esp_event_isr_post() function

Special variant of esp_event_post for posting events from interrupt handlers.

Syntax

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Summary

Declaration

Definition

from esp_event.h:421

esp_err_t esp_event_isr_post(esp_event_base_t event_base, int32_t event_id, const void *event_data, size_t event_data_size, BaseType_t *task_unblocked);

Implemented in default_event_loop.c:80

Arguments

Argument

Description

event_base

the event base that identifies the event

event_id

the event ID that identifies the event

event_data

the data, specific to the event occurrence, that gets passed to the handler

event_data_size

the size of the event data; max is 4 bytes

task_unblocked

an optional parameter (can be NULL) which indicates that an event task with higher priority than currently running task has been unblocked by the posted event; a context switch should be requested before the interrupt is existed.

Return value

- ESP_OK: Success - ESP_FAIL: Event queue for the default event loop full - ESP_ERR_INVALID_ARG: Invalid combination of event base and event ID, data size of more than 4 bytes - Others: Fail

Notes

this function is only available when CONFIG_ESP_EVENT_POST_FROM_ISR is enabled when this function is called from an interrupt handler placed in IRAM, this function should be placed in IRAM as well by enabling CONFIG_ESP_EVENT_POST_FROM_IRAM_ISR

Examples

References

from examples

esp_event_isr_post() function

Syntax

Arguments

Return value

Notes

Examples

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