How to Change MCU with MCUXpresso

[#1]

Recently I found some customers have a bit of problem when porting project from one MCU to another, so this article using simple steps demonstrates how to change MCU with MCUXpresso. There is also a video demonstrated the detail steps in attachment.

Pay attention, as MCUXpresso User Guide says: All projects are associated with a particular MCU at creation time. The target MCU determines the project memory layout, startup code, LinkServer flash driver, libraries, supporting sources,launch configuration options etc. etc. so changing a project’s associated MCU should not be undertaken unless you have a total grasp of the consequence of this change. Therefore rather than changing a project’s associated MCU, it is strongly recommended that instead a new project is generated for the desired MCU and this new project is edited as required.

However, on occasion it may be expedient to reset a project’s MCU (and associated SDK) and this can be achieved as follows. For example, changing lpc55s69 to lpc55s06, we need install SDKs for lpc55s69 and lpc55s06 before all the below steps.

1 - Change MCU & Package

1.1 – Change MCU

Right click “MCU” under Project tree, choose “Edit MCU”

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Uncheck ”Preserve memory configuration”(it is checked by default)->choose LPC55S06->there is a warning, choose Yes.

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We can see the Memory details changed to lpc55s06, then click ”Apply and close”.

1.2 – Change Package

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2 - Change Compiler Definitions

In Properties view->Settings->MCU Compiler ->Preprocessor, change the definition for CPU from LPC55S69JBD100 to LPC55S06JBD64 as below:

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3 – Change/add SDK driver for LPC55s06

Selected project, then click ”Manage SDK components”, choose the drivers our application used, for example, clock, power, usart.

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Click “OK”, then click “Yes” to update.

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Delete LPC55S69 device related files:

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Add “system_LPC55S06.c” and “system_LPC55S06.h” files:

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4 - Change startup file.

Delete LPC55s69 startup files, add “startup_lpc55s06.c”, we can find the startup file in any SDK demo.

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5 - Change board related files.

Refer to our own new board, change files under “board” folder, for example pins, uart number, here directly copy from SDK demo for LPCxpresso55s06 board.

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6 - Test the project  function with new board

Build project until no compile error, download and run it, result as below.

Alice_Yang_11-1627442661014.png

[danielholala]

Thanks for providing these instructions.

I my opinion: at least for switching the MCU to a compatible model within an mcu family (e.g., same device but with more memory), this process should be made a lot easier.

Also, whenever possible, keep the selected SDK components, see the "SDK components" issue here: also: https://community.nxp.com/t5/MCUXpresso-IDE/quot-Manage-SDK-Components-quot-stops-working-after-swit...