Raspberry Pi无法两次连接到Pololu电动机驱动器

Question

我正在使用他们的website中的Pololu软件，以便将Raspberry Pi 0W连接到RoboClaw电机驱动器。使用简单的PWM代码，我可以一次连接到电动机驱动器，但是一旦结束代码，便无法再次运行它。我收到此错误：minikube stop rm -rf ~/.minikube minikube start 我试图找出如何在每次运行代码之间无需重新启动Raspberry Pi。

这是我的代码：

    class MySql
{
    private MySqlConnection connection;
    private string server;
    private string database;
    private string uid;
    private string password;

    //Constructor
    public MySql()
    {
        Initialize();
    }

    //Initialize values
    private void Initialize()
    {
        server = "mydomain.com";
        database = "dbName";
        uid = "Username";
        password = "Password";
        string connectionString;
        connectionString = "SERVER=" + server + ";" + "DATABASE=" +
        database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";";

        connection = new MySqlConnection(connectionString);
    }

    //open connection to database
    private bool OpenConnection()
    {
        try
        {
            connection.Open();
            return true;
        }
        catch (MySqlException ex)
        {
            //When handling errors, you can your application's response based 
            //on the error number.
            //The two most common error numbers when connecting are as follows:
            //0: Cannot connect to server.
            //1045: Invalid user name and/or password.
            switch (ex.Number)
            {
                case 0:
                    MessageBox.Show("Cannot connect to server.  Contact administrator");
                    break;

                case 1045:
                    MessageBox.Show("Invalid username/password, please try again");
                    break;
            }
            return false;
        }
    }

    //Close connection
    private bool CloseConnection()
    {
        try
        {
            connection.Close();
            return true;
        }
        catch (MySqlException ex)
        {
            MessageBox.Show(ex.Message);
            return false;
        }
    }