status_t devices_init(void)
{
bsp_task_init();
gpio_init();
key_init();
return OK;
}
/*-----------------------------------------------------------------------*/
task_t task_create(char *name, void (*task_func)(void *), void *parm, char *stack_base,
size_t stack_size, uint8_t pri, uint32_t slice, uint32_t flags)
{
uint32_t f;
int i;
struct dtask *task = NULL;
if(pri >= MAX_PRIORITY_LEVEL)
pri = pri/(256/MAX_PRIORITY_LEVEL);
if(name == NULL || task_func == NULL)
return RERROR;
if(stack_size <= 100)
return RERROR;
/* find an unused task control block */
SYS_FSAVE(f);
for(i=1; i<MAX_TASK_NUMBER; i++)
{
if(systask[i].state == TASK_STATE_DEAD)
{
task = &systask[i];
memset(task, 0, sizeof(struct dtask));
task->state = TASK_STATE_SUSPEND;
break;
}
}
SYS_FRESTORE(f);
if(task == NULL)
return RERROR;
if(stack_base == NULL)
stack_base = malloc(stack_size);
else
flags |= TASK_FLAGS_STATICSTACK;
if(stack_base)
{
memset(stack_base, TASK_STACK_INIT_CHAR, stack_size);
task->sp = bsp_task_init(i, task_func, parm, (char *)(stack_base+stack_size-4), task_exit);
strncpy((char *)systask[i].name, name, TASK_NAME_MAX_LENGTH-1);
task->flags = flags;
task->priority = pri;
task->pri_origin = pri;
task->timeslice_all = slice;
task->timeslice_left = slice;
task->stack_base = stack_base;
task->stack_size = stack_size;
task->taskq = NULL;
task->errcode = 0;
task->t_delay.onexpired_func = task_timeout;
task->t_delay.param[0] = i;
#ifdef INCLUDE_JOURNAL
journal_task_create(task);
#endif
#ifdef INCLUDE_PMCOUNTER
PMC_PEG_COUNTER(PMC_sys32_counter[PMC_U32_nTask],1);
#endif
return i;
}
else
{
SYS_FSAVE(f);
task->state = TASK_STATE_DEAD;
SYS_FRESTORE(f);
return RERROR;
}
}