https://devzone.nordicsemi.com/f/nordic-q-a/6677/slow-twi-single-byte-readsI need to poll a NMEA data stream and it&#39;s easiest getting a byte at a time, but it&#39;s dropping to 30ms between individual reads in this loop: uint8_t next = 0; uint8_t ref = 6; uint8_t readbuf[2] = {0}; while(next != &#39;\n&#39;) { nrf_gpio_pin_seten-USTelligent Community 13Fri, 24 Apr 2015 07:23:37 GMThttps://devzone.nordicsemi.com/thread/23426?ContentTypeID=1Fri, 24 Apr 2015 07:23:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eb7fd116-3d90-41bc-b0f4-fd3a8bdad3e0MartinBL<p>Hi. I can&#39;t see any obvious errors. Could it be your NMEA device that is slow? Are you able to measure where in your code your device is pausing?</p><div style="clear:both;"></div>