Using LEDC for generating two pulses

mehdi.na94rm
Posts: 10
Joined: Mon Jun 17, 2019 4:04 pm

Re: Using LEDC for generating two pulses

Postby mehdi.na94rm » Wed Jul 03, 2019 3:58 pm

Nevercast,

Thanks for your comments. I did so and used almost the same method to generate the pulses. By the way, I am using these six pulses to turn on 6 switches in different periods to measure 3 sensors differently with the same hardware and also discharge the output during three different switches.

Regards,
Mehdi

MomoTEch
Posts: 2
Joined: Wed Dec 27, 2023 8:31 pm

Re: Using LEDC for generating two pulses

Postby MomoTEch » Wed Dec 27, 2023 8:33 pm

Hi, i need to generate two different PWM signals on two different pins on the ESP32

However im not getting it, i have tried different codes but i guess my problem is when im configurating the channels, i read they need to have different channel numbers but still the multimeter is not showing different PWM freq


#include <driver/ledc.h>
//the number of the LED pin
const int ledPin = 15; // 16 corresponds to GPIO16
const int ledPin2 = 18; // 17 corresponds to GPIO17
//const int ledPin2 = 18; // 18 corresponds to GPIO18

// setting PWM properties
const int freq = 1000;
const int freq2 = 5000;

const int ledChannel = 0;
const int ledChannel2 = 5;


const int resolution = 10;

void setup(){
// configure LED PWM functionalitites
ledcSetup(ledChannel2, freq2, resolution);
ledcSetup(ledChannel, freq, resolution);

// attach the channel to the GPIO to be controlled
ledcAttachPin(ledPin, ledChannel);
ledcAttachPin(ledPin2, ledChannel2);
//ledcAttachPin(ledPin2, ledChannel2);

}

void loop(){

const int dutyCycle = 1024;
ledcWrite(ledChannel, dutyCycle);


const int dutyCycle2 = 1024;
ledcWrite(ledChannel2, dutyCycle2);



}

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