/*******************************************************************************
**
** Function GKI_isend_msg
**
** Description Called from interrupt context to send a buffer to a task
**
** Returns Nothing
**
*******************************************************************************/
void GKI_isend_msg (UINT8 task_id, UINT8 mbox, void *msg)
{
BUFFER_HDR_T *p_hdr;
tGKI_COM_CB *p_cb = &gki_cb.com;
/* If task non-existant or not started, drop buffer */
if ((task_id >= GKI_MAX_TASKS) || (mbox >= NUM_TASK_MBOX) || (p_cb->OSRdyTbl[task_id] == TASK_DEAD))
{
GKI_exception(GKI_ERROR_SEND_MSG_BAD_DEST, "Sending to unknown dest");
GKI_freebuf (msg);
return;
}
#if (GKI_ENABLE_BUF_CORRUPTION_CHECK == TRUE)
if (gki_chk_buf_damage(msg))
{
GKI_exception(GKI_ERROR_BUF_CORRUPTED, "Send - Buffer corrupted");
return;
}
#endif
#if (GKI_ENABLE_OWNER_CHECK == TRUE)
if (gki_chk_buf_owner(msg))
{
GKI_exception(GKI_ERROR_NOT_BUF_OWNER, "Send by non-owner");
return;
}
#endif
p_hdr = (BUFFER_HDR_T *) ((UINT8 *) msg - BUFFER_HDR_SIZE);
if (p_hdr->status != BUF_STATUS_UNLINKED)
{
GKI_exception(GKI_ERROR_SEND_MSG_BUF_LINKED, "Send - buffer linked");
return;
}
if (p_cb->OSTaskQFirst[task_id][mbox])
p_cb->OSTaskQLast[task_id][mbox]->p_next = p_hdr;
else
p_cb->OSTaskQFirst[task_id][mbox] = p_hdr;
p_cb->OSTaskQLast[task_id][mbox] = p_hdr;
p_hdr->p_next = NULL;
p_hdr->status = BUF_STATUS_QUEUED;
p_hdr->task_id = task_id;
GKI_isend_event(task_id, (UINT16)EVENT_MASK(mbox));
return;
}
/*******************************************************************************
**
** Function GKI_timer_update
**
** Description This function is called by an OS to drive the GKI's timers.
** It is typically called at every system tick to
** update the timers for all tasks, and check for timeouts.
**
** Note: It has been designed to also allow for variable tick updates
** so that systems with strict power savings requirements can
** have the update occur at variable intervals.
**
** Parameters: ticks_since_last_update - (input) This is the number of TICKS that have
** occurred since the last time GKI_timer_update was called.
**
** Returns void
**
*******************************************************************************/
void GKI_timer_update (INT32 ticks_since_last_update)
{
UINT8 task_id;
long next_expiration; /* Holds the next soonest expiration time after this update */
/* Increment the number of ticks used for time stamps */
gki_cb.com.OSTicks += ticks_since_last_update;
/* If any timers are running in any tasks, decrement the remaining time til
* the timer updates need to take place (next expiration occurs)
*/
gki_cb.com.OSTicksTilExp -= ticks_since_last_update;
/* Don't allow timer interrupt nesting */
if (gki_cb.com.timer_nesting)
return;
gki_cb.com.timer_nesting = 1;
#if (defined(GKI_DELAY_STOP_SYS_TICK) && (GKI_DELAY_STOP_SYS_TICK > 0))
/* if inactivity delay timer is set and expired */
if (gki_cb.com.OSTicksTilStop)
{
if( gki_cb.com.OSTicksTilStop <= (UINT32)ticks_since_last_update )
{
if(gki_cb.com.p_tick_cb)
{
gki_cb.com.system_tick_running = FALSE;
(gki_cb.com.p_tick_cb) (FALSE); /* stop system tick */
}
gki_cb.com.OSTicksTilStop = 0; /* clear inactivity delay timer */
gki_cb.com.timer_nesting = 0;
return;
}
else
gki_cb.com.OSTicksTilStop -= ticks_since_last_update;
}
#endif
/* No need to update the ticks if no timeout has occurred */
if (gki_cb.com.OSTicksTilExp > 0)
{
gki_cb.com.timer_nesting = 0;
return;
}
GKI_disable();
next_expiration = GKI_NO_NEW_TMRS_STARTED;
/* If here then gki_cb.com.OSTicksTilExp <= 0. If negative, then increase gki_cb.com.OSNumOrigTicks
to account for the difference so timer updates below are decremented by the full number
