Question

I'm trying to recreate an experiment from class but I'm missing some code. I need an arduino uno program that will ask the user to enter a duty cycle and frequency, and to then generate a square pulse width (0-5V) based on those values.

Answer 1

#define duty cycle
#define frequency

  
unsigned long duration = 0;
int rpmFactor = 100;
int convertedDuration;
unsigned long readTimeout = 10000;
int state=0;

void setup(){
pinMode(OUT_PIN, OUTPUT);
pinMode(IN_PIN, INPUT);
Serial.begin(9600);
}

void loop()
{
duration = pulseIn(IN_PIN, HIGH);
digitalWrite(OUT_PIN, !digitalRead(OUT_PIN));
delayMicroseconds(duration);
Serial.println(duration);
}


Interrupt

Code: [Select]

int pin = 0 to 5 v
volatile int state = LOW;

void setup()
{
pinMode(pin, OUTPUT);
attachInterrupt(0, blink, CHANGE);
Serial.begin(9600);
int state = 0;
}

void loop()
{
digitalWrite(pin, state);   
}

void blink()
{
state = !state;