NRF24L01+ Dynamic Payload configuration without ACK?

RE: NRF24L01+ Dynamic Payload configuration without ACK?

Håkon Alseth — Mon, 10 Feb 2014 15:58:55 GMT

Hi,

You are correct. Method 1 will remove the PCF from the packet. You should not need to set "EN_ACK_PAY", but it does not hurt if you want a generic "enable no-ack, and ack-payload" configuration. Note that this config must be set on both PRX and PTX.

-H

RE: NRF24L01+ Dynamic Payload configuration without ACK?

Shelby — Mon, 10 Feb 2014 15:01:10 GMT

You can set the chip into backwards-compatibility mode with former nRF24-series devices by clearing EN_AA and other registers, as described in Appendix B in the nrF24L01P datasheet. Then you must upload payloads using "W_TX_PAYLOAD".

Wouldn't this be using the older packet format which doesn't have the 9 bit control field and therefore not allow dynamic payloads? I'm only using nrF24L01P parts so don't need the backwards compatibility. I just need dynamic payloads without ACKs (don't have time for the overhead and the data would be stale by then). I'm assuming the 2nd method is the one I should be using? I hadn't tried setting EN_ACK_PAY yet as I didn't think it was required to use W_TX_PAYLOAD_NOACK (datasheets just stated EN_DYN_ACK).

RE: NRF24L01+ Dynamic Payload configuration without ACK?

Håkon Alseth — Mon, 10 Feb 2014 14:41:00 GMT

Hi,

You can set the chip into backwards-compatibility mode with former nRF24-series devices by clearing EN_AA and other registers, as described in Appendix B in the nrF24L01P datasheet. Then you must upload payloads using "W_TX_PAYLOAD".

Or you can use W_TX_PAYLOAD_NOACK + set (on both PRX and PTX) registers:

DYNPD for the specific pipes
EN_DPL
EN_ACK_PAY
EN_DYN_ACK

Best regards Håkon