const uint8_t BUTTON_PIN = 4;
const uint8_t LED_PIN = 2;

TaskHandle_t taskControlHandle;

void taskButton(void *pvParams) {
    while (1) {
        if (digitalRead(BUTTON_PIN) == LOW) {
            xTaskNotify(taskControlHandle, 0x01, eSetValueWithOverwrite);
            vTaskDelay(pdMS_TO_TICKS(200));  // Debounce
        }
        vTaskDelay(pdMS_TO_TICKS(10));
    }
}

void taskControl(void *pvParams) {

    uint32_t receivedValue;

    while (1) {

        if (xTaskNotifyWait(0, ULONG_MAX, &receivedValue, portMAX_DELAY) == pdTRUE) {
            if (receivedValue == 0x01) {
                digitalWrite(LED_PIN, !digitalRead(LED_PIN));
                Serial.println("LED alternado!");
            }
        }
    }
}

void setup() {

    Serial.begin(115200);     

    pinMode(BUTTON_PIN, INPUT_PULLUP);
    pinMode(LED_PIN, OUTPUT);

    xTaskCreate(taskControl, "Control", 2048, NULL, 1, &taskControlHandle);
    xTaskCreate(taskButton, "Button", 2048, NULL, 1, NULL);

}

void loop() {}