted