https://devzone.nordicsemi.com/f/nordic-q-a/17074/irq-pin-nrf24l01-unresponsive-unable-to-transmitHello, I bought few nRF24L01+ modules and I integrated them in some custom PCBs that I designed. I haven&#39;t been able to transmit information: The TX FIFO is full (in FIFO_STATUS register TX_FULL = 1) The IRQ signal is never cleared en-USTelligent Community 13Mon, 17 Oct 2016 08:47:19 GMThttps://devzone.nordicsemi.com/thread/65483?ContentTypeID=1Mon, 17 Oct 2016 08:47:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:60583884-4a63-49e0-bbd7-cec9ed78697covrebekk<p>Maybe I just misunderstand your description, but are you really uploading the TX payload before you turn on the PWR_UP bit in the CONFIG register?</p> <p>Normally you would power up the chip, configure the RF parameters, upload the packet, and then pulse CE.</p><div style="clear:both;"></div>