BIOS_exit() question

madoka

Hi all,

I am using Stellaris LM3S9B96, running TI RTOS, my IDE is CCS 5.5

I dont quite understand BIOS_exit(Int stat) function,

it explains This function is called when a SYS/BIOS executable needs to terminate normally. This function sets the internal SYS/BIOS threadType to ThreadType_Main and then calls System_exit(stat), passing along the 'stat' argument.

what is stat argument? what is difference if it execute BIOS_exit(0), or BIOS_exit(1).

I would like to call BIOS_exit inside a task. so after it executes BIOS_exit, where the program counter will go to, right after BIOS_start(); I called BIOS_start() inside main function.

I have some code right after BIOS_start(), how can I exit RTOS and execute the code right after BIOS_start() inside main function.

Thanks in advance

over 11 years ago

0 madoka over 11 years ago

Intellectual 775 points

I did some research on BIOS_exit. basically BIOS_exit() internally calls System_exit(). I can register functions that are called at exit-time via "System_atexit()".

how can I add a function to the atexit function list? is there any examples?

some hints very appreciated

0 madoka over 11 years ago

Intellectual 775 points

found a solution

void Func (Int val)
{
  // function execute
  // ...
}

and in the main function

Int main (void)
{
  // System init
  // ...

  System_atexit(Func);

  BIOS_start();

  return (0);
}

in the task function, I called BIOS_exit(). it will exit BIOS

void TaskFxn(UArg arg0, Uarg arg1)
{
   // Do some work
   // ...
     
   BIOS_exit(1);
}

I debug step by step . after it call BIOS_exit(1), the program counter goes to Func(Int val).

Correct me if I am wrong.

The question here is, after BIOS_exit executed, There is no any tasks running? correct?

0 Emmanuel Trinidad - Alicea over 11 years ago in reply to madoka

TI__Genius 10260 points

Hi Madoka,

Glad to see you have figured it out. Your assumption is correct, once BIOS_exit is executed, tasks no longer run. BIOS will internally call System_exit() which will run any System_atexit functions and finalize.

Thanks,

-- Emmanuel

0 madoka over 11 years ago in reply to Emmanuel Trinidad - Alicea

Intellectual 775 points

Thank you for replying

Can you help me with another post?

http://e2e.ti.com/support/embedded/tirtos/f/355/t/312387.aspx

It has been posted for a week.

your a little assistance may solve the problem

Please

Thank you very much

Processors

Processors forum

BIOS_exit() question