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

Step 1.1: Verify Whether the MCC Plug-in is Installed in MPLAB® X IDE


Verify that MPLAB® Code Configurator (MCC) 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® Code Configurator v5: Open/Close in the menu.


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

Step 1.2: 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.


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


If 32-bit MCC Harmony Project is not displayed, install MCC.


Browse to the folder you downloaded the framework to in the Framework Path edit box. Then click Next.

For more information on the content manager, see the "Download MPLAB Code Configurator Framework" section of the "MPLAB Code Configurator Overview" page.



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: C:\microchip\harmony\v3\training\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.

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.



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 MCC.


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.


The MCC content manager window is displayed. Click Select MPLAB Harmony (by default this option is selected).


Click Finish to launch the MCC tool with the packages.



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



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.
Go to Set Configuration and click on the Customize...


Make sure that XC32 (v4.30) is selected as the Compiler Toolchain for XC32. Click on Apply and then click on OK.


Tool Tip:
If you closed MCC accidently and would like to open it again, go to Tools > Embedded > MPLAB® Code Configurator v5: Open/Close in MPLAB X IDE.

Step 1.3: Configure Clock Settings


Launch Clock Easy View by going to the Project Graph menu of the MCC window and then selecting Plugins > Clock Configuration.


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


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


Tool Tip:

  • The Clock Easy View window can be minimized by clicking the minimize button, as shown below.
  • After minimizing the Clock Easy View window, you can see a small Clock Easy View tab at the bottom-left in MCC, as shown below.
  • 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.
  • These tips apply to all other plug-in managers like Pin Configuration, DMA Configuration, Event System Configuration, and EVIC Configuration.


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



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



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



Enable GCLK1 and set OSC16M as the GCLK1 clock source.



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



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.


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