"Howard Long" <howard@howardlongxxx.com> wrote in message

> Here's my example. In the DSP/BIOS config file I have two tasks calling 
> _tsk0 and _tsk1, both at priority 0,

... should read at priority 1. Priority 0 should be left to the DSP/BIOS 
idle task.

Cheers, Howard

"jayadevan" <jaggunitj@yahoo.co.uk> wrote in message 
news:78idnWKiWed2QxLZnZ2dnUVZ_sidnZ2d@giganews.com...
>
> hi to all
>
> I am doing a project in which i have to implement multitasking.
> what i have done was that  i created two tsk objects and each have
> seperate functions to run.
>
> i have implemented it gradually.
>
> firstly i have defined one functionn and made it to run using one tsk
> object.this was ok
>
> then i defined second function and made the second function to run by the
> second object.this time error was there.
>
> i am not able to resolve it.
>
> like this i have to implement some more tasks in the same program.but i am
> not able to move forward

I am going to guess what is going on here.

Firstly I will assume that both are in an endless loop. Assuming they are 
the same priority, you must run a TSK_yield(). They will not pre-empt.

Here's my example. In the DSP/BIOS config file I have two tasks calling 
_tsk0 and _tsk1, both at priority 0, and a log object LOG0. Try commenting 
out the TSK_yield from one of the tsk# functions. Also try changing the 
priorities to see what happens. As well as the Message log, take a look at 
the CPU Execution graph.

#include <log.h>
#include <tsk.h>

extern LOG_Obj LOG0;

void main()
{
}

void tsk0(int nId)
{
 while(1)
 {
  int i;

  for (i=0;i<5;i++)
  {
   LOG_printf(&LOG0,"tsk0, id=%d, iter=%d\n",nId,i);
  }
  TSK_yield();
 }
}

void tsk1(int nId)
{
 while(1)
 {
  int i;

  for (i=0;i<5;i++)
  {
   LOG_printf(&LOG0,"tsk1, id=%d, iter=%d\n",nId,i);
  }
  TSK_yield();
 }
}

You will see this in the LOG0 message log:

2695067   tsk1, iter=2
2695068   tsk1, iter=3
2695069   tsk1, iter=4
2695070   tsk0, iter=0
2695071   tsk0, iter=1
2695072   tsk0, iter=2
2695073   tsk0, iter=3
2695074   tsk0, iter=4
2695075   tsk1, iter=0
2695076   tsk1, iter=1
2695077   tsk1, iter=2
2695078   tsk1, iter=3
2695079   tsk1, iter=4
2695080   tsk0, iter=0
2695081   tsk0, iter=1
2695082   tsk0, iter=2
2695083   tsk0, iter=3
2695084   tsk0, iter=4

spru303b http://focus.ti.com/lit/ug/spru303b/spru303b.pdf section 4.4.6 also 
has a good example.

jayadevan wrote:
> hi to all
>
> I am doing a project in which i have to implement multitasking.
> what i have done was that  i created two tsk objects and each have
> seperate functions to run.
>
> i have implemented it gradually.
>
> firstly i have defined one functionn and made it to run using one tsk
> object.this was ok
>
> then i defined second function and made the second function to run by the
> second object.this time error was there.
>
> i am not able to resolve it.
>
> like this i have to implement some more tasks in the same program.but i am
> not able to move forward

We feel your pain, but we really can't help you unless you tell us the
nature of the error.

Cheers! --M

hi to all

I am doing a project in which i have to implement multitasking.
what i have done was that  i created two tsk objects and each have
seperate functions to run.

i have implemented it gradually.

firstly i have defined one functionn and made it to run using one tsk
object.this was ok

then i defined second function and made the second function to run by the
second object.this time error was there.

i am not able to resolve it.

like this i have to implement some more tasks in the same program.but i am
not able to move forward