of ticks. gki_cb.com.OSNumOrigTicks is reset at the bottom of this function so changing this
value only affects the timer updates below
*/
gki_cb.com.OSNumOrigTicks -= gki_cb.com.OSTicksTilExp;
/* Check for OS Task Timers */
for (task_id = 0; task_id < GKI_MAX_TASKS; task_id++)
{
if (gki_cb.com.OSWaitTmr[task_id] > 0) /* If timer is running */
{
gki_cb.com.OSWaitTmr[task_id] -= gki_cb.com.OSNumOrigTicks;
if (gki_cb.com.OSWaitTmr[task_id] <= 0)
{
/* Timer Expired */
gki_cb.com.OSRdyTbl[task_id] = TASK_READY;
}
}
#if (GKI_NUM_TIMERS > 0)
/* If any timer is running, decrement */
if (gki_cb.com.OSTaskTmr0[task_id] > 0)
{
gki_cb.com.OSTaskTmr0[task_id] -= gki_cb.com.OSNumOrigTicks;
if (gki_cb.com.OSTaskTmr0[task_id] <= 0)
{
/* Set Timer 0 Expired event mask and reload timer */
#if (defined(GKI_TIMER_UPDATES_FROM_ISR) && GKI_TIMER_UPDATES_FROM_ISR == TRUE)
GKI_isend_event (task_id, TIMER_0_EVT_MASK);
#else
GKI_send_event (task_id, TIMER_0_EVT_MASK);
#endif
gki_cb.com.OSTaskTmr0[task_id] = gki_cb.com.OSTaskTmr0R[task_id];
}
}
/* Check to see if this timer is the next one to expire */
if (gki_cb.com.OSTaskTmr0[task_id] > 0 && gki_cb.com.OSTaskTmr0[task_id] < next_expiration)
next_expiration = gki_cb.com.OSTaskTmr0[task_id];
#endif
#if (GKI_NUM_TIMERS > 1)
/* If any timer is running, decrement */
if (gki_cb.com.OSTaskTmr1[task_id] > 0)
{
gki_cb.com.OSTaskTmr1[task_id] -= gki_cb.com.OSNumOrigTicks;
if (gki_cb.com.OSTaskTmr1[task_id] <= 0)
{
/* Set Timer 1 Expired event mask and reload timer */
#if (defined(GKI_TIMER_UPDATES_FROM_ISR) && GKI_TIMER_UPDATES_FROM_ISR == TRUE)
GKI_isend_event (task_id, TIMER_1_EVT_MASK);
#else
GKI_send_event (task_id, TIMER_1_EVT_MASK);
#endif
gki_cb.com.OSTaskTmr1[task_id] = gki_cb.com.OSTaskTmr1R[task_id];
}
}
/* Check to see if this timer is the next one to expire */
if (gki_cb.com.OSTaskTmr1[task_id] > 0 && gki_cb.com.OSTaskTmr1[task_id] < next_expiration)
next_expiration = gki_cb.com.OSTaskTmr1[task_id];
#endif
#if (GKI_NUM_TIMERS > 2)
/* If any timer is running, decrement */
if (gki_cb.com.OSTaskTmr2[task_id] > 0)
{
gki_cb.com.OSTaskTmr2[task_id] -= gki_cb.com.OSNumOrigTicks;
if (gki_cb.com.OSTaskTmr2[task_id] <= 0)
{
/* Set Timer 2 Expired event mask and reload timer */
#if (defined(GKI_TIMER_UPDATES_FROM_ISR) && GKI_TIMER_UPDATES_FROM_ISR == TRUE)
GKI_isend_event (task_id, TIMER_2_EVT_MASK);
#else
GKI_send_event (task_id, TIMER_2_EVT_MASK);
#endif
gki_cb.com.OSTaskTmr2[task_id] = gki_cb.com.OSTaskTmr2R[task_id];
}
}
/* Check to see if this timer is the next one to expire */
if (gki_cb.com.OSTaskTmr2[task_id] > 0 && gki_cb.com.OSTaskTmr2[task_id] < next_expiration)
next_expiration = gki_cb.com.OSTaskTmr2[task_id];
#endif
#if (GKI_NUM_TIMERS > 3)
/* If any timer is running, decrement */
if (gki_cb.com.OSTaskTmr3[task_id] > 0)
{
gki_cb.com.OSTaskTmr3[task_id] -= gki_cb.com.OSNumOrigTicks;
if (gki_cb.com.OSTaskTmr3[task_id] <= 0)
{
/* Set Timer 3 Expired event mask and reload timer */
#if (defined(GKI_TIMER_UPDATES_FROM_ISR) && GKI_TIMER_UPDATES_FROM_ISR == TRUE)
GKI_isend_event (task_id, TIMER_3_EVT_MASK);
#else
GKI_send_event (task_id, TIMER_3_EVT_MASK);
#endif
gki_cb.com.OSTaskTmr3[task_id] = gki_cb.com.OSTaskTmr3R[task_id];
}
}
/* Check to see if this timer is the next one to expire */
if (gki_cb.com.OSTaskTmr3[task_id] > 0 && gki_cb.com.OSTaskTmr3[task_id] < next_expiration)
next_expiration = gki_cb.com.OSTaskTmr3[task_id];
#endif
}
/* Set the next timer experation value if there is one to start */
if (next_expiration < GKI_NO_NEW_TMRS_STARTED)
{
gki_cb.com.OSTicksTilExp = gki_cb.com.OSNumOrigTicks = next_expiration;
}
else
{
gki_cb.com.OSTicksTilExp = gki_cb.com.OSNumOrigTicks = 0;
}
gki_cb.com.timer_nesting = 0;
GKI_enable();
return;
}
