BRISC Thread API

---

Thread Control Group.

b_thread_create()

b_thread_start()

b_thread_stop()

b_thread_lock()

b_thread_unlock()

b_thread_yield()

Thread State Group

b_thread_current()

b_thread_systick()

Example Usage:

#define STACK_BYTES     (1024)
#define STACK_WORDS     STACK_BYTES / sizeof(cpu_reg_t)

static cpu_reg_t red_stack   [ STACK_WORDS ];
static cpu_reg_t green_stack [ STACK_WORDS ];
static cpu_reg_t blue_stack  [ STACK_WORDS ];

static int red_thread_handle   = (-1);
static int green_thread_handle = (-1);
static int blue_thread_handle  = (-1);
static int main_thread_handle  = (-1);

....
....

int main( void )
{
    ....
    ....

    if ( (main_thread_handle  = b_thread_init( "main" )) >= 0 )
    {
        if ( (red_thread_handle = b_thread_create( "red", run_red, &delay, red_stack, STACK_WORDS )) >= 0)
        {
            if ( (green_thread_handle = b_thread_create( "green", run_green, &delay, green_stack, STACK_WORDS )) >= 0)
            {
                if ( (blue_thread_handle = b_thread_create( "blue", run_blue, &delay, blue_stack, STACK_WORDS )) >= 0)
                {
                    b_thread_start( red_thread_handle );
                    b_thread_start( blue_thread_handle );
                    b_thread_start( green_thread_handle );
                    run_main( &delay );
                }
            }
        }
    } 

    ....
    ....

}