Scheduling events for future execution. See Event Scheduling for documentation.
License#
Copyright 2018 Silicon Laboratories Inc. www.silabs.com
The licensor of this software is Silicon Laboratories Inc. Your use of this software is governed by the terms of Silicon Labs Master Software License Agreement (MSLA) available at www.silabs.com/about-us/legal/master-software-license-agreement. This software is distributed to you in Source Code format and is governed by the sections of the MSLA applicable to Source Code.
/***************************************************************************/
#ifndef SILABS_EVENT_H
#define SILABS_EVENT_H
#ifdef EZSP_HOST
// Hosts do not support processor idling
#define EMBER_NO_IDLE_SUPPORT
#endif
// Controlling events
// Possible event status values. Having zero as the 'inactive' value
// causes events to initially be inactive.
//
#define emberEventControlSetInactive(control) \
do { (control).status = EMBER_EVENT_INACTIVE; } while (0)
#define emberEventControlGetActive(control) \
((control).status != EMBER_EVENT_INACTIVE)
#define emberEventControlSetActive(control) \
do { emEventControlSetActive(&(control)); } while (0)
void emEventControlSetActive(EmberEventControl *event);
#define EMBER_MAX_EVENT_CONTROL_DELAY_MS (HALF_MAX_INT32U_VALUE - 1)
#define emberEventControlSetDelayMS(control, delay) \
do { emEventControlSetDelayMS(&(control), (delay)); } while (0)
void emEventControlSetDelayMS(EmberEventControl*event, uint32_t delay);
#define EMBER_MAX_EVENT_CONTROL_DELAY_QS (EMBER_MAX_EVENT_CONTROL_DELAY_MS >> 8)
#define emberEventControlSetDelayQS(control, delay) \
do { emEventControlSetDelayMS(&(control), (delay) << 8); } while (0)
#define EMBER_MAX_EVENT_CONTROL_DELAY_MINUTES (EMBER_MAX_EVENT_CONTROL_DELAY_MS >> 16)
#define emberEventControlSetDelayMinutes(control, delay) \
do { emEventControlSetDelayMS(&(control), (delay) << 16); } while (0)
#define emberEventControlGetRemainingMS(control) \
(emEventControlGetRemainingMS(&(control)))
uint32_t emEventControlGetRemainingMS(EmberEventControl *event);
// Running events
void emberRunEvents(EmberEventData *events);
void emberRunTask(EmberTaskId taskid);
uint32_t emberMsToNextEvent(EmberEventData *events, uint32_t maxMs);
uint32_t emberMsToNextEventExtended(EmberEventData *events, uint32_t maxMs, uint8_t* returnIndex);
uint32_t emberMsToNextStackEvent(void);
EmberTaskId emberTaskInit(EmberEventData *events);
bool emberMarkTaskIdle(EmberTaskId taskid);
#ifndef EMBER_NO_IDLE_SUPPORT
#define emberTaskEnableIdling(allow) \
do { emTaskEnableIdling((allow)); } while (0)
void emTaskEnableIdling(bool allow);
#define emberMarkTaskActive(taskid) \
do { emMarkTaskActive((taskid)); } while (0)
void emMarkTaskActive(EmberTaskId taskid);
#else
#define emberTaskEnableIdling(allow) do {} while (0)
#define emberMarkTaskActive(taskid) do {} while (0)
#endif // EMBER_NO_IDLE_SUPPORT
EmberEventControl* emGetCurrentlyRunningEventControl(void);
// @} END addtogroup
#endif // SILABS_EVENT_H
Macros#
Sets this EmberEventControl as inactive (no pending event).
Returns true if the event is active, false otherwise.
Sets this EmberEventControl to run at the next available opportunity.
The maximum delay that may be passed to emberEventControlSetDelayMS.
Sets this EmberEventControl to run "delay" milliseconds in the future. NOTE: To avoid rollover errors in event calculation, the delay must be less than EMBER_MAX_EVENT_CONTROL_DELAY_MS.
The maximum delay that may be passed to emberEventControlSetDelayQS.
Sets this EmberEventControl to run "delay" quarter seconds in the future. The 'quarter seconds' are actually 256 milliseconds long. NOTE: To avoid rollover errors in event calculation, the delay must be less than EMBER_MAX_EVENT_CONTROL_DELAY_QS.
