#define buttonPin1 22
#define buttonPin2 4

#define ledPin1 23
#define ledPin2 2 

SemaphoreHandle_t xSemaLED1;
SemaphoreHandle_t xSemaLED2;

TickType_t btnDebounce1 = 0;
TickType_t btnDebounce2 = 0;

void IRAM_ATTR ISR1() {
  btnDebounce1 = xTaskGetTickCountFromISR();
  xSemaphoreGiveFromISR(xSemaLED1, NULL);
}
void IRAM_ATTR ISR2() {
  btnDebounce2 = xTaskGetTickCountFromISR();
  xSemaphoreGiveFromISR(xSemaLED2, NULL);
}

void setup() { 
  Serial.begin(115200);

  xSemaLED1 = xSemaphoreCreateBinary(); 
  xSemaLED2 = xSemaphoreCreateBinary(); 

  xTaskCreate(flashLED1, "Flash LED1", 1024 * 4, NULL, 1, NULL);
  xTaskCreate(flashLED2, "Flash LED1", 1024 * 4, NULL, 1, NULL);

  pinMode(buttonPin1, INPUT_PULLUP);
  attachInterrupt(buttonPin1, ISR1, FALLING);
  pinMode(buttonPin2, INPUT_PULLUP);
  attachInterrupt(buttonPin2, ISR2, FALLING);
}

void flashLED1(void *pvParam) {
  pinMode(ledPin1, OUTPUT);
  while (1) {
    xSemaphoreTake( xSemaLED1, portMAX_DELAY);
    if ((xTaskGetTickCount() - btnDebounce1) < 100) {
      digitalWrite(ledPin1, !digitalRead(ledPin1));
      vTaskDelay(1000);
    }
  }
}

void flashLED2(void *pvParam) {
  pinMode(ledPin2, OUTPUT);
  while (1) {
    xSemaphoreTake( xSemaLED2, portMAX_DELAY);
    if ((xTaskGetTickCount() - btnDebounce2) < 100) {
      digitalWrite(ledPin2, !digitalRead(ledPin2));
      vTaskDelay(1000);
    }
  }
}


void loop() {}