nRF24L01P DK communicates with nRF2401E DK

[flyinggirlxhx]

Recently, I try to programme nRF24L01P DK communicating with nRF2401e1 DK in shockBurst mode, transmitting and receiving,unfortunately，which does not success normally. first, the nRF24L01P DK as PTX transmitts messages to the nRF2401e1 DK continuely, the operation is ok; then, when the nRF2401e1 DK transmitts a rf msg to the nRF24L01P DK continuely(only receiving not sending), it is also all right; however, receiving after transmitting continuely, the PTX nRF24L01P DK, only once or twice and can't receive again when transmitted again by the nRF2401e1 DK。

With setting radio configuration: TXPower,the same frequency channel, tx/rx address, payload width, ,and other paras, It still didn't work.

So I would like to ask if they can communicate by some special settings,such as some registers? or other reasons? Thanks so much ! wish your reply as soon as possible.

[Asbjørn]

You should use W_TX_PAYLOAD and disable ENhanced Shockburst by following the steps in Appendix B in the nRF24L01+ product specification. Also, I would recommend to use longer address, 2 bytes is statistically higher risk to get a false address match from noise.

EDIT: After some investigation it proved to be an issue with the RX FIFO buffer overflow. Needed to flush RX FIFO correctly for this setup.

[flyinggirlxhx]

adding setting ACTIVATE and FEATURE register to activate W_TX_PAYLOAD_NOACK; in addition, set-ting CSN_LOW,CE_HIGH before entering LPM3, makes with sleeping mode, it can receive all msg continuely but not twice or three times. it is a progress. however, adding transmitting, just 3 timers received msg again. As to 2 bytes address, this operation has been done in previous projects without problems.