DUE - API

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The DUE API is designed to give full access of the ScriptEngine in a simple user-friendly way.

Tip

We will assume GpioExtension sample from Extensions is being used.

Run

This method will execute a script.

var script = new ScriptEngine(typeof(GpioExtension));

script.Run(@"
	var led = DigitalPin(4*16+11)//PE11
	func OnOff()
		writePin(led, On)
		Delay(100)
		writePin(led, Off)
		Delay(100)
	end
");

Run only returns when it has completed running the script. If the script has an infinite loop then Run will never return. A good option would be to spin a thread for Run. The rest of the system will continue to run normally and the thread can be terminated to abort Run when desired.

SetConsole

Redirects the Console Statements. For example, the output can be forwarded to a display.

class MyConsole : IConsole {
    private int row = 0;
    private const int charHeight = 9;

    // I2C Display
    static I2cController i2c = I2cController.FromName(SC13048.I2cBus.I2c1);
    static SSD1306Controller ssd1306 = new SSD1306Controller(i2c.GetDevice(new I2cConnectionSettings(0x3d)));

    // Basic Graphics
    static BasicGraphics basicGfx = new BasicGraphics(128, 64, ColorFormat.OneBpp);
    public void Cls() { 
        basicGfx.Clear();
        this.row = 0;
    }
    public void Locate(int row, int col) { }// deprecated!
    public void Print(string s) {
        if (row >= (basicGfx.Height / charHeight)) {
            Cls();
            row = 0;
        }
        basicGfx.DrawString(s, BasicGraphics.ColorFromRgb(0xff, 0xff, 0xff), 0, row * charHeight);
        ssd1306.DrawBufferNative(basicGfx.Buffer);
        row++;
    }
}

The IConsole interface is then passed to the engine.

var script = new ScriptEngine();
var console = new MyConsole();
script.SetConsole(console);
script.Run(@"
    cls
    print('Hello World!')   
    cls // will clear the previous prints
    print('Hello World!')   
    print   
    print 'TinyCLR'
    print ""with DUE""   
    print 'is the best!'
");