#define Btn1_GPIO 35
#define LED1_GPIO 5
void IRAM_ATTR Ext_INT1_ISR()
{
// Toggle The LED
digitalWrite(LED1_GPIO, !digitalRead(LED1_GPIO));
}
void setup()
{
pinMode(LED1_GPIO, OUTPUT);
pinMode(Btn1_GPIO, INPUT);
attachInterrupt(Btn1_GPIO, Ext_INT1_ISR, RISING);
}
void loop()
{
// Do Nothing...
}