https://devzone.nordicsemi.com/f/nordic-q-a/78305/is-it-ok-not-to-design-the-reset-circuit-of-p0-21-pinExcuse me: 1、The customer wants to use p0.21 pin as General purpose I/O，Can the reset circuit of p0.21 pin be removed？ 2、The customer said that when a new nrf52832 chip is downloaded by SWD on the PCA10040 board for the first time, it download faileden-USTelligent Community 13Fri, 06 Aug 2021 13:32:11 GMThttps://devzone.nordicsemi.com/thread/323779?ContentTypeID=1Fri, 06 Aug 2021 13:32:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e016f85c-dfbf-4d6e-9038-1b9496a5a656ketiljo<p>1. Yes, P0.21 can be treated as any other GPIO</p> <p>2. Reset is not needed for programming to this must be caused by something else. Make sure GND detect is connected to ground&nbsp;</p><div style="clear:both;"></div>