Example Radio Transmitter / Receiver on 52840

RE: Example Radio Transmitter / Receiver on 52840

Dmitry — Thu, 13 Feb 2020 15:02:48 GMT

Hi Eva,

two points to check:

1. Ensure that your DK is not a preview one (should be V1.0.0 or later) - LR won't work at all on preview board.

2. Ensure that you have configured PCNF0 and other registers properly. Here is a working example for 125kbit PHY.

RE: Example Radio Transmitter / Receiver on 52840

Eva_VdV — Thu, 13 Feb 2020 12:48:32 GMT

Hi,

Thanks for the reply.

I used the config from that example, at first it didn't work either.

But the problem appears to be in de read_packet function.

PHYEND and EVENTS_END never seem to come.

I changed the sequence simular to what that example does in the IRQ function, then packets arrive.

    NRF_RADIO->EVENTS_READY = 0U;
    // Enable radio and wait for ready
    NRF_RADIO->TASKS_RXEN = 1U;

    while (NRF_RADIO->EVENTS_ADDRESS == 0U)
    {
        // wait
    }
    NRF_RADIO->EVENTS_ADDRESS = 0;

    while( NRF_RADIO->EVENTS_DISABLED == 0 )
    {
    }
    NRF_RADIO->EVENTS_DISABLED = 0;

    if (NRF_RADIO->CRCSTATUS == 1U)
    {
        result = packet;
    }

Thanks.

RE: Example Radio Transmitter / Receiver on 52840

Håkon Alseth — Thu, 13 Feb 2020 09:26:54 GMT

Hi Eva,

There's added settings that needs to be set in NRF_RADIO->PCNF0. If you need to evaluate long range, I would recommend that you look at this example:

https://devzone.nordicsemi.com/f/nordic-q-a/43404/how-can-i-use-a-long-range-mode-in-the-proprietary-mode-in-the-nrf52840/170283#170283

Could you try this and see if this works better for you?

Kind regards,

Håkon