Issue with _time_delay() with MQX on K22F

[jacquesdumarest]

I made a simple program using MQX for FRDM K22F board (Using Kinetis Design Studio), and wanted to have the RGB LED blinking. I wanted to use _time_delay() function to define the LED blinking frequence, but it failed. I found that once I use _time_delay() the code after this instruction is never executed.

Here is my simple program to test _time_delay:

#include <stdio.h>

#include <mqx.h>

#include <bsp.h>

/* Task IDs */

#define INIT_TASK 5

extern void init_task(uint32_t);

const TASK_TEMPLATE_STRUCT MQX_template_list[] =

{

/* Task Index, Function, Stack, Priority, Name, Attributes, Param, Time Slice */

       {INIT_TASK, init_task, 1500, 9, "init", MQX_AUTO_START_TASK, 0, 0},

       {0, 0, 0, 0, 0, 0, 0, 0}

};

/*TASK*-----------------------------------------------------

*

* Task Name : init_task

* Comments :

* This task init stuff and then prints "Hello World ".

*

*END*-----------------------------------------------------*/

void init_task (uint32_t initial_data)

{

       printf("Hello World\n");

       printf("before\n");

_time_delay(0);

       printf("after\n");

}

I get both “before” and “after” sent to the hyper terminal, but if I change the time_delay to a non zero value: _time_delay(1); “after” is never printed?

Any idea of what I am doing wrong?

Thanks for your support

[soledad · Accepted solution]

Hello,

Which MQX version are you using??

Regards

Sol

[jacquesdumarest]

Hello,

I am using MQX 4.1.0, KDS 2.0.0 and KDSK 1.1.0

Best Regards,

Jacques

[soledad]

Hello Jacques,

I tried with the below code using MQX for KDSK 1.1.0 and KDS 2.0. without issues, unfortunately I cannot reproduce this issue.

Could you please try using this code??

/*HEADER**********************************************************************

*

* Copyright 2008 Freescale Semiconductor, Inc.

* Copyright 1989-2008 ARC International

*

* This software is owned or controlled by Freescale Semiconductor.

* Use of this software is governed by the Freescale MQX RTOS License

* distributed with this Material.

* See the MQX_RTOS_LICENSE file distributed for more details.

*

* Brief License Summary:

* This software is provided in source form for you to use free of charge,

* but it is not open source software. You are allowed to use this software

* but you cannot redistribute it or derivative works of it in source form.

* The software may be used only in connection with a product containing

* a Freescale microprocessor, microcontroller, or digital signal processor.

* See license agreement file for full license terms including other

* restrictions.

*****************************************************************************

*

* Comments:

*

*  This file contains the source for the hello2 example program.

*

*

*END************************************************************************/

#include <stdio.h>

#include <mqx.h>

#include <bsp.h>

/* Task IDs */

#define HELLO_TASK  5

#define WORLD_TASK  6

extern void hello_task(uint32_t);

extern void world_task(uint32_t);

const TASK_TEMPLATE_STRUCT  MQX_template_list[] =

{

  /* Task Index,  Function,  Stack,  Priority, Name,    Attributes,          Param, Time Slice */

    { WORLD_TASK,  world_task, 700,  9,        "world",  MQX_AUTO_START_TASK, 0,    0 },

    { HELLO_TASK,  hello_task, 700,  8,        "hello",  0,                  0,    0 },

    { 0 }

};

/*TASK*-----------------------------------------------------

*

* Task Name    : world_task

* Comments    :

*    This task creates hello_task and then prints " World ".

*

*END*-----------------------------------------------------*/

void world_task

  (

      uint32_t initial_data

  )

{

  _task_id hello_task_id;

  hello_task_id = _task_create(0, HELLO_TASK, 0);

  if (hello_task_id == MQX_NULL_TASK_ID) {

      printf ("\n Could not create hello_task\n");

  } else {

      printf(" World \n");

  }

  _task_block();

}

/*TASK*-----------------------------------------------------

*

* Task Name    : hello_task

* Comments    :

*    This task prints " Hello".

*

*END*-----------------------------------------------------*/

void hello_task

  (

      uint32_t initial_data

  )

{

  printf("\n Hello\n");

  _time_delay(5000);

  printf("\n Hello\n");

  _time_delay(0);

  printf("\n Hello\n");

  _task_block();

}

/* EOF */

Have a great day,
Sol

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[jacquesdumarest]

Thanks, this is working.