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# 3.2.1 Getting Started on PIC32CK GC01 Curiosity Ultra Development Board

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## Description

This application demonstrates an LED toggle (LED0 toggles when the switch SW0 is pressed) on a timeout basis and print the LED toggling rate on the serial terminal. The periodicity of the timeout will change from 500 milliseconds to one second, two seconds, four seconds, and back to 500 milliseconds every time the user presses the switch SW0 on the PIC32CK GC01 Curiosity Ultra Development Board.

The demo application has an extended functionality to read and print the current room temperature periodically when the extension header (EXT1) is plugged with the I/O1 Xplained Pro Extension Kit. The temperature reading is displayed on a serial console periodically.

## Modules/Technology Used

- Peripheral Modules
  - EIC
  - RTC
  - GPIO
  - SERCOM (I2C)
  - SERCOM (UART)
  - DMA
- System Services
  - STDIO

## Hardware Used

- PIC32CK GC01 Curiosity Ultra Development Board
- I/O1 Xplained Pro Extension Kit

## Software/Tools Used

This project has been verified to work with the following versions of software tools:

Refer Project Manifest presents in harmony-manifest-success.yml under the project folder firmware/src/config/pic32ck_gc01_cult.

- Refer the Release Notes to know the MPLAB X IDE and MCC Plugin version.
- Any Serial Terminal application such as Tera Term terminal application.

Because Microchip regularly updates tools, occasionally issue(s) could be discovered while using the newer versions of the tools. If the project does not seem to work and version incompatibility is suspected, it is recommended to double-check and use the same versions that the project was tested with. To download original version of MPLAB Harmony v3 packages, refer to document How to Use the MPLAB Harmony v3 Project Manifest Feature (DS90003305).

## Hardware Setup 1

- Connect the Type-A male to Micro-B USB cable to Micro-B DEBUG USB port (J900) to program and debug the PIC32CK GC Curiosity Ultra Development Board.

## Hardware Setup 2

- Connect the PIC32CK GC01 Curiosity Ultra Development Board to the Host PC as a USB Device through a Type-A male to micro-B USB cable connected to Micro-B Debug USB (J900) port.
- To test the extended functionality, connect the I/O1 Xplained Pro Extension Kit (Temperature Sensor) to J500 (Extension Header 1 (EXT1)) on the PIC32CK GC01 Curiosity Ultra Development Board.

## Programming hex file

The pre-built hex file can be programmed by following the below steps:

Steps to program the hex file

- Open MPLAB X IDE.
- Close all existing projects in IDE, if any project is opened.
- Go to File -> Import -> Hex/ELF File.
- In the Import Image File window,
  1. Create Prebuilt Project,
     - Click the Browse button to select the prebuilt hex file.
     - Select Device as PIC32CK2051GC01144.
     - Ensure the proper tool is selected under Hardware Tool and click Next button.
  2. Select Project Name and Folder,
     - Select appropriate project name and folder and click Finish button.
- In MPLAB X IDE, click on Make and Program Device button to program the device.
- Follow the steps in Running the Demo section below.

## Programming/Debugging Application Project

- Open the project (pic32ck_gc01_cult_getting_started\firmware\getting_started_pic32ck_gc01_cult.X) in MPLAB X IDE.
- Ensure PIC32CK GC01 Curiosity Ultra is selected as hardware tool to program/debug the application.
- Build the code and program the device by clicking on the Make and Program Device button in MPLAB X IDE tool bar.
- Follow the steps in Running the Demo section.

Note: This application is programmed using the PKOB4 tool pack v1.14.1168. If the user sees issues with programming, install this tool pack version and use it accordingly.

## Running the Demo

- Open the Tera Term terminal application on the PC (from the Windows® Start menu by pressing the Start button).
- Set the baud rate to 115200.
- Reset or power cycle the device.
- An LED0 on the PIC32CK GC01 Curiosity Ultra Development Board toggles on every timeout basis and the default periodicity of the timeout is 500 milliseconds.
- And also, the LED toggling rate is displayed on the serial terminal.
- Press the switch SW0 on the PIC32CK GC01 Curiosity Ultra Development Board to change the periodicity of the timeout to one second.
- Every subsequent pressing of the switch SW0 on the PIC32CK GC01 Curiosity Ultra Development Board changes the periodicity of the timeout to 2 seconds, 4 seconds, 500 milliseconds, and back to 1 second in cyclic order.
- Testing Extended Functionality
  - Press the switch SW1 on the PIC32CK GC01 Curiosity Ultra Development Board to read and print the Temperature from the Temperature Sensor.
  - The temperature read is displayed on a serial console on a periodical basis.
  - Press the switch SW0 (toggles LED0) on the PIC32CK GC01 Curiosity Ultra Development Board to change the periodicity of the temperature values displayed on the serial console. The periodicity will be changed between 500 milliseconds, one second, two seconds, four seconds and back to 500 milliseconds every time the user presses the switch SW0 on the PIC32CK GC01 Curiosity Ultra Development Board.
  - Below diagram shows the sample output log displayed on command prompt.

## Comments

- Reference Training Module on PIC32CX SG61 (with Trustzone): Arm® TrustZone® Technology Getting Started Application on PIC32CK SG01 (Cortex®-M33) MCUs.
- This application demo builds and works out of box by following the instructions above in Running the Demo section. If the user need to enhance/customize this application demo, should use the MPLAB Harmony v3 Software framework. Refer links below to setup and build the applications using MPLAB Harmony.
  - How to Setup MPLAB Harmony v3 Software Development Framework (DS90003232).
  - How to Set up the Tools Required to Get Started with MPLAB® Harmony v3 and MCC.
  - Create a new MPLAB Harmony v3 project using MCC.
  - Update and Configure an Existing MHC-based MPLAB Harmony v3 Project to MCC-based Project.
  - How to Build an Application by Adding a New PLIB, Driver, or Middleware to an Existing MPLAB Harmony v3 Project (DS90003253).