https://devzone.nordicsemi.com/f/nordic-q-a/4944/nrf24l01-tx-status-flag-does-not-clear-rx-status-flag-always-zeroHi, I&#39;m using two STM32F407 discovery kits with one nrf24L01+ module attached to each kit. Here is my common init code (common for both Tx and Rx): RF_Init(); /* set CE and CSN to initialization value */ delay(100); RF_WriteRegister(RF24_RF_SETUPen-USTelligent Community 13Wed, 21 Jan 2015 15:32:02 GMThttps://devzone.nordicsemi.com/thread/17433?ContentTypeID=1Wed, 21 Jan 2015 15:32:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:64cdc4d5-1d24-4352-8aad-333288734cafAsbj&#248;rn<p>Since you have disable auto-acknowledgement on the link the TX_DS will be set immediately when you send a package. It indicates that you have sent a package. When are you reading the STATUS register? I see you are sending a package every 2 ms and for every package TX_DS will be set. So unless you clear the TX_DS and read the STATUS register before the next payload is sent, you will always see TX_DS = 1. Have you enabled the interrupt on TX_DS?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/17432?ContentTypeID=1Sun, 18 Jan 2015 07:55:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2cdb0250-8022-476a-8205-bd5fb00300c8RSen<p>Hi People.....Any inputs what i might have screwed up ?</p> <p>Thanks and Regards, R.Senthil.</p><div style="clear:both;"></div>