title: Why Won't Arduino Intellisense Work in VSCode?
body: <p>I installed the Arduino extension <a href="https://marketplace.visualstudio.com/items?itemName=vsciot-vscode.vscode-arduino" rel="noreferrer">Arduino extension</a> in VSCode which is supposed to include intellisense however it doesn't seem to be working. This is my c_cpp_properties.json:</p>
  
  <p><a href="https://i.stack.imgur.com/S11xn.png" rel="noreferrer"><img src="https://i.stack.imgur.com/S11xn.png" alt="c_cpp_properties.json"></a></p>
  
  <p>And here is an example of the intellisense not working:</p>
  
  <p><a href="https://i.stack.imgur.com/XHYHa.png" rel="noreferrer"><img src="https://i.stack.imgur.com/XHYHa.png" alt="intellisense not working"></a></p>
  
  <p>As you can see, intellisense should be able to predict the keyword <code>Serial</code> however it does not.</p>
  
  <p>I have Command Line Tools installed. Is there a missing directory that I should include in the "includePath" property.</p>