PIT Period Change

This example application shows how PIT period can be changed during run time.

Parent topic:Harmony 3 Peripheral Library Application Examples for SAMA5D2 Family

Description

The LED starts blinking at one second intervals. When the switch is pushed the period
is cut in half. As the switch is pushed the period is toggled from 1 second
interval, .5 second, .25 second intervals, and .125 second intervals. There is no
debounce in the switch so it is possible that pressing the switch will jump more
than one interval.

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/pit/period_change/firmware.

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

Setting Up AT91Bootstrap Loader

To load the application binary onto the target device, we need to use at91bootstrap
loader. Refer to the at91bootstrap loader documentation for
details on how to configure, build and run bootstrap loader project and use it to
bootstrap the application binaries.

Setting Up the Hardware

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

Setting Up SAMA5D29 Curiosity Development Board

SETTING UP THE BOARD

• Connect the Debug USB port on the board to the computer using a Type-C USB cable

Running the Application

1. Build the application using its IDE
2. LED toggles every 1 second
3. Press switch to change the rate of toggle

Following table provides details of Switch and LED names: