C++ (Cpp) usart_tx_ready Beispiele

Beispiel #1

Datei: ISO7816_USART_INT.c Projekt: Nitrokey/nitrokey-storage-firmware

u32 ISO7816_SendCharISR (u32 nChar_u32, u32 nTimeOutMs_u32)
{
int i;

    ToolPinSet ();

    for (i = 0; i < nTimeOutMs_u32; i++)
    {
        // Tx free ?
        if (TRUE == usart_tx_ready (EXAMPLE_INT_USART))
        {
            // Tx transmitter buffer ?
            // if (TRUE == usart_txTransmitter_ready(EXAMPLE_INT_USART))
            {
                // Yes, send char
                usart_write_char (EXAMPLE_INT_USART, nChar_u32);
                ToolPinClr ();
                return USART_SUCCESS;
            }
        }

        // Wait 1 ms
        vTaskDelay (CCID_TASK_DELAY_1_MS_IN_TICKS);
    }

    ToolPinClr ();

    return (USART_TX_BUSY);
}

Beispiel #2

Datei: usart_spi.c Projekt: ThucVD2704/femto-usb-blink-example

/*! \brief Check if the USART Transmit Holding Register is empty or not in SPI mode.
 *
 * \param p_usart Base address of the USART instance.
 *
 * \retval 1      There is no data in the Transmit Holding Register.
 * \retval 0      There are data in the Transmit Holding Register.
 */
uint32_t usart_spi_is_tx_ready(volatile avr32_usart_t *p_usart)
{
	return usart_tx_ready(p_usart);
}