task_watchdog sample
Select one of the symbols to view example projects that use it.
 
Outline
#include "sdkconfig.h"
#include <stdio.h>
#include <stdlib.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_err.h"
#include "esp_task_wdt.h"
#define TWDT_TIMEOUT_MS
#define TASK_RESET_PERIOD_MS
#define MAIN_DELAY_MS
run_loop
func_a_twdt_user_hdl
func_b_twdt_user_hdl
func_a()
func_b()
task_func(void *)
app_main()
Files
loading (2/4)...
SourceVuESP-IDF Framework and Examplestask_watchdog samplemain/task_watchdog_example_main.c
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/* Task_Watchdog Example This example code is in the Public Domain (or CC0 licensed, at your option.) Unless required by applicable law or agreed to in writing, this software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *//* ... */ #include "sdkconfig.h" #include <stdio.h> #include <stdlib.h> #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "esp_err.h" #include "esp_task_wdt.h"7 includes #define TWDT_TIMEOUT_MS 3000 #define TASK_RESET_PERIOD_MS 2000 #define MAIN_DELAY_MS 10000 static volatile bool run_loop; static esp_task_wdt_user_handle_t func_a_twdt_user_hdl; static esp_task_wdt_user_handle_t func_b_twdt_user_hdl; static void func_a(void) { esp_task_wdt_reset_user(func_a_twdt_user_hdl); }{ ... } static void func_b(void) { esp_task_wdt_reset_user(func_b_twdt_user_hdl); }{ ... } void task_func(void *arg) { // Subscribe this task to TWDT, then check if it is subscribed ESP_ERROR_CHECK(esp_task_wdt_add(NULL)); ESP_ERROR_CHECK(esp_task_wdt_status(NULL)); // Subscribe func_a and func_b as users of the the TWDT ESP_ERROR_CHECK(esp_task_wdt_add_user("func_a", &func_a_twdt_user_hdl)); ESP_ERROR_CHECK(esp_task_wdt_add_user("func_b", &func_b_twdt_user_hdl)); printf("Subscribed to TWDT\n"); while (run_loop) { // Reset the task and each user periodically /* Note: Comment out any one of the calls below to trigger the TWDT *//* ... */ esp_task_wdt_reset(); func_a(); func_b(); vTaskDelay(pdMS_TO_TICKS(TASK_RESET_PERIOD_MS)); }{...} // Unsubscribe this task, func_a, and func_b ESP_ERROR_CHECK(esp_task_wdt_delete_user(func_a_twdt_user_hdl)); ESP_ERROR_CHECK(esp_task_wdt_delete_user(func_b_twdt_user_hdl)); ESP_ERROR_CHECK(esp_task_wdt_delete(NULL)); printf("Unsubscribed from TWDT\n"); // Notify main task of deletion xTaskNotifyGive((TaskHandle_t)arg); vTaskDelete(NULL); }{ ... } void app_main(void) { #if !CONFIG_ESP_TASK_WDT_INIT // If the TWDT was not initialized automatically on startup, manually intialize it now esp_task_wdt_config_t twdt_config = { .timeout_ms = TWDT_TIMEOUT_MS, .idle_core_mask = (1 << CONFIG_FREERTOS_NUMBER_OF_CORES) - 1, // Bitmask of all cores .trigger_panic = false, }{...}; ESP_ERROR_CHECK(esp_task_wdt_init(&twdt_config)); printf("TWDT initialized\n");/* ... */ #endif // CONFIG_ESP_TASK_WDT_INIT // Create a task run_loop = true; xTaskCreatePinnedToCore(task_func, "task", 2048, xTaskGetCurrentTaskHandle(), 10, NULL, 0); // Let the created task run for a while printf("Delay for %d seconds\n", MAIN_DELAY_MS/1000); vTaskDelay(pdMS_TO_TICKS(MAIN_DELAY_MS)); // Stop the created task run_loop = false; ulTaskNotifyTake(pdTRUE, portMAX_DELAY); #if !CONFIG_ESP_TASK_WDT_INIT // If we manually initialized the TWDT, deintialize it now ESP_ERROR_CHECK(esp_task_wdt_deinit()); printf("TWDT deinitialized\n");/* ... */ #endif // CONFIG_ESP_TASK_WDT_INIT printf("Example complete\n"); }{ ... }
Details
Show:
from
Types: Columns: