Override of ctx and crx-gpios when using MPSL

RE: Override of ctx and crx-gpios when using MPSL

Sigurd — Fri, 02 Jul 2021 10:22:12 GMT

You could try to use nrfx_ppi_channel_disable() on the ppi_channels that are used/allocated by MPSL FEM, alternatively nrfx_ppi_channel_free().

Alternatively, mpsl_uninit() (but that function assumes no protocol stacks are running, and no timeslots are requested. All initialized protocol stacks need to be stopped before calling that function. )

RE: Override of ctx and crx-gpios when using MPSL

Jon — Tue, 22 Jun 2021 17:37:32 GMT

Unfortunately those do not work. We are using the simple_gpio FEM setup (which ultimately calls mpsl_fem_simple_gpio_interface_config_set). I tried all of the API's you suggested, but the PPI channels still appear to be overriding the CTX and CRX pins that are configured in the mpsl_fem_simple_gpio_interface_config_set() call.

RE: Override of ctx and crx-gpios when using MPSL

Sigurd — Mon, 21 Jun 2021 12:27:43 GMT

Hi,

You could try to disable the MPSL FEM, here are some APIs you could try to use:

mpsl_fem_pa_configuration_clear()
mpsl_fem_lna_configuration_clear()
mpsl_fem_deactivate_now()

mpsl_fem_cleanup()

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/mpsl/doc/api.html#mpsl-fem