RE: GPIO pin reassignment (coexistence pins) for nRF5340 + nRF7002EK (NCS v3.0.0)

Amanda Hsieh — Wed, 18 Mar 2026 13:28:06 GMT

Happy to help. 🙂

RE: GPIO pin reassignment (coexistence pins) for nRF5340 + nRF7002EK (NCS v3.0.0)

gwan0624 — Wed, 18 Mar 2026 02:11:14 GMT

I appreciate your help. It has been quite challenging to find the specific documentation I need, but your explanation has resolved my confusion

RE: GPIO pin reassignment (coexistence pins) for nRF5340 + nRF7002EK (NCS v3.0.0)

Amanda Hsieh — Tue, 17 Mar 2026 15:02:42 GMT

Hi,

[quote user=""]

However, for the coexistence pins, I could not find any files in the build folder that reference the nrf_radio_coex node.

Were these pin changes actually applied? Or are they being ignored?

[/quote]

See

https://github.com/nrfconnect/sdk-nrf/blob/v3.2.4/subsys/mpsl/cx/1wire/mpsl_cx_1wire.c#L32

https://github.com/nrfconnect/sdk-nrf/blob/v3.2.4/subsys/mpsl/cx/Kconfig

https://github.com/nrfconnect/sdk-nrf/blob/v3.2.4/subsys/mpsl/cx/nrf700x/mpsl_cx_nrf700x.c#L49

https://github.com/nrfconnect/sdk-nrf/blob/v3.2.4/subsys/mpsl/cx/3wire/mpsl_cx_3wire.c#L35

[quote user=""]I have searched through the shield files but could not find the definition for SW_CTRL0. Where is this pin defined?[/quote]

SW_CTRL0 is an output signal from the nRF70 Series device. It is mandatory for 3-wire and 4-wire Shared Antenna mode, and optional otherwise. It corresponds to the Bluetooth LE/IEEE 802.15.4 signal RF_SW_CTRL0 and is used for antenna switch control in Shared Antenna mode. See nRF7002 coexistence.

Regards,
Amanda H.