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# 1.18 RTT Periodic Interrupt

This example shows how to use the RTT to generate periodic interrupts.

## Description

This example application shows how to configure the RTT Peripheral to generate periodic ticks. It toggles an LED every time the callback is triggered.

## 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/rtt/rtt_periodic_timeout/firmware.

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

Project Name | Description
--- | ---
sam_rh71_ek.X | MPLABX project for SAM RH71 Evaluation Kit

## Setting Up the Hardware

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

Project Name | Description
--- | ---
sam_rh71_ek.X | SAM RH71 Evaluation Kit

### Setting Up SAM RH71 Evaluation Kit

- Connect the debugger probe to J33

## Running the Application

1. Build and Program the application project using its respective IDE
2. The LED blinks continuously

The following table provides the LED name:

Board | LED Name
--- | ---
SAM RH71 Evaluation Kit | LED0