Hello Dries,
Below is the full code that i find in adcdac_nss_example_1.
If i run the blinky demo it works!, perhaps i need to modify adcdac_nss_example_1 to include a main?
I tried running i2d_nss_example_1, this also works.
I have placed, adcdac_nss_example_1 in blinky demo folder, and when i debug i get these problems:: 

This is the code copied:
/*
* Copyright 2020 NXP.
* This software is owned or controlled by NXP and may only be used
* strictly in accordance with the applicable license terms. By expressly
* accepting such terms or by downloading, installing, activating and/or
* otherwise using the software, you are agreeing that you have read, and
* that you agree to comply with and are bound by, such license terms. If
* you do not agree to be bound by the applicable license terms, then you
* may not retain, install, activate or otherwise use the software.
*/
#include "board.h"
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
#pragma GCC diagnostic ignored "-Wunused-variable"
void adcdac_nss_example_1(void)
{
//! [adcdac_nss_example_1]
Chip_IOCON_SetPinConfig(NSS_IOCON, IOCON_ANA0_0, IOCON_FUNC_1);
Chip_ADCDAC_Init(NSS_ADCDAC0);
Chip_ADCDAC_SetMuxDAC(NSS_ADCDAC0, ADCDAC_IO_ANA0_0);
Chip_ADCDAC_SetModeDAC(NSS_ADCDAC0, ADCDAC_CONTINUOUS);
Chip_ADCDAC_WriteOutputDAC(NSS_ADCDAC0, 3000);
//! [adcdac_nss_example_1]
}
#pragma GCC diagnostic pop