https://devzone.nordicsemi.com/f/nordic-q-a/25411/uart-interrupt-event-handling-on-sdk14-0-0Hi I have an application where I cannot use the FIFO buffers (HW or SW). Therefore I need an interrupt for each received byte. If I try to use the uart driver (nrf_drv_uart.c) I have problems enabling the RXDRDY event. Or more precise: If I enableen-USTelligent Community 13Sat, 23 Sep 2017 11:21:06 GMThttps://devzone.nordicsemi.com/thread/100155?ContentTypeID=1Sat, 23 Sep 2017 11:21:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f80799d0-be72-403e-bd4d-5e24ed5f1d08Kasper Leonhardt<p>However it works if I just calls nrf_drv_uart_rx for each byte. I can live with that.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/100154?ContentTypeID=1Sat, 23 Sep 2017 10:57:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:244f36da-b552-44da-b537-aae72463383eKasper Leonhardt<p>Sorry, I ment nrf_drv_uart_rx.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/100153?ContentTypeID=1Sat, 23 Sep 2017 10:54:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bc599761-64f7-4788-94b6-68da3c67534cKasper Leonhardt<p>Do I have to call nrf_drv_uart_rx each time I expects data to be received?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/100152?ContentTypeID=1Sat, 23 Sep 2017 10:49:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:971e6d64-6fde-48aa-a7c0-6c34628c6168Kasper Leonhardt<p>Then please let me know how to use the nrf_drv_uart in the most basic way without using the FIFO and DMA. If it is not possible to get a receive event when a byte is received I cannot see the purpose of the driver (at least when I do not want to use DMA/FIFO). The transmit events works fine.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/100151?ContentTypeID=1Sat, 23 Sep 2017 10:32:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4bde48a0-f0d4-451a-b5b9-605e16f993c0Turbo J<blockquote> <p>Therefore I need an interrupt for each received byte.</p> </blockquote> <p>That also means you will have to drop nrf_drv_uart altogether and implement the UART interrupt service function(s) yourself using the reference manual.</p> <p>Trying to (mis-)use the nrf_drv_uart driver may actually be much more difficult in your case.</p> <p>Note that RXTO event only ever occures after the STOPRX task has been triggered.</p><div style="clear:both;"></div>