No Acknowledgment flag (NO_ACK)

[rosek86]

Hi, thanks for micro-esb, I found it very useful!

It seems that micro-esb sends ACK packets for all packets, even though NO_ACK flag is set. This decreases throughput when only communication in one way is needed.

if(NRF_RADIO->CRCSTATUS != 0 && m_rx_fifo.count < UESB_CORE_RX_FIFO_SIZE)
{
    send_ack = true;
}

shouldn't this be something like this:

if(NRF_RADIO->CRCSTATUS != 0)
{
    if(m_rx_fifo.count < UESB_CORE_RX_FIFO_SIZE && (m_rx_payload_buffer[1] & 1) == 1)
        send_ack = true;
    else
        set_rx_interrupt = true;
}