https://devzone.nordicsemi.com/f/nordic-q-a/4939/gazell-internal-assertHello, i&#39;m using nrf51422 with gazell protocol. Here is my interrupt on success code void nrf_gzll_device_tx_success(uint32_t pipe, nrf_gzll_device_tx_info_t tx_info) { uint32_t uiTmp; //reload gazell watchdog timer NRF_WDT-&gt;RR[WDT_GZLL_RELOADen-USTelligent Community 13Wed, 21 Jan 2015 15:34:28 GMThttps://devzone.nordicsemi.com/thread/17424?ContentTypeID=1Wed, 21 Jan 2015 15:34:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:31623dd1-2fbe-4b19-99c2-9dcfe37e817bAsbj&#248;rn<p>Why are you ignoring the interrupts? The error code you refer to is most likely related to receiver buffer overflow based on the fact that you are not handling or flush the RX FIFO. So the receive buffer (RX FIFO) might go full and give you an assert. If you flush the RX FIFO after every interrupt, does the same thing still happen?</p><div style="clear:both;"></div>