pTask - pTask - Priority task manager

    1 /*
    2           file: ptask.h
    3    description: priority (out of order) task manager
    4    written by : Michael Bradley
    5 
    6    Changelog:
    7       12/31/09 This file created
    8 
    9    This will allow you to run several tasks out of order, with the important
   10    tasks running more often than the others.
   11 
   12    Give each task a number from 1 to 255, the lower the number,
   13    the higher the priority the task has. (more often it runs)
   14 
   15    Basicaly, each task gets run the N'th time the task manager is entered
   16 
   17    example:
   18 
   19    // global define
   20    mpDefineTask mainTasks;
   21 
   22    void main(void)
   23    {
   24 
   25      mpTaskManager(mainTasks)
   26        {
   27        mpTask(mainTasks,  1, task_procGPS() );             // this task runs every time
   28        mpTask(mainTasks,  2, task_procMode() );            // this task runs every other time
   29        mpTask(mainTasks,  5, task_procTarget() );          // this task runs every 5th time
   30        mpTask(mainTasks, 12, task_termUpdate() );          // this task runs every 12th time
   31        }
   32 
   33    }
   34 
   35 */
   36 
   37 
   38 
   39 #ifndef __PTASK_MANAGER
   40    #define __PTASK_MANAGER
   41 
   42 
   43 #define mpDefineTask             unsigned int8
   44 #define mpTaskManager(wtask)     wtask++;
   45 #define mpTask(wtask,pri,fn)     if ( (wtask - ( (wtask/pri) * pri)) == 0 ) { fn; }
   46 
   47 #endif
   48 
   49