1.21 RSTC Interrupt

This example shows how to use the RSTC peripheral to generate an interrupt instead of generating a reset, when the Reset switch is pressed on board.

Description

The RSTC peripheral samples the Reset input (NRST pin) at slow clock speed. When the line is detected low, it resets the processor and the peripherals. However, the RSTC peripheral can be programmed to not trigger a reset when an assertion of NRST occurs. The Reset pin state can be read at any time in software or it can also be programmed to generate an interrupt instead of generating a reset.

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/rstc/led_switcher/firmware.

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

Project NameDescription
sam_e70_xult.XMPLABX project for SAM E70 Xplained Ultra Evaluation Kit
sam_v71_xult.XMPLABX project for SAM V71 Xplained Ultra Evaluation Kit

Setting Up the Hardware

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

Project NameDescription
sam_e70_xult.XSAM E70 Xplained Ultra Evaluation Kit
sam_v71_xult.XSAM V71 Xplained Ultra Evaluation Kit

Setting Up SAM E70 Xplained Ultra Evaluation Kit

  • Connect the Debug USB port on the board to the computer using a micro USB cable

Setting Up SAM V71 Xplained Ultra Evaluation Kit

  • Connect the Debug USB port on the board to the computer using a micro USB cable