https://devzone.nordicsemi.com/f/nordic-q-a/17973/how-to-enable-other-pipes-on-nrf24lu1Hi, Nordic I know pipe0 and pipe1 are be enabled on nRF24LU1 nRFgo SDK example for default PRX. Now I only to enable pipe0, disable pipe1. First, I use this function: hal_nrf_close_pipe(HAL_NRF_ALL) then I use hal_nrf_open_pipe(HAL_NRF_PIPE0en-USTelligent Community 13Mon, 28 Nov 2016 01:12:59 GMThttps://devzone.nordicsemi.com/thread/69307?ContentTypeID=1Mon, 28 Nov 2016 01:12:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:53af7698-8549-4549-9d4d-1ca3d0da48a7Chaw<p>Hi，I found, it&#39;s auto ack wrong, I keep PTX and PRX are same, now I can set pipe OK. Thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/69306?ContentTypeID=1Fri, 25 Nov 2016 12:53:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:008bf838-4567-4a66-bd42-7790c9f3a1faHung Bui<p>hal_nrf_open_pipe() should not return 0x02. Could you try to read EN_RXADDR register right after you call hal_nrf_close_pipe(HAL_NRF_ALL) and then after you call hal_nrf_open_pipe(HAL_NRF_PIPE0, false); ?</p> <p>When you send packet from TX side, do you set no_ACK to true ? You should set it to true since Auto ACK is disabled on PRX side.</p> <p>Are you using nRF24LU1+ on both sides ?</p><div style="clear:both;"></div>