Upload Program to Arduino UNO
===================================

This section provides detailed instructions on how to upload the main program to the Arduino UNO Board.


Step 1: Install Arduino IDE
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Go to https://www.arduino.cc/en/Main/Software and you will see the following page.

The version available at this website is usually the latest version, and the actual version may be newer than the version in the picture. 

If you have already installed the Arduino IDE, you can skip this step and continue to the next step.

.. image:: ../_static/P1.png
   :alt: Arduino IDE Download Page
   :width: 600px
   :height: 400px 
   :align: center


Step 2: Install CH340 Driver
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* If your computer can detect the USB-SERIAL CH340 port, it means the CH340 driver is already installed on your system, and you can skip this step directly.

.. image:: ../_static/P5.png
   :alt: CH340 Driver Download Page
   :width: 80%
   :align: center

* If your computer does not automatically recognize the board(as shown in the picture), you may need to install the CH340 driver.

.. image:: ../_static/P2.png
   :alt: CH340 Driver Download Page
   :width: 80%
   :align: center

Follow the steps below to install the CH340 driver:

①: Downloading the driver


First, download the CH340 driver from the this link.
`Windows CH340 Driver <https://www.dropbox.com/scl/fi/m5ahy1flzm5znz2k2ikvl/CH341SER_Window.EXE?rlkey=vlzov8ojypglo46y3w6prcbyf&st=hltdfejq&dl=1>`_

You can also download the latest version of the driver directly from the `manufacturer’s site <https://www.chipchips.com/CH340.html>`_

.. image:: ../_static/P3.png
   :alt: CH340 Driver Download Page
   :width: 80%
   :align: center

②: Installing the driver


After downloading the driver, open it and click Install.

.. note::
   Tip: Before installing the driver software, you must connect the Arduino board to your computer with a USB cable.

.. image:: ../_static/P4.png
   :alt: CH340 Driver Installation Page   
   :width: 80%
   :align: center

After successful installation you should see this message

.. image:: ../_static/P6.png
   :alt: CH340 Driver Installation Page   
   :width: 80%
   :align: center

Note：In some cases, you may need to reset Windows after the driver installation is complete.

③: Checking Correct Driver Installation in Device Manager

If your driver has been installed correctly, and you connect your board to your computer, you will see its name and port number listed in the Ports section of Device Manager. For example, your Arduino board may show up as connected to **COM28**.

.. image:: ../_static/P5.png
   :alt: CH340 Driver Installation Page   
   :width: 80%
   :align: center


④: Verify Installation in the Arduino IDE
  
Open the Arduino IDE -> **Tools** -> **Port** -> **COM28**. This ensures the IDE communicates with your Arduino board correctly.

.. image:: ../_static/P7.png
   :alt: Arduino IDE Port Selection Page   
   :width: 80%
   :align: center 


If you can't find the CH340 device in Device Manager or Arduino IDE, the driver installation failed. Try uninstalling the driver, restarting your computer, and repeating the steps above.


.. image:: ../_static/P8.png
   :alt: Arduino IDE Port Selection Page   
   :width: 80%
   :align: center 


Step 3: Upload Arduino UNO Main Code
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① Load Main code into the Arduino IDE

* Launch the Arduino IDE and navigate to **File** -> **Open...** in the menu bar, then locate and select the main program **`SmartRobotCar_Main_V1.ino`** from your downloaded resource folder.


.. image:: ../_static/P9.png  
   :alt: Arduino IDE Port Selection Page   
   :width: 80%
   :align: center 

.. image:: ../_static/P10.png    
   :alt: Arduino IDE Port Selection Page   
   :width: 80%
   :align: center 

.. image:: ../_static/P11.png       
   :alt: Arduino IDE Port Selection Page   
   :width: 80%
   :align: center 

② Connect the Arduino UNO Board to Your Computer

* Connect the Arduino UNO Board on the Smart Robot Car to your computer using the provided USB Type B cable.
* Ensure the power switch on the Smart Robot Car is turned on.

.. image:: ../_static/P15.png       
   :alt: Arduino IDE Port Selection Page   
   :width: 50%
   :align: center 


③ Configure the Board and Port

* Go to **Tools** -> **Board** and select **Arduino Uno**.
* Go to **Tools** -> **Port** and select the COM port that corresponds to your connected Arduino board.

.. image:: ../_static/P12.png       
   :alt: Arduino IDE Port Selection Page   
   :width: 100%
   :align: center 

.. image:: ../_static/P13.png       
   :alt: Arduino IDE Port Selection Page   
   :width: 100%
   :align: center 

④ Upload the Code

* Click the **Upload** button (the right-pointing arrow icon) located in the top-left corner of the Arduino IDE.
* Wait for the IDE to compile and upload the sketch.
* You should see a "Done uploading" message at the bottom of the IDE window when it is successful.

.. image:: ../_static/P14.png       
   :alt: Arduino IDE Port Selection Page   
   :width: 100%
   :align: center