Hi,
i'm doing my own bootloader and i want to use external flash to download image trough a spi. The bootloader project based on example from SDK11, now just an external flash interface is added by me.The problem is that spi only works if softdevice is already enabled ( calling nrf_drv_spi_xfer(); before ble_stack_init(!app_reset); hangs system and no spi activity on oscilloscope). Is my suggestion true? If so, how to enable spi functionality without the softdevice?