Jump to main content

##

# 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 Name | Description
--- | ---
pic32mm_usb_curiosity.X | MPLABX project for PIC32MM USB Curiosity board
pic32mm_curiosity.X | MPLABX project for PIC32MM Curiosity board

## Setting up the hardware

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

Project Name | Description
--- | ---
pic32mm_usb_curiosity.X | PIC32MM USB Curiosity board
pic32mm_curiosity.X | PIC32MM Curiosity board

### Setting up PIC32MM USB Curiosity Board

- To run the demo, the following additional hardware are required:

  - USB UART click board
- Connect micro USB cable to the 'USB1' connector on the board to the computer.
- Install an USB UART click board on to the mikroBUS socket J4.
- Connect mini USB cable between PC and the USB UART click board.
  Note: Ensure that the series resistors on the mikroBUS headers are of value 0 Ohms.

### Setting up PIC32MM Curiosity Board

- To run the demo, the following additional hardware are required:
  - USB UART click board
- Connect micro USB cable to the 'USB1' connector on the board to the computer.
- Install an USB UART click board on to the mikroBUS socket J4.
- Connect mini USB cable between PC and the USB UART click board.
  Note: Ensure that the series resistors on the mikroBUS headers are of value 0 Ohms.

## 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 10 characters in terminal.
6. Entered 10 characters is echoed back and LED is toggled.

Following table provides the LED names:

Board | LED Name
--- | ---
PIC32MM USB Curiosity board | LED1
PIC32MM Curiosity board | LED1