https://devzone.nordicsemi.com/f/nordic-q-a/6806/enhanced-shockburst-mode-with-out-pre-loaded-replyI am using the nRF24le1 in Enhanced Shockburst mode. The datasheet describes how it is possible to upload acknowledge packets, W_ACK_PAYLOAD, to the TX FIFO. And then the PRX will send the acknowledge as soon as it receives a packet. I would likeen-USTelligent Community 13Mon, 04 May 2015 22:38:23 GMThttps://devzone.nordicsemi.com/thread/23965?ContentTypeID=1Mon, 04 May 2015 22:38:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:28b6fc7a-5e9e-4d2e-9d0b-213791f5667aGustav<p>Hejsan Torbjørn,</p> <p>Thanks for your answer, but it came too late. In the last couple of days, I have worked hard to verify the solution with immediate acknowledge. It seems to work. There is even a reasonable safety margin.</p> <p>I will take your reply into account, and be extra careful not to have any unnecessary delay between packet received and upload of acknowledge. This solution makes my software so much simpler.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/23964?ContentTypeID=1Mon, 04 May 2015 14:07:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a1515dd4-c682-4bd2-9706-28e6dcd9082eovrebekk<p>Hi</p> <p>I would recommend going for the two packet solution, where you send a second dummy packet to pick up the ACK payload.</p> <p>It is possible that there is a time window in which you can actually upload a packet and have it sent immediately, but this hasn&#39;t been tested by us so please use it at your own risk ;)</p> <p>Regards Torbjørn</p><div style="clear:both;"></div>