Nico De Witte / simple_task_scheduler

Simple Task Scheduler. For the moment only implements continuous running tasks and periodic tasks.

Example

two blinking leds

#include "mbed.h"

#include "task_scheduler.h"

Serial pc(USBTX, USBRX);        // tx, r

class Foo {
  DigitalOut myled1;
  int counter;

  public:
    Foo(void) :myled1(LED1) { counter = 0; }

    void alive_task(void) {
      if (counter++ % 30000 == 0) {
        myled1 = !myled1;
      }
    }
};

class Bar {
  DigitalOut myled2;

  public:
    Bar(void) :myled2(LED2) {}

    void control_task(void) {
      myled2 = !myled2;
    }
};

int main() {

    Foo foo;
    Bar bar;

    SimpleTaskScheduler::TaskScheduler scheduler;
    scheduler.create_continuous_task(&foo, &Foo::alive_task);
    scheduler.create_periodic_task(&bar, &Bar::control_task, 1);

    while(1) {
      scheduler.update();
    }
}

task_scheduler.cpp

Committer:
dwini
Date:
2016-12-13
Revision:
3:bd96023168df
Parent:
0:ba0870ec8714

File content as of revision 3:bd96023168df:

#include "task_scheduler.h"

namespace SimpleTaskScheduler {

  TaskScheduler::TaskScheduler(void) { }

  TaskScheduler::~TaskScheduler(void) {
    for (unsigned int i = 0; i < tasks.size(); i++) {
      delete tasks[i];
    }
  }

  void TaskScheduler::update(void) {
    for (unsigned int i = 0; i < tasks.size(); i++) {
      tasks[i]->run();
    }
  }

  void TaskScheduler::stop_task(unsigned int id) {
    for (unsigned int i = 0; i < tasks.size(); i++) {
      if (tasks[i]->get_id() == id) {
        tasks[i]->stop();
      }
    }
  }

  void TaskScheduler::start_task(unsigned int id) {
    for (unsigned int i = 0; i < tasks.size(); i++) {
      if (tasks[i]->get_id() == id) {
        tasks[i]->start();
      }
    }
  }

  unsigned int TaskScheduler::add_task(Task * task) {
    tasks.push_back(task);
    return task->get_id();
  }
};