2 Getting Started

Getting started resources for the AVR32SD32 Curiosity Nano board in the MPLAB Tools Ecosystem.

2.1 Note Regarding Software Development on the AVR32SD32

The AVR32SD32 microcontroller has, by design, special functional safety features that cannot be disabled. These features may generate interrupts or even reset the device, which may be undesirable during initial software development. It is therefore recommended to follow the steps given in the section Getting Started with Software Development in the Device Data Sheet to configure the Error Controller to handle all errors at a low severity level.

Also, setting the lock bits on the AVR32SD32 changes the behavior of the UPDI interface. To clear the lock bits, issue a chip erase and then toggle power by unplugging the Curiosity Nano. See the UPDI handshake procedure in "Special Considerations for Programming" in the Device Data Sheet for technical details.

2.2 Getting Started Now with AVR®

Are you new to using AVR microcontrollers (MCUs)? Our comprehensive MPLAB® development ecosystem supports Microchip MCUs, which makes it easy to get your prototype up and running and includes production-ready code generation tools. Try the interactive guide to find the necessary resources: Get Started Now with AVR MCUs.
  1. Examples: MPLAB Discover is a tool to help you find Microchip example projects. It offers several ways to filter projects to efficiently find a Microchip-tested example, as close as possible to your application requirements, to use as a starting point for your development.

  2. Configure: MCC Melody provides Libraries, Drivers, and Peripheral Libraries (PLIB) to develop embedded software for a range of supported Microchip MCUs configured using MPLAB® Code Configurator (MCC).

  3. Develop: MPLAB X IDE (Integrated Development Environment), which is available for Windows, Linux and macOS, also MPLAB® XC C Compilers and GCC Compiler for AVR®.
  4. Debug: With the MPLAB X IDE and/or the MPLAB Data Visualizer, the AVR32SD32 device on the AVR32SD32 Curiosity Nano board is programmed and debugged by the on-board debugger. Therefore, no external programmer or debugger tool is required.
  5. Boards: The AVR32SD32 Curiosity Nano board is a supported part of the Curiosity Nano Development Platform, which includes the Curiosity Nano Base for Click Boards™.
    Tip: Take a look at this free Microchip University course.
    The Curiosity Nano development platform is well-suited to rapid prototyping. This course will introduce you to the defining features of the Curiosity Nano platform and show you how it can assist with using a new microcontroller or developing a new prototype. This course includes an in-depth look at the on-board debugger, which is central to the platform, and how to use its various user interfaces to help you reach your goals quicker.

2.3 How the Curiosity Nano Fits Into the MPLAB Tools Ecosystem

2.3.1 MPLAB X IDE Support for Curiosity Nano

When the board connects to the computer for the first time, the operating system will install the driver software. The drivers for the board are included with MPLAB® X IDE. Once this is done, when connecting the Curiosity Nano to a host PC via USB, if MPLAB X IDE is open, a Kit Window is opened with several key links for that Curiosity Nano.

When creating a new project, the part number on the Curiosity Nano will be detected, as will the debug tool.

Tip:

As shown in the image below, additional information about your Curiosity Nano can be seen in the "Debug Tool" window once you click "Refresh Debug Tool Status".
Tip:
  • If closed, reopen the Kit Window in MPLAB® X IDE through the menu bar Window > Kit Window
  • The 'How do I?' search bar often gives excellent results if you're new to MPLAB X IDE
  • 'Debug main project" will start a debug session
Tip:

2.4 MPLAB Data Visualizer Support for Curiosity Nano

The Curiosity Nano, via a USB/serial bridge, facilitates a connection between a UART on the Target MCU and your computer's COM port. For example, you may use this to connect to the MPLAB Data Visualizer or other terminal programs.

Tip: References for the example Data Visualizer Plot- and Terminal-views above:
  1. Plot View - DebugIO: DebugIO Hello World (Microchip University).
  2. Plot View - Serial Port: MCC Melody Use Case Data Visualizer Run Time Use Case 1.
  3. Terminal - Serial Port: MCC Melody UART Driver: LED Control Commands.

2.5 Using Pin Headers

The edge connector footprint on the AVR32SD32 Curiosity Nano has a staggered design where each hole is shifted 8 mils (~0.2 mm) off-center. The hole shift allows using regular 100 mil pin headers without soldering on the board. The pin headers can be used in applications like pin sockets and prototyping boards without issues once they are firmly in place.

Figure 2-1. Attaching Pin Headers to the Curiosity Nano Board
Figure 2-2. Connecting to Curiosity Nano Base for Click boards™
Tip:
  • Start at one end of the pin header and gradually insert the header along the length of the board. Once all the pins are in place, use a flat surface to push them in
  • For applications permanently using pin headers, it is still recommended to solder them in place
  • Once the pin headers are in place, they are hard to remove by hand. Use a set of pliers and carefully remove the pin headers to avoid damage to the pin headers and PCB