https://devzone.nordicsemi.com/f/nordic-q-a/17931/esb-tx-fail-event-but-rx-has-received-dataHi, Nordic engineer nRF52832 as ESB PTX, nRF24LU1 as ESB PRX same channel, crc, and match address and pipes, but from nRF52832 uart log, ESB TX fail event always show, but from nRF24LU1 PRX, RX has received data. then I use another nRF52832 asen-USTelligent Community 13Mon, 28 Nov 2016 00:21:27 GMThttps://devzone.nordicsemi.com/thread/69130?ContentTypeID=1Mon, 28 Nov 2016 00:21:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:54ed93eb-601c-4a63-9e5e-9c6f73e8aeebChaw<p>Hi, Bui now, I re-start one new project for nRF24, it work well, I do not know why. However, now it can work normal. I will close this issue. Maybe there is something wrong in keil project configuration.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/69129?ContentTypeID=1Thu, 24 Nov 2016 09:53:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:069adacd-d252-4da8-b4f6-b1ada6b70c43Hung Bui<p>@Chaw: Have you tested with the example provided in the SDK, or your own firmware ? Could you paste your configuration for the nRF52 and the nRF24LU1 here ? How did you set-up the AutoACK bit ? There could be an inverted value bug that need a workaround.</p><div style="clear:both;"></div>