1.24 UART Echo Interrupt

This example application demonstrates how to use the UART peripheral to transfer a block of data in a non-blocking manner.

Description

This example shows the read and write operation over a UART in a non-blocking manner. The peripheral interrupt is used to manage the transfer. It receives 10 characters from the terminal window and echoes them back.

Downloading and Building the Application

To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.

Path of the application within the repository is apps/uart/uart_echo_interrupt/firmware.

To build the application, refer to the following table and open the project using its IDE.

Project NameDescription
pic32mz_w1_curiosity.XMPLABX project for PIC32MZ W1 Curiosity Board

Setting Up the Hardware

The following table shows the target hardware for the application projects.

Project NameDescription
pic32mz_w1_curiosity.XPIC32MZ W1 Curiosity Board

Setting Up PIC32MZ W1 Curiosity Board

  • Connect the Debug USB port on the board to the computer using a micro USB cable
  • On the GPIO Header (J207), connect U1RX (PIN 13) and U1TX (PIN 23) to TX and RX pin of any USB to UART converter (for example: USB UART click board)

Running the Application

  1. Open the Terminal application (Ex.:Tera term) on the computer
  2. Connect to the “USB to UART” COM port and configure the serial settings as follows:
    • Baud : 115200
    • Data : 8 Bits
    • Parity : None
    • Stop : 1 Bit
    • Flow Control : None
  3. Build and Program the application project using its IDE
  4. See the following message in the console:
  5. Type a line of characters and press the Enter key
  6. Entered line will be echoed back and the LED is toggled
Following table provides the LED name:
BoardLED Name
PIC32MZ W1 Curiosity BoardRED LED (D202)