https://devzone.nordicsemi.com/f/nordic-q-a/28446/gazell-preloadHi ,all I have a problem in my project .I want to use gzp preload ack feature .When the host receives datas ,I would use this function &quot;void gzp_preload_ack(uint8_t* src, uint8_t length, uint8_t pipe)&quot; to send datas to the device .I think when theen-USTelligent Community 13Mon, 18 Dec 2017 12:02:19 GMThttps://devzone.nordicsemi.com/thread/112365?ContentTypeID=1Mon, 18 Dec 2017 12:02:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5b74cf38-4e2f-49ac-957e-0f2a56ec5d4dovrebekk<p>No problem Anna, I am glad to hear you figured it out :)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/112364?ContentTypeID=1Mon, 18 Dec 2017 12:00:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b393ec6-b91b-4086-9f4d-3758afa04355anna<p>Thank you very much . I feel very sorry for not replying you for a long time .I just want to say that I solved it .If we want to use preload ack , just putting the payload to the fifo (nrf_gzll_add_packet_to_tx_fifo) when the host is not buzy receiving packets .when the host received payloads ,the host will send itself payload to device too.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/112366?ContentTypeID=1Thu, 03 Aug 2017 13:09:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b6a2f1d1-f8e5-4374-8648-da701719ba0dovrebekk<p>Can you tell me the type of chip, development kit and SDK you are using?</p> <p>Best regards</p><div style="clear:both;"></div>