Ejemplo n.º 1
0
static void uart_irq_handler(NRF_UART_Type *        p_uart,
                             uart_control_block_t * p_cb)
{
    if (nrf_uart_int_enable_check(p_uart, NRF_UART_INT_MASK_ERROR) &&
        nrf_uart_event_check(p_uart, NRF_UART_EVENT_ERROR))
    {
        nrfx_uart_event_t event;
        nrf_uart_event_clear(p_uart, NRF_UART_EVENT_ERROR);
        NRFX_LOG_DEBUG("Event: %s.", EVT_TO_STR(NRF_UART_EVENT_ERROR));
        nrf_uart_int_disable(p_uart, NRF_UART_INT_MASK_RXDRDY |
                                     NRF_UART_INT_MASK_ERROR);
        if (!p_cb->rx_enabled)
        {
            nrf_uart_task_trigger(p_uart, NRF_UART_TASK_STOPRX);
        }
        event.type                   = NRFX_UART_EVT_ERROR;
        event.data.error.error_mask  = nrf_uart_errorsrc_get_and_clear(p_uart);
        event.data.error.rxtx.bytes  = p_cb->rx_buffer_length;
        event.data.error.rxtx.p_data = p_cb->p_rx_buffer;

        // Abort transfer.
        p_cb->rx_buffer_length = 0;
        p_cb->rx_secondary_buffer_length = 0;

        p_cb->handler(&event,p_cb->p_context);
    }
    else if (nrf_uart_int_enable_check(p_uart, NRF_UART_INT_MASK_RXDRDY) &&
             nrf_uart_event_check(p_uart, NRF_UART_EVENT_RXDRDY))
    {
        rx_byte(p_uart, p_cb);
        if (p_cb->rx_buffer_length == p_cb->rx_counter)
        {
            if (p_cb->rx_secondary_buffer_length)
            {
                uint8_t * p_data     = p_cb->p_rx_buffer;
                size_t    rx_counter = p_cb->rx_counter;

                // Switch to secondary buffer.
                p_cb->rx_buffer_length = p_cb->rx_secondary_buffer_length;
                p_cb->p_rx_buffer = p_cb->p_rx_secondary_buffer;
                p_cb->rx_secondary_buffer_length = 0;
                p_cb->rx_counter = 0;
                rx_done_event(p_cb, rx_counter, p_data);
            }
            else
            {
                if (!p_cb->rx_enabled)
                {
                    nrf_uart_task_trigger(p_uart, NRF_UART_TASK_STOPRX);
                }
                nrf_uart_int_disable(p_uart, NRF_UART_INT_MASK_RXDRDY |
                                             NRF_UART_INT_MASK_ERROR);
                p_cb->rx_buffer_length = 0;
                rx_done_event(p_cb, p_cb->rx_counter, p_cb->p_rx_buffer);
            }
        }
    }

    if (nrf_uart_event_check(p_uart, NRF_UART_EVENT_TXDRDY))
    {
        if (p_cb->tx_counter < p_cb->tx_buffer_length &&
            !p_cb->tx_abort)
        {
            tx_byte(p_uart, p_cb);
        }
        else
        {
            nrf_uart_event_clear(p_uart, NRF_UART_EVENT_TXDRDY);
            if (p_cb->tx_buffer_length)
            {
                tx_done_event(p_cb, p_cb->tx_buffer_length);
            }
        }
    }

    if (nrf_uart_event_check(p_uart, NRF_UART_EVENT_RXTO))
    {
        nrf_uart_event_clear(p_uart, NRF_UART_EVENT_RXTO);

        // RXTO event may be triggered as a result of abort call. In th
        if (p_cb->rx_enabled)
        {
            nrf_uart_task_trigger(p_uart, NRF_UART_TASK_STARTRX);
        }
        if (p_cb->rx_buffer_length)
        {
            p_cb->rx_buffer_length = 0;
            rx_done_event(p_cb, p_cb->rx_counter, p_cb->p_rx_buffer);
        }
    }
}
Ejemplo n.º 2
0
static void uarte_irq_handler(NRF_UARTE_Type *        p_uarte,
                              uarte_control_block_t * p_cb)
{
    if (nrf_uarte_event_check(p_uarte, NRF_UARTE_EVENT_ERROR))
    {
        nrfx_uarte_event_t event;

        nrf_uarte_event_clear(p_uarte, NRF_UARTE_EVENT_ERROR);

        event.type                   = NRFX_UARTE_EVT_ERROR;
        event.data.error.error_mask  = nrf_uarte_errorsrc_get_and_clear(p_uarte);
        event.data.error.rxtx.bytes  = nrf_uarte_rx_amount_get(p_uarte);
        event.data.error.rxtx.p_data = p_cb->p_rx_buffer;

        // Abort transfer.
        p_cb->rx_buffer_length = 0;
        p_cb->rx_secondary_buffer_length = 0;

        p_cb->handler(&event, p_cb->p_context);
    }
    else if (nrf_uarte_event_check(p_uarte, NRF_UARTE_EVENT_ENDRX))
    {
        nrf_uarte_event_clear(p_uarte, NRF_UARTE_EVENT_ENDRX);
        size_t amount = nrf_uarte_rx_amount_get(p_uarte);
        // If the transfer was stopped before completion, amount of transfered bytes
        // will not be equal to the buffer length. Interrupted transfer is ignored.
        if (amount == p_cb->rx_buffer_length)
        {
            if (p_cb->rx_secondary_buffer_length)
            {
                uint8_t * p_data = p_cb->p_rx_buffer;
                nrf_uarte_shorts_disable(p_uarte, NRF_UARTE_SHORT_ENDRX_STARTRX);
                p_cb->rx_buffer_length = p_cb->rx_secondary_buffer_length;
                p_cb->p_rx_buffer = p_cb->p_rx_secondary_buffer;
                p_cb->rx_secondary_buffer_length = 0;
                rx_done_event(p_cb, amount, p_data);
            }
            else
            {
                p_cb->rx_buffer_length = 0;
                rx_done_event(p_cb, amount, p_cb->p_rx_buffer);
            }
        }
    }

    if (nrf_uarte_event_check(p_uarte, NRF_UARTE_EVENT_RXTO))
    {
        nrf_uarte_event_clear(p_uarte, NRF_UARTE_EVENT_RXTO);
        if (p_cb->rx_buffer_length)
        {
            p_cb->rx_buffer_length = 0;
            rx_done_event(p_cb, nrf_uarte_rx_amount_get(p_uarte), p_cb->p_rx_buffer);
        }
    }

    if (nrf_uarte_event_check(p_uarte, NRF_UARTE_EVENT_ENDTX))
    {
        nrf_uarte_event_clear(p_uarte, NRF_UARTE_EVENT_ENDTX);
        if (p_cb->tx_buffer_length)
        {
            tx_done_event(p_cb, nrf_uarte_tx_amount_get(p_uarte));
        }
    }
}