https://devzone.nordicsemi.com/f/nordic-q-a/58180/nrf52832-chip-modify-nrf-channel-problemModify the channel in the receiving mode, call the &quot;nrf_esb_stop_rx&quot; function in the &quot;nrf_esb_event_handler&quot; function, but what if the &quot;if (m_nrf_esb_mainstate == NRF_ESB_STATE_PRX)&quot; condition does not hold?en-USTelligent Community 13Tue, 25 Feb 2020 15:16:14 GMThttps://devzone.nordicsemi.com/thread/236315?ContentTypeID=1Tue, 25 Feb 2020 15:16:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a16d1b31-3701-4162-9212-90c696dbf792Jared<p>Hi,</p> <p>If neither&nbsp;<span>m_nrf_esb_mainstate == NRF_ESB_STATE_PRX or&nbsp;m_nrf_esb_mainstate ==&nbsp;</span>NRF_ESB_STATE_PRX_SEND_ACK, then&nbsp;<span>nrf_esb_stop_rx will return&nbsp;</span>NRF_ESB_ERROR_NOT_IN_RX_MODE, which means you&#39;re trying to stop receiving&nbsp;mode when the Radio isn&#39;t in receiving mode already.&nbsp;</p> <p>regards</p> <p>Jared</p><div style="clear:both;"></div>