ESP8266 NodeMCU ESP-12E interrupts dont work properly
Posted: Mon Oct 19, 2020 12:51 pmI'm trying to count pulses from a hall effect switch that goes through an amplifier and schmitt trigger.
The scope signal looks clean but for every pulse on scope I get dozens of count (count is incremented in interrupt handler). I read somewhere that they were susceptible to problems if on esp and input logic were on different power supplies so I broke the 5v on the usb cable so i could still use the serial monitor while having the esp8266 nodemcu and logic powered by same 5v.
Here is the code
Here is a pic of scope
https://youtu.be/sGJrUbsZiQ4
Any help would be appreciated
The scope signal looks clean but for every pulse on scope I get dozens of count (count is incremented in interrupt handler). I read somewhere that they were susceptible to problems if on esp and input logic were on different power supplies so I broke the 5v on the usb cable so i could still use the serial monitor while having the esp8266 nodemcu and logic powered by same 5v.
Here is the code
Code: Select all
volatile 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() {
}Here is a pic of scope
https://youtu.be/sGJrUbsZiQ4
Any help would be appreciated