Using pin 1 as GPIO breaks Bluetooth

[SKR]

Hi! I'm using nrf52832 and SDK 16. I have a custom board that doesn't have an external oscillator for low frequency clock and uses internal RC so pins 0 and 1 can be used as GPIOs. I use the following settings in sdk_config:

CLOCK_CONFIG_LF_SRC 0
CLOCK_CONFIG_LF_CAL_ENABLED 1
NRFX_CLOCK_CONFIG_LF_SRC 0
NRF_SDH_CLOCK_LF_SRC 0
NRF_SDH_CLOCK_LF_RC_CTIV 32
NRF_SDH_CLOCK_LF_RC_TEMP_CTIV 2
NRF_SDH_CLOCK_LF_ACCURACY 1

With LFC set to RC, the pins 0 & 1 should work as GPIOs. Everything works fine until I build a project that assigns an operation to pin 1 - Bluetooth suddenly fails to properly connect. Any idea what to look for? Am I missing any more settings?

[SKR]

I've checked again. There are 3 LF_SRCs in the config. They are all set to 0.

[run_ar]

Hi,

I am sorry for the late answer. As far as I can see this should be sufficient to make the gpio function. But maybe there is an issue I'm not aware off. Any chance you have firmware that can be used to recreate the behavior?