vicero / netduino-scheduler

A simple single-threaded task scheduler for the Netduino

netduino-scheduler

A recurrence scheduler in C# for the Netduino.

Getting Started

You will need to install the Netduino SDK for .NET Micro 4.3 as described here. Then include the netduino-scheduler project in your solution. The example project is not required.

Tasks

Work done by the system is described by the abstract Task class. To schedule work, first create your own class that inherits from Task. The recurrence parameter on the base constructor tells the scheduler how often to perform the task.

internal sealed class ExampleTask : Task
{
	public ExampleTask() : base(recurrence: 1000) { }
}

The work to perform in the task should be implemented in the DoWork override. The task can perform thread waits if needed.

protected override void DoWork()
{
    //do something interesting
}

Tasks will automatically be requeued after completion.

Scheduler

To start running the tasks, create an instance of Scheduler specifying the list of tasks to queue and run.

Then call Run() and the scheduler will handle running all the tasks for you.

public static void Main()
{
    var tasks = new[] {
        new ExampleTask("A", recurrence: 1000, wait: 100),
        new ExampleTask("B", recurrence: 5000, wait: 100),
        new ExampleTask("C", recurrence: 10000, wait: 100),
    };

    var scheduler = new Scheduler(tasks);
    scheduler.Run();
}

example project debug output

00:09.469: A will now wait for 100ms
00:09.575: B will now wait for 100ms
00:09.677: C will now wait for 100ms
00:10.780: A will now wait for 100ms
00:11.883: A will now wait for 100ms
00:12.986: A will now wait for 100ms
00:14.089: A will now wait for 100ms
00:14.691: B will now wait for 100ms
00:15.294: A will now wait for 100ms
00:16.397: A will now wait for 100ms
00:17.499: A will now wait for 100ms
00:18.602: A will now wait for 100ms
00:19.705: A will now wait for 100ms
00:19.807: C will now wait for 100ms
00:19.910: B will now wait for 100ms
00:21.013: A will now wait for 100ms
00:22.116: A will now wait for 100ms
00:23.218: A will now wait for 100ms
00:24.321: A will now wait for 100ms
00:24.924: B will now wait for 100ms