nRF24L01P DK communicates with nRF2401E DK

RE: nRF24L01P DK communicates with nRF2401E DK

flyinggirlxhx — Mon, 29 Sep 2014 05:09:36 GMT

Hi, to the question, without more ideas, I need your help to resolve it so that the whole project can go on. thanks so much, waiting your answer.

RE: nRF24L01P DK communicates with nRF2401E DK

flyinggirlxhx — Fri, 26 Sep 2014 14:24:43 GMT

In the whole project, only RX_DR IRQ can be generated, with the following settings: EN_AA=0,ARC=0,W_TX_PAYLOAD_NOACK. After you have received 3 packages, it always stops, with periodic interrupts. why must hold the transmitter in TX_EN for longer than 4 ms?

RE: nRF24L01P DK communicates with nRF2401E DK

Asbjørn — Fri, 26 Sep 2014 11:11:29 GMT

Do you get any IRQ on the nRF24L01+? What kind of IRQ do you get? After you have received 3 packages, does it always stop or sometimes? Are you getting interrupts still? Are you holding the transmitter in TX_EN for longer than 4 ms?

RE: nRF24L01P DK communicates with nRF2401E DK

flyinggirlxhx — Fri, 26 Sep 2014 05:57:44 GMT

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.

RE: nRF24L01P DK communicates with nRF2401E DK

Asbjørn — Thu, 25 Sep 2014 12:44:25 GMT

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.

RE: nRF24L01P DK communicates with nRF2401E DK

flyinggirlxhx — Wed, 24 Sep 2014 01:06:01 GMT

To be compatible between the two chips, they work in the shockBurst mode,EN_AA=0; ARC=0; W_TX_PAYLOAD_NOACK; disable MAX_RT and TX_DS, set tx/rx address width as 2 bytes compellently. So are these settings right? do they affect transmit-receive or some registers？

RE: nRF24L01P DK communicates with nRF2401E DK

flyinggirlxhx — Tue, 23 Sep 2014 01:37:43 GMT

everytime when I receive a msg, after handling: [spiRW(FLUSH_RX); spiRWReg(WRITE_REG+STATUS, RX_DR);], these orders will be used. adding transmitting(receiving), why it can't receiving(transmitting) continuely? even in the LMP3 mode, it doesn't work normally.

RE: nRF24L01P DK communicates with nRF2401E DK

Asbjørn — Fri, 19 Sep 2014 15:26:10 GMT

Since you can receive a few packages before it breaks it sounds like you don't clear the RX FIFO. If the RX FIFO gets full it will discard any new incoming packages and the behavior will be as you describe. Please ensure that the RX FIFO is cleared after a received payload.

RE: nRF24L01P DK communicates with nRF2401E DK

flyinggirlxhx — Fri, 19 Sep 2014 06:52:07 GMT

welcome your any ideas!