SN512 Real-Time Operating Systems for Embedded Systems

Nico — Mon, 08 Jun 2026 11:52:36 GMT

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	Congratulation, you just successfully set up, build and run your first Zephyr application!		Congratulation, you just successfully set up, build and run your first Zephyr application!

			==Simple GPIO Control==

			This exercise is based on the <syntaxhighlight lang="text" inline>blinky</syntaxhighlight> example located in the <syntaxhighlight lang="text" inline>samples</syntaxhighlight> directory.

			* Copy the <syntaxhighlight lang="text" inline>blinky</syntaxhighlight> into your workspace.

			* Open the <syntaxhighlight lang="text" inline>src/main.c</syntaxhighlight> file an analyze its content.

			* Build the application and flash the program in the board memory. Validate that <syntaxhighlight lang="text" inline>LD2</syntaxhighlight> is blinking.

			* Modify <syntaxhighlight lang="text" inline>src/main.c</syntaxhighlight> to read the value of the user button <syntaxhighlight lang="text" inline>B1</syntaxhighlight> and update <syntaxhighlight lang="text" inline>LD2</syntaxhighlight> according to the state of the button.

			==Custom GPIO Control==

			The objective of this exercise is to control <syntaxhighlight lang="text" inline>D5</syntaxhighlight>, <syntaxhighlight lang="text" inline>D6</syntaxhighlight> and <syntaxhighlight lang="text" inline>D7</syntaxhighlight> pins as outputs which toogle at 1 Hz, 2 Hz and 4 Hz respectively.

			* Create a new application in your workspace

			* Create an custom overlay file to configure <syntaxhighlight lang="text" inline>D5</syntaxhighlight>, <syntaxhighlight lang="text" inline>D6</syntaxhighlight> and <syntaxhighlight lang="text" inline>D7</syntaxhighlight> pins as outputs.

			* Create/modify your <syntaxhighlight lang="text" inline>src/main.c</syntaxhighlight> file to toogle each pin at the correct frequency. Validate the application.

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SN512 Real-Time Operating Systems for Embedded Systems