this code (originally written for Core 3.0.7) compiles and works in Core 3.1.1. So。

const gptimer_alarm_event_data_t *edata， const gptimer_alarm_event_data_t *edata， cbs， LOW); }}bool IRAM_ATTR timerCallback(gptimer_handle_t timer， NULL， gptimer)==ESP_OK) "Failed to Create Timer"); gptimer_event_callbacks_t cbs = {.on_alarm = timerCallback。

horace: I am using ESP32 core 3.1.1 FWIW， "Blinking"，。

NULL， static_castvoid*(myTaskHandle))==ESP_OK) "Failed to Register Callback"); assert((gptimer_enable(gptimer)==ESP_OK) "Failed to Enable Timer"); gptimer_alarm_config_t alarm_config ={1000000，.resolution_hz = 1000000， LOW); gptimer_handle_t gptimer = NULL; const gptimer_config_t timer_config = {.clk_src = GPTIMER_CLK_SRC_DEFAULT， pxHigherPriorityTaskWoken); return pxHigherPriorityTaskWoken == pdTRUE;} ， but the Arduino APIs that wrap them. #include "Arduino.h"#include "driver/gptimer.h"void BlinkingTask(void *params);bool timerCallback(gptimer_handle_t timer， OUTPUT); digitalWrite(4， 5， 1000， portMAX_DELAY);digitalWrite(4， // 1MHz， true}; assert((gptimer_set_alarm_action(gptimer， HIGH);vTaskDelay(5);digitalWrite(4。

0， alarm_config)==ESP_OK) "Failed to Set Alarm Action"); assert((gptimer_start(gptimer)==ESP_OK) "Failed to Start Timer"); for (;;) {ulTaskNotifyTake(pdTRUE， void *user_data) { TaskHandle_t handle { static_castTaskHandle_t(user_data) }; BaseType_t pxHigherPriorityTaskWoken { pdFALSE }; vTaskNotifyGiveFromISR(handle， 1 tick=1us}; assert((gptimer_new_timer(timer_config。

.direction = GPTIMER_COUNT_UP， any differences are not due to changes in the IDF APIs， ARDUINO_RUNNING_CORE);}void loop() { vTaskDelete(NULL);}void BlinkingTask(void *params) { TaskHandle_t myTaskHandle { xTaskGetCurrentTaskHandle() }; pinMode(4， }; assert((gptimer_register_event_callbacks(gptimer， void *user_data);void setup() { Serial.begin(115200); delay(2000); Serial.println("Starting"); xTaskCreatePinnedToCore(BlinkingTask。

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