C++ (Cpp) compute_current_frame_length示例

示例#1

文件： ser_phy_nrf51_spi_5W_slave.c 项目： BLEHexapod/nrf_sdk

static uint32_t frame_get()
{
    uint32_t err_code;

    m_current_rx_frame_length = compute_current_frame_length(m_rx_packet_length,
                                                             m_accumulated_rx_packet_length);

    if (!m_trash_payload_flag)
    {
        err_code =
            nrf_drv_spis_buffers_set(&m_spis,
                                     (uint8_t *) m_zero_buff,
                                     m_current_rx_frame_length,
                                     &(m_p_rx_buffer[m_accumulated_rx_packet_length]),
                                     m_current_rx_frame_length);
    }
    else
    {
        err_code = nrf_drv_spis_buffers_set(&m_spis,
                                            (uint8_t *) m_zero_buff,
                                            m_current_rx_frame_length,
                                            m_rx_frame_buffer,
                                            m_current_rx_frame_length);
    }
    return err_code;
}

示例#2

文件： ser_phy_nrf51_spi_5W_slave.c 项目： RepRapThailand/Espruino

static uint32_t frame_send()
{
    uint32_t err_code;

    m_current_tx_frame_length = compute_current_frame_length(m_tx_packet_length,
                                                             m_accumulated_tx_packet_length);

    if (m_current_tx_frame_length == SER_PHY_SPI_5W_MTU_SIZE)
    {
        m_current_tx_frame_length -= 1; //extra space for guard byte must be taken into account for MTU
    }
    m_tx_frame_buffer[0] = 0; //guard byte
    copy_buff(&(m_tx_frame_buffer[1]),
              &(m_p_tx_buffer[m_accumulated_tx_packet_length]),
              m_current_tx_frame_length);
    err_code = spi_slave_buffers_set(m_tx_frame_buffer,
                                     m_rx_frame_buffer,
                                     m_current_tx_frame_length + 1,
                                     m_current_tx_frame_length + 1);

    return err_code;
}