We are using SDK 17.1.0 with SoC nRF52832 and Soft Device S132.
We want to configure the soft device to enable the TX and RX GPIOs to talk to off-chip power amplifier.
Looks like this can only be done after the Soft Device has been enabled but before a client establishes a connection.
In a previous generation of this product we modified the stock SDK file "libraries\bootloader\ble_dfu\nrf_dfu_ble.c" to make this happen before calling the function "advertising_start()".
However we want to have a cleaner mechanism where we do not modify files in the SDK (or maintain a modified copy elsewhere).
I tried doing so in the DFU observer call back but if I do so in either of the events 'NRF_DFU_EVT_DFU_INITIALIZED' or 'NRF_DFU_EVT_TRANSPORT_ACTIVATED' I get the error 'INVALID_STATE'.
Is there a way to register a callback that will be executed after the Soft Device is enabled and just prior to the first advertisement, but before any DFU clients connect to the device?
Cheers
RMV
