https://devzone.nordicsemi.com/f/nordic-q-a/33779/nrf24lu1-interrupt-latencyI am trying to create a TDMA based network with the nRF24LU1+. I understand that nRF51 and nRF52 have the ability to trigger the transmission of a radio packet upon timer event using GPIOTE, but this does not exist on the nRF24LU1+. Because of this, Ien-USTelligent Community 13Thu, 03 May 2018 00:31:34 GMThttps://devzone.nordicsemi.com/thread/130693?ContentTypeID=1Thu, 03 May 2018 00:31:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f0d97600-e09a-4f5e-85ae-aacb2a222f31Andrew Kohlsmith<p>Thank you @kenneth. It looks like I should be able to set up a timer interrupt as the highest priority and then flip the bit with very little context switching (saving registers) overhead. If I&#39;m reading correctly, though, it looks like there could be significant (relatively speaking) jitter since the 8051 core used on the nRF24LU1 can take up to 6 cycles (375ns @16MHz) to execute an instruction and I am sure the core will finish executing its current instruction before branching to an ISR.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/129787?ContentTypeID=1Wed, 25 Apr 2018 13:30:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:de6179b4-f5a2-4232-94cd-c8936e5a1f3bKenneth<p>The nRF24 series use a R8051 core from Cast, so you may find this useful:</p> <p><a href="http://www.cast-inc.com/blog/8051-interrupt-latency-designing-with-modern-8-bit-mcus">http://www.cast-inc.com/blog/8051-interrupt-latency-designing-with-modern-8-bit-mcus</a>&nbsp;</p> <p><a href="http://www.keil.com/support/docs/1808.htm">http://www.keil.com/support/docs/1808.htm</a>&nbsp;</p><div style="clear:both;"></div>