Harmony v3 Peripheral Libraries on PIC32MZ EF: Step 4
Step 4: Generate Code
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Navigate to the Projects tab to view the project tree structure.
MHC includes all the MPLAB Harmony library files and generates code based on the selections. The generated code adds files and folders to your Harmony project. Among the generated code, notice the Peripheral Library files generated for TMR1, I²C1, UART6, Direct Memory Access (DMA), cache, and General Purpose Input/Output (GPIO) peripherals. The MHC also generates a template main file (main_pic32mz.c).
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Build the project by clicking 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.