This article introduces how to create a custom board MCUXpresso SDK and how to use it, mainly includes three parts:
Part1: Generating a Board Support Configuration (.mex)
Part2: Create a Custom Board SDK Using the Board SDK Wizard
Part3. Using the Custom SDK to Create a New Project
MCUXpresso IDE v11.1.1, MCUXpresso SDK for LPC845, LPC845-BRK board.
This method works for all NXP mcu which support by MCUXpresso SDK.
About detail steps, please refer to attachment.