FreqCountESP

A frequency counter library for esp32

About
Installation
Usage
Credits
License

" class="reference-link">About

A frequency counter library for esp32. It counts the numbers of pulses on a specified pin during a fixed time frame using native interrupts and timers. It only supports one instance per sketch for now.

" class="reference-link">Installation

To use this library you have to import it into Arduino IDE as follows:

Download or clone this repository as a zip file.
Go to “Sketch” > “Include Library” > “Add .ZIP library…” and select the zip file to import it.

" class="reference-link">Usage

Include the library in the sketch

#include "FreqCountESP.h"

Initialize the instance

Set which pin to use and the length of the time frame in milliseconds.

void setup()
{
  int inputPin = 14;
  int timerMs = 1000;
  FreqCountESP.begin(inputPin, timerMs);
}

Read the frequency

Wait for a new value to become available and read it by calling the read() method.

void loop()
{
  if (FreqCountESP.available())
  {
    uint32_t frequency = FreqCountESP.read();
    // Do something with the frequency...
  }
}

" class="reference-link">Credits

Big thanks to @dpwe for his contributions https://github.com/kapraran/FreqCountESP/pull/5
FreqCount library for Arduino & Teensy boards
Frequency Icon

" class="reference-link">License

MIT License