os_tmr.c

#include <stdio.h>
#include "includes.h"

/* Definition of Task Stacks */
#define   TASK_STACKSIZE       2048
OS_STK    task1_stk[TASK_STACKSIZE];

/* Definition of Task Priorities */

#define TASK1_PRIORITY      2

INT8U timer = 1;
INT8U error = 0;
  
INT8U arg = 0;
OS_TMR* os_timer;
  
 void tmr(void *ptmr, void *parg)
{
    printf("Tick\n");
    
}
  
/* Prints "Hello World" and sleeps for three seconds */
void task1(void* pdata)
{
    INT32U period = 1; // use OS_TMR_CFG_TICKS_PER_SEC to get 1 call a second
    os_timer = OSTmrCreate(0,                     // no delay
                           period,                // timer is called OS_TMR_CFG_TICKS_PER_SEC/period times a second on hardware
                           OS_TMR_OPT_PERIODIC,   // not a one-off
                           tmr,                   // callback routine
                           (void*)(&arg),         // no argument
                           &timer,                // timer no.
                           &error);               // error
  
  OSTmrStart(os_timer, &error);
  
  while (1)
  { 
    printf("Hello from task1\n");
    OSTimeDlyHMSM(0, 0, 3, 0);
    
  }
}

/* The main function creates two task and starts multi-tasking */
int main(void)
{
  OSTaskCreateExt(task1,
                  NULL,
                  (void *)&task1_stk[TASK_STACKSIZE-1],
                  TASK1_PRIORITY,
                  TASK1_PRIORITY,
                  task1_stk,
                  TASK_STACKSIZE,
                  NULL,
                  0);
  OSStart();
  return 0;
}