https://devzone.nordicsemi.com/f/nordic-q-a/37169/nrf52832-gpio-pin-13-not-toggleHi: I am developing my project based on ble_app_uart example. The development bench is SDK13.0, the chip is nRF52832. One problem I have now is that: I configure Pin12 and Pin13 as output to drive LEDs, and try to toggle it in 100Hz. The result isen-USTelligent Community 13Mon, 06 Aug 2018 11:23:02 GMThttps://devzone.nordicsemi.com/thread/143001?ContentTypeID=1Mon, 06 Aug 2018 11:23:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d73797aa-874f-4b12-8a1c-6f2d5a56681aJ&#248;rgen Holmefjord<p>Are you using our <a href="https://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF52-DK">nRF52 DK</a> board, or do you have a custom board containing the nRF52832 IC?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/142913?ContentTypeID=1Sun, 05 Aug 2018 00:34:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1d368cba-2fb8-45d8-b0ee-a1933000d400kudos1022<p>I initialize the Pin12 and Pin13 as output in the main function.</p><div style="clear:both;"></div>