https://devzone.nordicsemi.com/f/nordic-q-a/10400/ppi-with-i2cHello, I use the interface I2C to communicate to the Light Sensor, and also use a timer to read the value back every 1 sec now. I&#39;m wondering that can I use the interface PPI to capture the data and put them in a buffer until other channel timeouten-USTelligent Community 13Tue, 24 Nov 2015 03:52:22 GMThttps://devzone.nordicsemi.com/thread/38617?ContentTypeID=1Tue, 24 Nov 2015 03:52:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e0f0ab69-6182-4674-a2e8-489a4580c649sara<p>Understood, thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/38616?ContentTypeID=1Mon, 23 Nov 2015 13:27:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a7fdc1e1-3d22-4c6d-aa54-26b2e5641a2dEinar Thorsrud<p>The nRF52 has TWI master (and slave) with Easy DMA, and should allow you to do what you have described without using the CPU (you would probably want to use RTC1 instead of timer 1 in order to save power).</p> <p>Unfortunately the nRF51 does not have DMA for TWI, so you will have to use the CPU. The TWI peripheral is single buffered so you will have to read every byte before a new byte can be received.</p><div style="clear:both;"></div>