utask_example_2.c

This example shows how to delay task execution by using utask_sleep().

#include "utask.h"
#include "leds.h"
#include "timer.h"

void timer_isr ()           //called 1000 times a second
{
  utask_sleep_process();
}

void task_delayed_run(utask * t)
{
    turn_led_on(t->arg);        //turn led on
    utask_exit(t);      //end task
}

int main ()
{
    timer_init();
    utask_init();
    
    utask* new_task;
    
    new_task = utask_add (task_delayed_run);
    utask_sleep(new_task,5000);     //delay execution, it will run in 5 seconds
    new_task->arg = RLED;           //turn on red led
    
    new_task = utask_add (task_delayed_run);
    utask_sleep(new_task,10000);        //delay execution, it will run in 10 seconds
    new_task->arg = GLED;           //turn on green led
    
    new_task = utask_add (task_delayed_run);
    utask_sleep(new_task,15000);        //delay execution, it will run in 15 seconds
    new_task->arg = BLED;           //turn on blue led
    
    while (1)
    {
        utask_schedule();
    }
    return 0;
}