The maximum delay that may be passed to emberEventControlSetDelayMinutes.
Sets this EmberEventControl to run "delay" minutes in the future. The 'minutes' are actually 65536 (0x10000) milliseconds long. NOTE: To avoid rollover errors in event calculation, the delay must be less than EMBER_MAX_EVENT_CONTROL_DELAY_MINUTES.
Returns The amount of milliseconds remaining before the event is scheduled to run. If the event is inactive, MAX_INT32U_VALUE is returned.
Call this to indicate that an application supports processor idling.
Indicates that a task has something to do, so the CPU should not be idled until emberMarkTaskIdle is next called on this task.
Functions#
Sets this EmberEventControl to run at the next available opportunity.
Sets this EmberEventControl to run "delay" milliseconds in the future. NOTE: To avoid rollover errors in event calculation, the delay must be less than EMBER_MAX_EVENT_CONTROL_DELAY_MS.
Returns The amount of milliseconds remaining before the event is scheduled to run. If the event is inactive, MAX_INT32U_VALUE is returned.
An application typically creates an array of events along with their handlers.
If an application has initialized a task via emberTaskInit, it should call emberRunTask() instead of emberRunEvents() to run the events associated with that task.
Returns the number of milliseconds before the next event is scheduled to expire, or maxMs if no event is scheduled to expire within that time. NOTE: If any events are modified within an interrupt, it must be called with interrupts disabled or from within an ATOMIC() block in order to guarantee the accuracy of this API.
This function does the same as emberMsToNextEvent() with the following addition. If the returnIndex is non-NULL, it will set the value pointed to by the pointer to be equal to the index of the event that is ready to fire next. If no events are active, then it returns 0xFF.
Returns the number of milliseconds before the next stack event is scheduled to expire.
Initializes a task to be used for managing events and processor idling state. Returns the EmberTaskId, which represents the newly created task.
Indicates that a task has nothing to do (unless any events are pending) and that it would be safe to idle the CPU if all other tasks also have nothing to do. This API should always be called with interrupts disabled. It will forcibly re-enable interrupts before returning. Returns true if the processor was idled, false if idling was not permitted because some other task has something to do.
Returns the event control pointer of the currently running event. NULL if no event is running.
Macro Definition Documentation#
emberEventControlSetInactive#
#define emberEventControlSetInactiveValue:
(control)
Sets this EmberEventControl as inactive (no pending event).
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emberEventControlGetActive#
#define emberEventControlGetActiveValue:
(control)
Returns true if the event is active, false otherwise.
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emberEventControlSetActive#
#define emberEventControlSetActiveValue:
(control)
Sets this EmberEventControl to run at the next available opportunity.
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EMBER_MAX_EVENT_CONTROL_DELAY_MS#
#define EMBER_MAX_EVENT_CONTROL_DELAY_MSValue:
(HALF_MAX_INT32U_VALUE - 1)
The maximum delay that may be passed to emberEventControlSetDelayMS.
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emberEventControlSetDelayMS#
#define emberEventControlSetDelayMSValue:
(control, delay)
Sets this EmberEventControl to run "delay" milliseconds in the future. NOTE: To avoid rollover errors in event calculation, the delay must be less than EMBER_MAX_EVENT_CONTROL_DELAY_MS.
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EMBER_MAX_EVENT_CONTROL_DELAY_QS#
#define EMBER_MAX_EVENT_CONTROL_DELAY_QSValue:
(EMBER_MAX_EVENT_CONTROL_DELAY_MS >> 8)
The maximum delay that may be passed to emberEventControlSetDelayQS.
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emberEventControlSetDelayQS#
#define emberEventControlSetDelayQSValue:
(control, delay)
Sets this EmberEventControl to run "delay" quarter seconds in the future. The 'quarter seconds' are actually 256 milliseconds long. NOTE: To avoid rollover errors in event calculation, the delay must be less than EMBER_MAX_EVENT_CONTROL_DELAY_QS.
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EMBER_MAX_EVENT_CONTROL_DELAY_MINUTES#
#define EMBER_MAX_EVENT_CONTROL_DELAY_MINUTESValue:
(EMBER_MAX_EVENT_CONTROL_DELAY_MS >> 16)
The maximum delay that may be passed to emberEventControlSetDelayMinutes.
