This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

why this progam in RTOS not running?

This is my source code, very simple.

#include <rtx51.h>
#include <stdio.h>
#include <math.h>
#include <REGX51.H>

void  task1 (void) _task_ 1 _priority_ 1
{
 P2_1 = 0;
 os_wait(K_TMO, 100, 0);
}


void  task2 (void) _task_ 2
{
 P2_1 = 1;
 os_wait(K_TMO, 100, 0);
}


void start (void) _task_ 0
{   os_set_slice(10000);
        os_create_task (1);
        os_create_task (2);
        os_delete_task (os_running_task_id ());
        P1=0;
}

void  main (void)
{  P2_3=0;
  os_start_system (0);

}

But when i use proteus to simulator this program, I see that : P2_3 is low, that ok. But P1 is always high. I think that the program doesn't run the funtion :void start (void) _task_ 0 . But I don't know why. Can you help me. Thank you very much.

Parents

0 edPer Westermark over 17 years ago in reply to thuan thuan

What is the result of the following:

#include <rtx51.h>
#include <stdio.h>
#include <math.h>
#include <REGX51.H>

void  task1(void) _task_ 1 _priority_ 1 {
    while (1) {
        P2_1 = 0;
        os_wait(K_TMO,100,0);
    }
}

void  task2(void) _task_ 2 {
    while (1) {
        P2_1 = 1;
        os_wait(K_TMO,100,0);
    }
}

void start(void) _task_ 0 {
    os_set_slice(10000);
    os_create_task(1);
    os_create_task(2);
    P1 = 0;
    os_delete_task(os_running_task_id());
}

void  main(void) {
    P2_3 = 0;
    os_start_system(0);
}

Reply

0 edPer Westermark over 17 years ago in reply to thuan thuan

What is the result of the following:

#include <rtx51.h>
#include <stdio.h>
#include <math.h>
#include <REGX51.H>

void  task1(void) _task_ 1 _priority_ 1 {
    while (1) {
        P2_1 = 0;
        os_wait(K_TMO,100,0);
    }
}

void  task2(void) _task_ 2 {
    while (1) {
        P2_1 = 1;
        os_wait(K_TMO,100,0);
    }
}

void start(void) _task_ 0 {
    os_set_slice(10000);
    os_create_task(1);
    os_create_task(2);
    P1 = 0;
    os_delete_task(os_running_task_id());
}

void  main(void) {
    P2_3 = 0;
    os_start_system(0);
}

Children

No data