Where is Hal_UART_TxBufLen implemented?

There is no implementation of Hal_UART_TxBufLen in the ZStack-1.4.3-1.2.1, as you know.

The HalUARTWrite() defined in ZStack-1.4.3-1.2.1\Components\hal\target\CC2430EB\hal_uart.c, implements an all-or-nothing mode of operation when writing a buffer to the UART.  If the UART HAL buffer has enough room for the new data to be written, it will add to the internal software FIFO.  However, if there is not enough room, the HalUARTWrite() will return.

The HalUARTWrite() function uses the TX_AVAIL() macro to determine if there is enough room.

Carlos Codina said:

If I call HalUARTWrite function, how can I to know where data has been sent?

 HalUARTWrite(port, pBuffer, length);

  do {
  } while ( Hal_UART_TxBufLen(port)>0 );

If yes, what is the implementation of HalUARTWrite ?

 

I'm not sure I understand exactly what you are asking.  There is already an implementation of HalUARTWrite().  I think you mean to ask what would be a recommended implementation of Hal_UART_TxBufLen(), correct?

If so, here is a proposal.  I haven't tested this, but it should be something close.

uint16 Hal_UART_TxBufLen( uint8 port )
{
  uartCfg_t *cfg = NULL;

#if HAL_UART_0_ENABLE
  if ( port == HAL_UART_PORT_0 )
  {
    cfg = cfg0;
  }
#endif
#if HAL_UART_1_ENABLE
  if ( port == HAL_UART_PORT_1 )
  {
    cfg = cfg1;
  }
#endif

  HAL_UART_ASSERT( cfg );

  return TX_AVAIL( cfg );
}