https://devzone.nordicsemi.com/f/nordic-q-a/17531/power-cycling-nrf52---reset-pinHi, I&#39;m developed a custom nRF52 board, and the main method to reset is via power cycling the power source (battery). Using GCC, should I still keep: CFLAGS += -DCONFIG_GPIO_AS_PINRESET and ASMFLAGS += -DCONFIG_GPIO_AS_PINRESET in my makefile? en-USTelligent Community 13Tue, 08 Nov 2016 08:48:22 GMThttps://devzone.nordicsemi.com/thread/67399?ContentTypeID=1Tue, 08 Nov 2016 08:48:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eac48db8-c830-4d43-ab92-0fa083e29751Hung Bui<p>Could you provide us your schematic and layout ? Also please let me know how do you configuration the GPIO interrupt pin ? Have you tried to manually trigger the interrupt and check if it&#39;s received on the nRF52 ?</p> <p>If you don&#39;t configure the reset pin (disable it) would the issue still occur ?</p> <p>You can send your schematic and layout via PM or you can open a case in our MyPage support system on our website.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/67398?ContentTypeID=1Tue, 08 Nov 2016 00:02:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f6760cdc-40c9-442d-993c-8ca4d0704f0cleehong<p>Hi, My SPI Slave doesn&#39;t get properly initialized. My SPI slave triggers a GPIO pin &#39;high&#39; on the nRF52 when data is going into the nRF52. Works when connected to via JLINK debugger, but doesn&#39;t work when unplugged from the JLINK and going a power cycle.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/67400?ContentTypeID=1Mon, 07 Nov 2016 10:04:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3d58ad65-72fb-40fe-a287-06b7497507c2Hung Bui<p>Hi LeeHong,</p> <p>Could you explain a little more on what didn&#39;t work after reset ?</p> <p>I don&#39;t really understand why you want to connect pin 21 as Reset pin (in the firmware with the makefile script) if you can only do reset by power cycling ?</p><div style="clear:both;"></div>