https://devzone.nordicsemi.com/f/nordic-q-a/676/nrf51822-communicates-with-24l01I use the example &quot;Keil\ARM\Device\Nordic\nrf51822\Board\pca10001\led_radio_example&quot; and &quot;Keil\ARM\Device\Nordic\nrf51822\Board\pca10000\led_radio_example&quot; to communicates with 24L01 1 when I use nRF51822 to send 32bytes to 24L01,its all right. 2en-USTelligent Community 13Thu, 09 Jan 2014 14:04:22 GMThttps://devzone.nordicsemi.com/thread/3414?ContentTypeID=1Thu, 09 Jan 2014 14:04:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b752105a-4cd4-4192-96f5-f1f9cdb3a793Kenneth<p>Not sure exactly what is wrong here, I notice you are writing to the radio register directly, is it possible for you to use the ESB software library instead? For usage see the esb examples included in the nRF51 SDK.</p> <p>The nRF51 ESB software library enables an nRF51 device to communicate with a nRF24Lxx device using the ESB protocol.</p><div style="clear:both;"></div>