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esp32/task_wdt: Add esp_task_wdt_isr_user_handler function

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Added esp_task_wdt_isr_user_handler function to receive twdt events in
the user code.

Closes https://github.com/espressif/esp-idf/issues/2270
This commit is contained in:
Konstantin Kondrashov 2018-09-03 13:33:12 +08:00
parent 5f1844a0c8
commit 4fc84306a2
2 changed files with 15 additions and 1 deletions
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12
components/esp32/task_wdt.c
View File

@ -116,6 +116,17 @@ static void reset_hw_timer()
}
}
/*
* This function is called by task_wdt_isr function (ISR for when TWDT times out).
* It can be redefined in user code to handle twdt events.
* Note: It has the same limitations as the interrupt function.
* Do not use ESP_LOGI functions inside.
*/
void __attribute__((weak)) esp_task_wdt_isr_user_handler(void)
{
}
/*
* ISR for when TWDT times out. Checks for which tasks have not reset. Also
* triggers panic if configured to do so
@ -153,6 +164,7 @@ static void task_wdt_isr(void *arg)
ets_printf("CPU %d: %s\n", x, pcTaskGetTaskName(xTaskGetCurrentTaskHandleForCPU(x)));
}
esp_task_wdt_isr_user_handler();
if (twdt_config->panic){ //Trigger Panic if configured to do so
ets_printf("Aborting.\n");
portEXIT_CRITICAL(&twdt_spinlock);

4
docs/en/api-reference/system/wdts.rst
View File

@ -44,7 +44,9 @@ elect to be watched by the TWDT. Each watched task must 'reset' the TWDT
periodically to indicate that they have been allocated CPU time. If a task does
not reset within the TWDT timeout period, a warning will be printed with
information about which tasks failed to reset the TWDT in time and which
tasks are currently running on the ESP32 CPUs and.
tasks are currently running on the ESP32 CPUs.
And also there is a possibility to redefine the function `esp_task_wdt_isr_user_handler`
in the user code to receive this event.
The TWDT is built around the Hardware Watchdog Timer in Timer Group 0. The TWDT
can be initialized by calling :cpp:func:`esp_task_wdt_init` which will configure