Provides functionality to trigger periodic event callbacks. More...
Detailed Description
Provides functionality to trigger periodic event callbacks.
This provides convenience functions to trigger periodic event callbacks executed by the event thread.
Event Periodic Callback API
Definition in file periodic_callback.h.
Include dependency graph for periodic_callback.h:Go to the source code of this file.
Data Structures | |
| struct | event_periodic_callback_t |
| Periodic Callback Event structure. More... | |
| static void * | event_periodic_callback_get_arg (event_periodic_callback_t *event) |
| Get user context from Periodic Callback Event. | |
| static void | event_periodic_callback_init (event_periodic_callback_t *event, ztimer_clock_t *clock, event_queue_t *queue, void(*callback)(void *), void *arg) |
| Initialize a periodic callback event. | |
| static void | event_periodic_callback_start (event_periodic_callback_t *event, uint32_t interval) |
| Starts a periodic callback event. | |
| static void | event_periodic_callback_create (event_periodic_callback_t *event, ztimer_clock_t *clock, uint32_t interval, event_queue_t *queue, void(*callback)(void *), void *arg) |
| Initialize and start a periodic callback event. | |
| static uint32_t | event_periodic_callback_get_interval (const event_periodic_callback_t *event) |
| Get the interval in which the periodic callback event repeats. | |
| static void | event_periodic_callback_set_count (event_periodic_callback_t *event, uint32_t count) |
| Set the amount of times the periodic callback event should repeat itself. | |
| static uint32_t | event_periodic_callback_get_count (const event_periodic_callback_t *event) |
| Get the amount of times the periodic callback event should repeat itself. | |
| static void | event_periodic_callback_stop (event_periodic_callback_t *event) |
| Stop a periodic callback event. | |
Function Documentation
◆ event_periodic_callback_create()
|
inlinestatic |
Initialize and start a periodic callback event.
This is a convenience function that combines event_periodic_callback_init and event_periodic_callback_start
- Parameters
-
[out] event event_periodic_callback object to initialize [in] clock the clock to configure this timer on [in] interval period length for the event [in] queue queue that the timed-out event will be added to [in] callback callback to set up [in] arg callback argument to set up
Definition at line 115 of file periodic_callback.h.
◆ event_periodic_callback_get_arg()
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inlinestatic |
Get user context from Periodic Callback Event.
- Parameters
-
[in] event event_periodic_callback object to initialize
- Returns
- User supplied argument to the event
Definition at line 50 of file periodic_callback.h.
◆ event_periodic_callback_get_count()
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inlinestatic |
Get the amount of times the periodic callback event should repeat itself.
- Parameters
-
[in] event event_periodic_callback context object to use
- Returns
- times the event should repeat itself, EVENT_PERIODIC_FOREVER if it will repeat forever or is exhausted
Definition at line 156 of file periodic_callback.h.
◆ event_periodic_callback_get_interval()
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inlinestatic |
Get the interval in which the periodic callback event repeats.
- Parameters
-
[in] event event_periodic_callback context object to use
- Returns
- The interval of the underlying timer in which the event repeats
Definition at line 131 of file periodic_callback.h.
◆ event_periodic_callback_init()
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inlinestatic |
Initialize a periodic callback event.
- Note
- : On init the periodic event is configured to run forever.
- Parameters
-
[in] event event_periodic_callback object to initialize [in] clock the clock to configure this timer on [in] queue queue that the timed-out event will be added to [in] callback callback to set up [in] arg callback argument to set up
Definition at line 66 of file periodic_callback.h.
◆ event_periodic_callback_set_count()
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inlinestatic |
Set the amount of times the periodic callback event should repeat itself.
- Parameters
-
[in] event event_periodic_callback context object to use [in] count times the event should repeat itself, EVENT_PERIODIC_FOREVER to run for ever.
Definition at line 143 of file periodic_callback.h.
◆ event_periodic_callback_start()
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inlinestatic |
Starts a periodic callback event.
If the event is already started, it's interval will be updated and it will be scheduled with the new interval.
This will make the event as configured in event be triggered at every interval ticks (based on event->periodic.clock).
- Note
- : the used event_periodic struct must stay valid until after the timeout event has been processed!
- : this function does not touch the current count value.
- Parameters
-
[in] event event_periodic_callback context object to use [in] interval period length for the event
Definition at line 95 of file periodic_callback.h.
◆ event_periodic_callback_stop()
|
inlinestatic |
Stop a periodic callback event.
Calling this function will cancel the timeout by removing its underlying timer. If the timer has already fired before calling this function, the connected event will be put already into the given event queue and this function does not have any effect.
- Note
- Calling this function does not touch event_periodic->count, if the periodic event was not set to run for ever and did run until expiration, then count will be != 0 after this function is called.
- Parameters
-
[in] event event_periodic_callback context object to use
Definition at line 175 of file periodic_callback.h.
