Low Power Application on SAM L10 Using MPLAB® Harmony v3 Peripheral Libraries: Step 1

Last modified by Microchip on 2023/11/10 11:00

Verify Whether the MHC Plug-in is Installed in MPLAB® X IDE

Verify that MPLAB® Harmony Configurator (MHC) is installed.

Launch MPLAB X IDE from the Microsoft Windows® Start menu. Close any projects and files that are currently open.
Go to Tools > Embedded.

You will see MPLAB® Harmony 3 Configurator in the menu.

mhc setup​​​

If you don't see it in the menu, install MHC.

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Set Up MHC Plug-in Window to Open in Standalone Mode

Go to Tools > Options. You will see the Options window open.

mhc launch mode​​​​​​

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Go to Plugins > Window Manager and select Standalone mode. Click Apply and then click OK.

standalone setup​​​

  • When you launch MHC for the first time, it displays a prompt asking for the mode in which you would like to use MHC.
    • Standalone mode (as a separate window)
    • Native mode (as an embedded window in MPLAB X)
  • Standalone mode is the default mode.
  • MHC will launch in the operating mode selected the first time, every time you launch MHC.
  • Step 1.2 above shows a way to change the MHC operating mode.

For this lab, MHC is configured to operate in Standalone mode.

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Create MPLAB Harmony v3 Project Using MPLAB X IDE

Select File > New Project from the main IDE menu.

​Close all existing opened projects before you start creating a new project.

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In the Categories pane of the New Project dialog window, select Microchip Embedded. In the Projects pane, select 32-bit MPLAB Harmony 3 Project, then click Next.

project creation setup

If 32-bit MPLAB Harmony 3 Project is not displayed, install MHC.

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Browse to the folder you downloaded the framework to in the Framework Path edit box. If you haven't done this, or want to download it to a different folder, click the Launch Content Manager button, then click Next.

For more information on the content manager, see the "MPLAB Harmony v3 Configurator Overview" page.

project path setup

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In the Project Settings window, apply the following settings:

  • Location: Indicates the path to the root folder of the new project. All project files will be placed inside this folder. The project location can be any valid path, for example, <Your_folder>\dev\saml10_low_power.
  • Folder: Indicates the name of the MPLABX .X folder. Enter "sam_l10_xpro" to create a sam_l10_xpro.X folder.
  • Name: Indicates the name of the project that will be shown in MPLAB X IDE. Enter "low_power_sam_l10_xpro" to set the project's name.

Note: The Path box is read-only. It will update as you make changes to the entries.

  • Click Next to proceed to Configuration Settings.

project naming setup

Clicking on the Show Visual Help button will open a help window, providing a detailed description of the various fields in the Project Settings window.

project naming setup help

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Follow the steps below to set the project’s Configuration Settings.

  • Name: Enter the configuration name as "sam_l10_xpro".
  • Target Device: Select ATSAML10E16A as the target device.

Note: You can select the Device Family or enter a partial device name to filter the list in Target Device to make it easier to locate the desired device.

After selecting the target device, click Finish to launch the MHC.

project setup finish

The New Project Wizard opens a Configuration Database Setup window to allow you to review the packages that will be used by the current project.

Click Launch to launch the MHC tool with the selected packages.

mhc launch step

The MHC plug-in’s main window for the project will be displayed.

launched mhc view

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Before proceeding, set up the compiler toolchain. Click on the Projects tab on the top left pane in MPLAB X IDE. Right-click on the project name low_power_sam_l10_xpro and go to Properties.

project view​​

Make sure that XC32 (v2.40) is selected as the Compiler Toolchain for XC32. Click on Apply and then click on OK.

xc32 setup

Tool Tip: If you closed MHC accidentally and would like to open it again, go to Tools > Embedded > MPLAB Harmony 3 Configurator in MPLAB X IDE.

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Configure Clock Settings

Launch Clock Easy View by going to the Tools menu of the MHC window and then selecting Clock Configuration.

clock configuration open

A new window, Clock Easy View, is opened inside MHC.

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The Clock Easy View window will then appear on your screen.
clock configuration setup

Tool Tip:

  • The Clock Easy View window can be minimized by clicking the minimize button, as shown below.

Tool tip minimize button

  • After minimizing the Clock Easy View window, you can see a small Clock Easy View tab at the bottom-left in MHC, as shown below.

tool tip clock easy view tab

  • The Clock Easy View window can be maximized by clicking the maximize button or by double-clicking on the Clock Easy View window, as shown below.

tool tip maximize button

  • These tips apply to all other plug-in managers like Pin Configuration, DMA Configuration, Event System Configuration, and EVIC Configuration.

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Verify the 16 MHz Internal Oscillator (OSC16M) is enabled and select the 12 MHz ouput in the Oscillator Controller box.

Verify the 16 MHz Internal Oscillator (OSC16M) is enabled and select the 12 MHz ouput in the Oscillator Controller box

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Verify the Digital Frequecy Locked Loop (DFLL) is disabled.

Verify the Digital Frequecy Locked Loop (DFLL) is disabled

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Set OSC16M as the Generic Clock Generator 0 (GCLK0) source clock.

Set OSC16M as the Generic Clock Generator 0 (GCLK0) source clock

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Enable GCLK1 and set OSC16M as the GCLK1 clock source.

Enable GCLK1 and set OSC16M as the GCLK1 clock source.

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Enable GCLK2 and set OSCULP32K as the GCLK2 clock source. Then, click on the Settings (wheel) button in the top right.

Enable GCLK2 and set OSCULP32K as the GCLK2 clock source

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The Advanced Settings window will appear after clicking on the Settings (wheel) button of GCLK2. Check the box for GCLK should keep running in Standby mode.

gclk2 advanced settings

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