https://devzone.nordicsemi.com/f/nordic-q-a/21675/nrf24l01p-delaysHello, i&#39;m using a microcontroller connected to a nrf24l01p in rx mode,after receiving a packet it writes the ack for the next transaction,it only works if i add a delay (about 500us) before sending the data but in the documentation says that data canen-USTelligent Community 13Sat, 29 Apr 2017 16:32:44 GMThttps://devzone.nordicsemi.com/thread/85149?ContentTypeID=1Sat, 29 Apr 2017 16:32:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6a61c82a-3aa8-426c-b812-c5cb6126847eoctavio<p>Problem solved. I flushed the tx bufer before the ack transmission completed,also changed to rx mode before the packet had time to be transmitted.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/85148?ContentTypeID=1Thu, 27 Apr 2017 12:26:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0ca9d0ec-8af0-41ac-89a1-40c15be1ff3bHung Bui<p>Hi Octavio,</p> <p>What exactly happened if you simply queue the ack payload for the next transaction when you receive a packet ? If you have a look at Figure 9 at 7.4.1 in the nRF24L01P spec you can see that we have 3 ACK packet buffer available. I don&#39;t see any reason why it shouldn&#39;t work.</p> <p>When you switch from rx to tx, which delay did you get compare to what you expect ?</p><div style="clear:both;"></div>