default state of GPIO

[crabam]

Hi,

I would like to know what is the default state of  GPIO pins when nRF9160 is power ON for the first time, and it has the pre-programmed FW from Nordic

[Håkon Alseth]

Hi,

 

The application is empty when you receive devices, meaning that the registers for GPIOs is also with its reset value (input, internal pin buffer disabled):

https://infocenter.nordicsemi.com/topic/ps_nrf9160/gpio.html?cp=2_0_0_5_3_3_10#register.PIN_CNF

The nRF9160 is loaded with a production test image modem firmware, which you'll need to update to your wanted modem firmware version (latest is mfw v1.3.2):

https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/at_version.html?cp=2_1_2

https://www.nordicsemi.com/Products/nRF9160/Download?lang=en#infotabs

 

Kind regards,

Håkon