To update the embedded program you drag and drop the HEX file from your Arduino project folder onto the Virtual Arduino. The virtual ATmega328p stores the last programmed firmware in the HEX property as part of the project and so in this way acts like the real ATmega328p. When a real Arduino is programmed it stores the binary program to Flash. The Virtual ATmega328p needs to have a program to run. To create a Test Circuit for the Blink HEX : By default it is configured to execute HEX files so it's easy to create a project from scratch to run simulations of your Arduino code. The ATMega328p co-processor is the same microcontroller as used by the standard Arduino UNO. To run the HEX in simulation only mode you need to use the ATmega328p component with the Arduino UNO footprint i Create Test Circuit Once compiled the HEX file should now appear in the Sketch folder. Select the Menu Sketch⇒ Export compiled Binary.With the correct board selected it is easy to generate the HEX file from the Arduino IDE. Select the Menu Tools ⇒ Board ⇒ Arduino/Genuino Uno.You should choose the Arduino/Genuino Uno board VBB only virtualises the ATMega328p microcontroller so you need to make sure the correct board is setup in the Arduino IDE to generate the correct HEX. In VBB though we pass the HEX directly to the virtual microcontroller as a File and then VBB decodes the file and executes the binary so we need access the HEX file itself. With a real arduino the HEX is transparently sent over a serial port to the microcontroller to self program so normally you don't see the HEX file. The HEX file itself is just a hexadecimal encoded version of the raw binary instruction set program that the microcontroller will actually run. If you are very new to Arduino you might not be familiar with the idea that the output of the Arduino IDE is a HEX file. The Arduino IDE is a simplified build system for the gcc compiler. You should see the Blink Sketch inside the Blink folder shown by a Windows Explorer folder Select the Menu Sketch⇒ Show Sketch Folder.We will be dragging and dropping the HEX file output from this folder so you need to open it so we can access the files using explorer Use the file save dialog to save the Sketch to your prefered locationĪll the files for a Sketch are included in a Sketch folder.The Arduino IDE examples don't allow you to make changes to the Sketch or generate HEX files into the examples Sketch folders so you will need to save the Blink Sketch into your personal Sketch folder or other location. Select the Menu File⇒ Examples⇒ 01.Basics⇒ Blink.You can skip this section if you already have a Sketch you are trying to simulate. In this codeLab we will use the Blink Sketch example that is shipped with the Arduino IDE.
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