# Compiling Applications with nRF Connect Extension for VS Code

To make zephyr-based application development a breeze, the BLITZ board is also compatible with the newly released nRF Connect SDK extension for the VS Code. 

### **Adding an existing application to nRF Connect for VS Code**

Once you are all set with the [<mark style="color:red;">nRF Connect Visual Studio Code Extension Pack</mark>](https://marketplace.visualstudio.com/items?itemName=nordic-semiconductor.nrf-connect-extension-pack) installation, start the extension in the VS Code.

{% hint style="success" %}
Installing nRF Connect Visual Studio Code Extension Pack will also install all the required dependencies.
{% endhint %}

First, Open Existing Application:

<figure><img src="/files/jN3ErH5OdcD03TULipgU" alt=""><figcaption><p>Open Existing Application</p></figcaption></figure>

This will open the file browser on your machine. Navigate to the location where the `led_blink` sample application resides (`ncs/v2.6.0/conexio-firmware-sdk/samples/conexio_blitz/led_blink`) and click **open**.

<figure><img src="/files/KQYFjNX3XJ46x5nkWuAo" alt=""><figcaption><p>Browse the sampe application</p></figcaption></figure>

On the left pane, under **APPLICATIONS**, you should now see the ported application.

### **Compiling an application using nRF Connect Extension**

Prior to compiling our sample application, we need to first generate the device build configuration for our project, by clicking on **Add Build Configuration (1)** option as shown below.

This opens a new tab, asking the user to select the board for which the build configurations will be generated. In our case, we will&#x20;

* (2) check the **All boards**
* (3) then search for `conexio_blitz_cpuapp` .
* (4) click **Build Configuration** to start the Zephyr application build process.

![Add Build Configuration](/files/z8GAZ5SJjgBtcxST8T9g)

&#x20;Now, you should see the build process kicking in the background and generating the required files and binaries for the `led_blink` sample application.

![Application Build In Progress](/files/IcrNIGMHFBP9eeEyl2O5)

Once the project is compiled successfully, in the project navigation panel, you will see all the generated files.

![Application Compiled Successfully](/files/HPy37vogFZd1a4VrMchG)

Well done! You have successfully managed to compile the sample application within the nRF Connect extension.

### **Flashing an application**

To upload the Conexio Stratus Pro firmware, we now have to:

* Open the terminal within the nRF Connect extension and invoke the `newtmgr -c serial image upload build/zephyr/app_update.bin` as shown, making sure the device is in DFU mode.

![Uploading the Firmware to the Device](/files/3Vmd1byRLCwpTpoFMrTW)


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