MPLAB® Harmony v3 Peripheral Libraries on SAM L10: Step 4
Generate Code
When done, before generating code, click the Save icon.
Save the configuration in its default location when prompted.
Click on the Code Generate button as shown below to start generating code.
Click on the Generate button in the Generate Project window, keeping the default settings.
If prompted to save the configuration, click Save.
As the code is generated, the MPLAB® Harmony Configurator (MHC) displays the progress.
Examine the generated code.
The MHC will include all the MPLAB Harmony library files and generate the code based on the MHC selections. The generated code would add files and folders to your Harmony project as shown.
Among the generated code, notice the Peripheral Library files generated for Real-Time Clock (RTC), SERCOM 1 (as I²C), SERCOM 0 (as Universal Synchronous Asynchronous Receiver Transmitter (USART)), Direct Memory Access (DMA), External Interrupt Controller (EIC), and PORT peripherals. The MHC also generates template main file (main_l10.c).
Build the project.
Click on the Clean and Build icon 
and verify that the project builds successfully.
At this point, you are ready to start implementing your application code.
