// Forum: https://forum.arduino.cc/t/updating-frequency-at-pwm-pin/1247368
// This Wokwi project: https://wokwi.com/projects/395088728070574081

const int pwmChannel = 1; 
const int pwmPin = 26;

void setup() 
{
   pinMode(pwmPin, OUTPUT);

   // Is the frequency used ?
   // Can the frequency be anything ?
   ledcSetup(pwmChannel, 32, 8);
   ledcAttachPin(pwmPin, pwmChannel);
}

void loop() 
{
  ledcWriteTone(pwmChannel, 5);
  delay(1000);
}