ESP8266 Community Forum

- Mon Oct 19, 2020 7:07 pm #89147 Re-posting as I never saw

Trying to use interrupts on ESP8266 NodeMCU ESP-12E
Here is waveform https://www.youtube.com/watch?v=sGJrUbsZiQ4
and here is code

Code: Select allvolatile uint32_t pulseCount = 0;

#if defined(ARDUINO_ARCH_ESP8266) || defined(ARDUINO_ARCH_ESP32)
#define IRQ_HANDLER_ATTR ICACHE_RAM_ATTR
#else
#define IRQ_HANDLER_ATTR
#endif

void IRQ_HANDLER_ATTR onPulse()
{
   pulseCount++;
  Serial.println(pulseCount);
}

void setup() {
#define DIGITAL_INPUT_SENSOR D2
   // initialize our digital pins internal pullup resistor so one pulse switches from high to low (less distortion)
    pinMode(DIGITAL_INPUT_SENSOR, INPUT);

    attachInterrupt(digitalPinToInterrupt(DIGITAL_INPUT_SENSOR), onPulse, RISING);

  Serial.begin(9600);
   pulseCount = 0;
}



void loop() {
}

I should be getting a positive pulse around 1/sec but the interrupt counter is going up 10 or more a sec.
I have the hall effect/amp/schmitt trigger circuit and nodemcu on the same 5v supply.
Any ideas why this isn't working ?