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apps/examples/timer: Restore the timer example, but adapt the interface to use the new signal logic from Sebastien, Lorquet. Totally untested and probably does not work!

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This commit is contained in:
Gregory Nutt 2016-11-17 15:18:52 -06:00
parent 19c1c9d78b
commit f92afbfbf3
1 changed files with 26 additions and 31 deletions
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57
arch/arm/src/tiva/tiva_timerlow32.c
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@ -70,7 +70,7 @@ struct tiva_lowerhalf_s
const struct timer_ops_s *ops; /* Lower half operations */
struct tiva_gptm32config_s config; /* Persistent timer configuration */
TIMER_HANDLE handle; /* Contained timer handle */
tccb_t handler; /* Current user interrupt handler */
tccb_t callback; /* Current user interrupt callback */
uint32_t clkin; /* Input clock frequency */
uint32_t timeout; /* The current timeout value (us) */
uint32_t clkticks; /* Actual clock ticks for current interval */
@ -99,8 +99,8 @@ static int tiva_getstatus(struct timer_lowerhalf_s *lower,
struct timer_status_s *status);
static int tiva_settimeout(struct timer_lowerhalf_s *lower,
uint32_t timeout);
static tccb_t tiva_sethandler(struct timer_lowerhalf_s *lower,
tccb_t handler);
static void tiva_setcallback(struct timer_lowerhalf_s *lower,
tccb_t callback, FAR void *arg);
static int tiva_ioctl(struct timer_lowerhalf_s *lower, int cmd,
unsigned long arg);
@ -111,12 +111,12 @@ static int tiva_ioctl(struct timer_lowerhalf_s *lower, int cmd,
static const struct timer_ops_s g_timer_ops =
{
.start = tiva_start,
.stop = tiva_stop,
.getstatus = tiva_getstatus,
.settimeout = tiva_settimeout,
.sethandler = tiva_sethandler,
.ioctl = tiva_ioctl,
.start = tiva_start,
.stop = tiva_stop,
.getstatus = tiva_getstatus,
.settimeout = tiva_settimeout,
.setcallback = tiva_setcallback,
.ioctl = tiva_ioctl,
};
/****************************************************************************
@ -242,11 +242,11 @@ static void tiva_timer_handler(TIMER_HANDLE handle, void *arg, uint32_t status)
{
uint32_t timeout;
/* Is there a registered handler? If the handler has been nullified,
/* Is there a registered callback? If the callback has been nullified,
* the timer will be stopped.
*/
if (priv->handler && priv->handler(&priv->timeout))
if (priv->callback && priv->callback(&priv->timeout, priv->arg))
{
/* Calculate new ticks / dither adjustment */
@ -269,7 +269,7 @@ static void tiva_timer_handler(TIMER_HANDLE handle, void *arg, uint32_t status)
}
else
{
/* No handler or the handler returned false.. stop the timer */
/* No callback or the callback returned false.. stop the timer */
tiva_timer32_stop(priv->handle);
tmrinfo("Stopped\n");
@ -384,7 +384,7 @@ static int tiva_getstatus(struct timer_lowerhalf_s *lower,
status->flags |= TCFLAGS_ACTIVE;
}
if (priv->handler)
if (priv->callback)
{
status->flags |= TCFLAGS_HANDLER;
}
@ -444,17 +444,17 @@ static int tiva_settimeout(struct timer_lowerhalf_s *lower, uint32_t timeout)
}
/****************************************************************************
* Name: tiva_sethandler
* Name: tiva_setcallback
*
* Description:
* Call this user provided timeout handler.
* Call this user provided timeout callback.
*
* Input Parameters:
* lower - A pointer the publicly visible representation of the "lower-half"
* driver state structure.
* newhandler - The new timer expiration function pointer. If this
* function pointer is NULL, then the reset-on-expiration
* behavior is restored,
* lower - A pointer the publicly visible representation of the "lower-half"
* driver state structure.
* callback - The new timer expiration function pointer. If this
* function pointer is NULL, then the reset-on-expiration
* behavior is restored,
*
* Returned Values:
* The previous timer expiration function pointer or NULL is there was
@ -462,28 +462,23 @@ static int tiva_settimeout(struct timer_lowerhalf_s *lower, uint32_t timeout)
*
****************************************************************************/
static tccb_t tiva_sethandler(struct timer_lowerhalf_s *lower,
tccb_t handler)
static void tiva_setcallback(struct timer_lowerhalf_s *lower,
tccb_t callback, FAR void *arg)
{
struct tiva_lowerhalf_s *priv = (struct tiva_lowerhalf_s *)lower;
irqstate_t flags;
tccb_t oldhandler;
flags = enter_critical_section();
DEBUGASSERT(priv);
tmrinfo("Entry: handler=%p\n", handler);
tmrinfo("Entry: callback=%p\n", callback);
/* Get the old handler return value */
/* Save the new callback */
oldhandler = priv->handler;
/* Save the new handler */
priv->handler = handler;
priv->callback = callback;
priv->arg = arg;
leave_critical_section(flags);
return oldhandler;
}
/****************************************************************************