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Interrupt errors #11874

MeisterQ started this conversation in General
Sep 25, 2025 · 0 comments
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Hello, im using Interrupts on esp32 and i always get the errors:

16:50:46.072 -> E (1714) gpio: gpio_pullup_en(78): GPIO number error (input-only E (1762) gpio: gpio_isr_handler_remove(568): GPIO isr service is not installed, call gpio_install_isr_service() first
16:50:46.118 -> E (1763) gpio: gpio_isr_handler_remove(568): GPIO isr service is not installed, call gpio_install_isr_service() first

This is my function where i call it

void fan()
{
 unsigned long currentMillis2 = millis();
 if (currentMillis2 - previousMillis2 >= interval2)
 {
 detachInterrupt(digitalPinToInterrupt(FAN1RPM));
 detachInterrupt(digitalPinToInterrupt(FAN2RPM));
 rpm1 = half_revolutions1 * 30;
 rpm2 = half_revolutions2 * 30;
 //Serial.print("Fan1: ");
 //Serial.println(rpm1);
 //Serial.print("Fan2: ");
 //Serial.println(rpm2);
 half_revolutions1 = 0;
 half_revolutions2 = 0;
 previousMillis2 = currentMillis2;
 attachInterrupt(digitalPinToInterrupt(FAN1RPM), rpm_fan1, RISING);
 attachInterrupt(digitalPinToInterrupt(FAN2RPM), rpm_fan2, RISING);
 }
}

Is there anything i can do to fix this?

Im using GPIO 34 ands 35 for interrupt with an external pullup resistor connected. The module is a esp-wroom-32.

If i comment all interrupt lines, the error is gone.

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