Arduino düşük frekans elde etme

bbs2006 · 13 Kasım 2023, 14:13:43

Merhaba
Arduinonun pwm uclarından daha düşük frekans elde edebilirmiyiz. Bunun için nasıl ayarlamalar yapmalıyız.

power20 · 13 Kasım 2023, 14:16:06


double frequency_Hz = 20.0; // adjust this to what your board needs
uint32_t wavelength_us = 1000000.0 /  frequency_Hz;
 
double dutycycle_pct = 35;
uint32_t ontime_us = (double) wavelength_us * dutycycle_pct / 100.0; 
 
uint32_t cycleStart_us;
 
void setup() {
   cycleStart_us = micros();
   pinMode(pin, OUTPUT);
   digitalWrite(pin, HIGH);
}
 
void loop() {
  uint32_t us = micros() - cycleStart_us;
  while(us >=  wavelength_us) {
    // this method of adjusting the cyclestart gives more accurate cycles
    cycleStart_us += wavelength_us;
    us -= wavelength_us;  
  }
 
  digitalWrite(pin, us < ontime_us ? HIGH : LOW);
}

mehmet · 13 Kasım 2023, 21:04:27

https://electronoobs.com/eng_arduino_tut140.php

Picproje Elektronik Sitesi

Haberler:

Arduino düşük frekans elde etme

bbs2006

power20

mehmet

	double frequency_Hz = 20.0; // adjust this to what your board needs
	uint32_t wavelength_us = 1000000.0 / frequency_Hz;

	double dutycycle_pct = 35;
	uint32_t ontime_us = (double) wavelength_us * dutycycle_pct / 100.0;

	uint32_t cycleStart_us;

	void setup() {
	cycleStart_us = micros();
	pinMode(pin, OUTPUT);
	digitalWrite(pin, HIGH);
	}

	void loop() {
	uint32_t us = micros() - cycleStart_us;
	while(us >= wavelength_us) {
	// this method of adjusting the cyclestart gives more accurate cycles
	cycleStart_us += wavelength_us;
	us -= wavelength_us;
	}

	digitalWrite(pin, us < ontime_us ? HIGH : LOW);
	}