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How to enable watchdog nRF9160

Hi,

I want to enable watchdog in  nRF9160.

I referred code in "C:\nrf9160\ncs\zephyr\tests\drivers\watchdog\wdt_basic_api" and tried enabling watchdog and added the watchdog code my application, but it did not work.

In prj.conf  added"CONFIG_WATCHDOG=y" and system got stuck in boot up and log is below

.........................
SPM: NS image at 0x8000


SPM: NS MSP at 0x20023d80


SPM: NS reset vector at 0xb139


SPM: prepare to jump to Non-Secure image.

System got stuck with above log and application is not starting.

Please help me to enable watchdog in nRF9160 and point to sample
watchdog application.

Thanks.

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