PIC32MZ EF Curiosity

USB CDC Device demo that enumerates as two serial ports on USB host PC

Introduction

The USB CDC Device class enables users to enumerate a USB device as a serial

communication port on a USB host personal computer. This demonstration application

creates a USB CDC Device that enumerates as two serial ports on the USB Host PC. This

application demonstrates the ability of the MPLAB Harmony USB Stack to support multiple

instances of the same device class.

The PIC32MZ EF Curiosity Development Board contains PIC32MZ2048EFM100 MCU

with Hi-Speed USB module that enables you to implement USB functionality through the micro-B

USB port.

1. PIC32MZ2048EFM100 32-bit microcontroller (U9).

2. Two mikroBUS sockets to expand functionality using MikroElectronika Click

adapter boards (J5, J10).

3. X32 header for audio I/O using Microchip audio daughter boards (J14, J15).

4. MRF24WN0MA, 2.4 GHz IEEE 802.11n compliant wireless module (U10).

5. Header for flexible Ethernet PHY options using Microchip PHY daughter boards (J18).

6. GPIO expansion header (J17).

7. Debug USB connector for programming/debugging (J3).

8. Target USB connector for PIC32 USB connectivity (Device/Host mode) (J12).

9. Header for external 5V input (J7).

10. Jumper to select power source: Debug USB connector, target USB connector and external

+5V input (J8).

11. Jumper to drive VBUS in Host mode (J13).

12. Three user LEDs (LED1, LED2, and LED3).

13. RGB LED (LED4).

14. User button (S1).

15. Reset Button (MCLR).

16. ICSP header for external debugger, such as MPLAB® REAL ICE™ or MPLAB ICD 3 (J16).

17. Jumper to select on-board debugger or external debugger (J2).

18. 24 MHz crystal oscillator (X2).

Required Tools and Applications

Microchip Tools and Applications

You will need the following Microchip development tools to run USB CDC com port dual

demo

 PIC32MZ EF Curiosity Development Board (DM320104), available from Microchip

Direct

 Download and install latest version of MPLAB® X Integrated Development

Environment (IDE)

 Download and install the latest version of MPLAB® XC32 Compiler

 Optionally Download and install the latest version of MPLAB® Harmony Integrated

Software Framework.

Note:

Using MPLAB® Harmony Integrated Software Framework you will be able to extend the

functionality of this project by adding new modules, software frameworks and libraries to

your project.

Building the Application

 Download the cdc_com_port project to your local PC.

 To build this project, you must open (in MPLAB X, File->Open Project) the

cdc_com_port_dual.X project (from <path-of-project-in-your-

pc>cdc_com_port_dual/firmware) in MPLAB X IDE, as shown below.