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emberEventControlSetDelayMinutes#
#define emberEventControlSetDelayMinutesValue:
(control, delay)
Sets this EmberEventControl to run "delay" minutes in the future. The 'minutes' are actually 65536 (0x10000) milliseconds long. NOTE: To avoid rollover errors in event calculation, the delay must be less than EMBER_MAX_EVENT_CONTROL_DELAY_MINUTES.
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emberEventControlGetRemainingMS#
#define emberEventControlGetRemainingMSValue:
(control)
Returns The amount of milliseconds remaining before the event is scheduled to run. If the event is inactive, MAX_INT32U_VALUE is returned.
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emberTaskEnableIdling#
#define emberTaskEnableIdlingValue:
(allow)
Call this to indicate that an application supports processor idling.
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emberMarkTaskActive#
#define emberMarkTaskActiveValue:
(taskid)
Indicates that a task has something to do, so the CPU should not be idled until emberMarkTaskIdle is next called on this task.
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Function Documentation#
emEventControlSetActive#
void emEventControlSetActive (EmberEventControl * event)
Sets this EmberEventControl to run at the next available opportunity.
N/A | event |
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emEventControlSetDelayMS#
void emEventControlSetDelayMS (EmberEventControl * event, uint32_t delay)
Sets this EmberEventControl to run "delay" milliseconds in the future. NOTE: To avoid rollover errors in event calculation, the delay must be less than EMBER_MAX_EVENT_CONTROL_DELAY_MS.
N/A | event | |
N/A | delay |
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emEventControlGetRemainingMS#
uint32_t emEventControlGetRemainingMS (EmberEventControl * event)
Returns The amount of milliseconds remaining before the event is scheduled to run. If the event is inactive, MAX_INT32U_VALUE is returned.
N/A | event |
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emberRunEvents#
void emberRunEvents (EmberEventData * events)
An application typically creates an array of events along with their handlers.
N/A | events |
The main loop passes the array to emberRunEvents() in order to call the handlers of any events whose time has arrived.
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emberRunTask#
void emberRunTask (EmberTaskId taskid)
If an application has initialized a task via emberTaskInit, it should call emberRunTask() instead of emberRunEvents() to run the events associated with that task.
N/A | taskid |
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emberMsToNextEvent#
uint32_t emberMsToNextEvent (EmberEventData * events, uint32_t maxMs)
Returns the number of milliseconds before the next event is scheduled to expire, or maxMs if no event is scheduled to expire within that time. NOTE: If any events are modified within an interrupt, it must be called with interrupts disabled or from within an ATOMIC() block in order to guarantee the accuracy of this API.
N/A | events | |
N/A | maxMs |
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emberMsToNextEventExtended#
uint32_t emberMsToNextEventExtended (EmberEventData * events, uint32_t maxMs, uint8_t * returnIndex)
This function does the same as emberMsToNextEvent() with the following addition. If the returnIndex is non-NULL, it will set the value pointed to by the pointer to be equal to the index of the event that is ready to fire next. If no events are active, then it returns 0xFF.
N/A | events | |
N/A | maxMs | |
N/A | returnIndex |
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emberMsToNextStackEvent#
uint32_t emberMsToNextStackEvent (void )
Returns the number of milliseconds before the next stack event is scheduled to expire.
N/A |
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emberTaskInit#
EmberTaskId emberTaskInit (EmberEventData * events)
Initializes a task to be used for managing events and processor idling state. Returns the EmberTaskId, which represents the newly created task.
N/A | events |
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emberMarkTaskIdle#
bool emberMarkTaskIdle (EmberTaskId taskid)
Indicates that a task has nothing to do (unless any events are pending) and that it would be safe to idle the CPU if all other tasks also have nothing to do. This API should always be called with interrupts disabled. It will forcibly re-enable interrupts before returning. Returns true if the processor was idled, false if idling was not permitted because some other task has something to do.
N/A | taskid |
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emTaskEnableIdling#
void emTaskEnableIdling (bool allow)
N/A | allow |
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emMarkTaskActive#
void emMarkTaskActive (EmberTaskId taskid)
N/A | taskid |
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emGetCurrentlyRunningEventControl#
EmberEventControl* emGetCurrentlyRunningEventControl (void )
Returns the event control pointer of the currently running event. NULL if no event is running.
N/A |
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