/* Function called for achieving next TX Byte sending.  */
void USART_TXEmpty_Callback(void)
/* Function called for achieving next TX Byte sending.  */
void USART_TXEmpty_Callback(void)
{
  if(ubSend == (ubSizeToSend - 1))
  {
    LL_USART_DisableIT_TXE(USARTx_INSTANCE);
    LL_USART_EnableIT_TC(USARTx_INSTANCE);
  }
  LL_USART_TransmitData8(USARTx_INSTANCE, aStringToSend[ubSend++]);
}