https://devzone.nordicsemi.com/f/nordic-q-a/9362/trouble-programming-flash-of-nrf52-preview-board-with-eclipse-marsI&#39;m using Eclipse Mars with gnuarmeclipse plugins to evaluate the new nrf52 preview board. After much fighting, I&#39;ve got the blinky example project building but now I can&#39;t get debugging started. My GDB Segger output looks like this: SEGGER J-Linken-USTelligent Community 13Fri, 09 Oct 2015 13:54:53 GMThttps://devzone.nordicsemi.com/thread/34561?ContentTypeID=1Fri, 09 Oct 2015 13:54:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:864ad35f-04a6-4797-826f-a805b2e0cc51Vidar Berg<p>Are you compiling without optimization and debug enabled? This is done by replacing the -O3 option with &#39;-00&#39; and add &#39;-g3&#39; in the CFLAGS variable found in the makefile. Was not able to spot any errors in the jlink log.</p><div style="clear:both;"></div>