https://devzone.nordicsemi.com/f/nordic-q-a/52665/application-timer-in-secure-bootloaderDear team, Device - nRF52832 SDK - nRF_SDK_15.0.0 Softdevice - s132_nrf_6.0.0 IDE - Segger embedded studio My application needs to toggle one gpio pin using app timer in secure bootloader code. I tried to create app timer in bootloader code but advertisementen-USTelligent Community 13Fri, 27 Sep 2019 14:45:19 GMThttps://devzone.nordicsemi.com/thread/212334?ContentTypeID=1Fri, 27 Sep 2019 14:45:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a750093c-4297-42a6-b7dd-49ba093a0e2cPrajapati<p>Okay thank problem is solved.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/212303?ContentTypeID=1Fri, 27 Sep 2019 13:28:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:16e3ef40-43d8-471f-a3b5-4bd45c5725bfEinar Thorsrud<p>Hi,</p> <p>The first thing that comes to mind is that the bootloader already uses the app_timer, with this code you call&nbsp;app_timer_init() twice (see&nbsp;components\libraries\bootloader\nrf_bootloader_dfu_timers.c). Other then that, I wonder if you have debugged to see what is happening? Since it doe snot advertise, I suspect an error check might have been hit. Can you test with the debug bootloader with RTT logging and see what you get?</p><div style="clear:both;"></div>