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esp_event: Fix flakey esp_event example test

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The execution order of the "task_event_source" and "application_task" tasks
on startup can vary. This will result a different order of logs, thus leading
to the example test failing.

This commit synchronizes both tasks on startup.
This commit is contained in:
Darian Leung 2022-08-11 15:56:49 +08:00
parent 287ab7566b
commit 85c009eb67
1 changed files with 18 additions and 5 deletions
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23
examples/system/esp_event/user_event_loops/main/main.c
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@ -23,6 +23,9 @@ esp_event_loop_handle_t loop_without_task;
static void application_task(void* args)
{
// Wait to be started by the main task
ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
while(1) {
ESP_LOGI(TAG, "application_task: running application task");
esp_event_loop_run(loop_without_task, 100);
@ -58,6 +61,9 @@ static void task_iteration_handler(void* handler_args, esp_event_base_t base, in
static void task_event_source(void* args)
{
// Wait to be started by the main task
ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
for(int iteration = 1; iteration <= TASK_ITERATIONS_COUNT; iteration++) {
esp_event_loop_handle_t loop_to_post_to;
@ -112,12 +118,19 @@ void app_main(void)
ESP_ERROR_CHECK(esp_event_handler_instance_register_with(loop_with_task, TASK_EVENTS, TASK_ITERATION_EVENT, task_iteration_handler, loop_with_task, NULL));
ESP_ERROR_CHECK(esp_event_handler_instance_register_with(loop_without_task, TASK_EVENTS, TASK_ITERATION_EVENT, task_iteration_handler, loop_without_task, NULL));
// Create the event source task
TaskHandle_t task_event_source_hdl;
ESP_LOGI(TAG, "starting event source");
xTaskCreate(task_event_source, "task_event_source", 3072, NULL, uxTaskPriorityGet(NULL) + 1, &task_event_source_hdl);
// Create the event source task with the same priority as the current task
xTaskCreate(task_event_source, "task_event_source", 3072, NULL, uxTaskPriorityGet(NULL), NULL);
// Create the application task
TaskHandle_t application_task_hdl;
ESP_LOGI(TAG, "starting application task");
// Create the application task with the same priority as the current task
xTaskCreate(application_task, "application_task", 3072, NULL, uxTaskPriorityGet(NULL), NULL);
xTaskCreate(application_task, "application_task", 3072, NULL, uxTaskPriorityGet(NULL) + 1, &application_task_hdl);
// Start the event source task first to post an event
xTaskNotifyGive(task_event_source_hdl);
// Start the application task to run the event handlers
xTaskNotifyGive(application_task_hdl);
}